{"id":7472,"date":"2026-03-04T17:02:43","date_gmt":"2026-03-04T09:02:43","guid":{"rendered":"http:\/\/www.camcjsw-testmachines.com\/?p=7472"},"modified":"2026-03-19T11:00:56","modified_gmt":"2026-03-19T03:00:56","slug":"industry-standard-metals-astm-e139-creep-test","status":"publish","type":"post","link":"http:\/\/www.camcjsw-testmachines.com\/es\/industry-standard-metals-astm-e139-creep-test\/","title":{"rendered":"Industry Standard &#8211; Metals &#8211; ASTM E139 &#8211; Creep Test"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"7472\" class=\"elementor elementor-7472\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-21c4857 e-flex e-con-boxed e-con e-parent\" data-id=\"21c4857\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b99e48d elementor-widget elementor-widget-heading\" data-id=\"b99e48d\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.22.0 - 26-06-2024 *\/\n.elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}<\/style><h4 class=\"elementor-heading-title elementor-size-default\">What is Creep Test?<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b3a44b9 elementor-widget elementor-widget-text-editor\" data-id=\"b3a44b9\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.22.0 - 26-06-2024 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#69727d;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#69727d;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p>Creep test is a material mechanical property test that measures the slow plastic deformation phenomenon of metal materials under long-term constant temperature and constant stress. The higher the temperature or stress, the more significant the creep phenomenon. Creep can occur under a single stress (tension, compression, or torsion) or under composite stress. The usual creep test is conducted under uniaxial tensile conditions. In terms of stress rupture test, a differentiation is made between short term tests up to approximately 10,000 hours and long term tests starting at approximately 10,000 hours.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-57e1a15 e-flex e-con-boxed e-con e-parent\" data-id=\"57e1a15\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-78f7358 elementor-widget elementor-widget-heading\" data-id=\"78f7358\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">What is typical creep curve?<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6d53f77 elementor-widget elementor-widget-text-editor\" data-id=\"6d53f77\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\tA typical creep curve (see creep) can be divided into four parts:\n\n\u2460 Oa is the instantaneous elastic deformation caused by the start of loading. If the stress exceeds the elastic limit of the material at that temperature, Oa is composed of elastic deformation Oa &#8216;and plastic deformation a&#8217;a.\n\n\u2461 ab is the first stage of creep, during which the deformation rate decreases over time.\n\n\u2462 bc is the second stage of creep, also known as the stable creep stage, during which the creep rate is close to a constant.\n\n\u2463 cd is the third stage of creep, also known as the creep acceleration stage. During this stage, the creep rate increases with time and finally fractures at point d.\n\nThe creep curves of different materials are different, and the creep curve of the same material also varies with changes in stress and temperature. The time for creep testing depends on the service life of the parts at high temperatures. For materials such as boilers and steam turbines that operate at high temperatures for a long time, it is sometimes required to provide performance test data for 100000 to 200000 hours.\n\n&nbsp;<img decoding=\"async\" src=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2026\/03\/64a39db6-720f-409b-b6d9-a9db69e1da20.webp\" alt=\"A typical creep curve\" \/>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-897991d e-flex e-con-boxed e-con e-parent\" data-id=\"897991d\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fc21092 elementor-widget elementor-widget-heading\" data-id=\"fc21092\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Discovery of creep<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-58d79bf elementor-widget elementor-widget-text-editor\" data-id=\"58d79bf\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>In 1905, F. Philips of England first observed the phenomenon of metal wire creep. In 1910, the E.N.da C. Andrade experiment in England confirmed that several pure metals had the same creep characteristics. After Dickenson published the creep test results of steel in 1922, it was recognized that metal components bearing at high temperatures would creep, even though the stress they were subjected to was much lower than the yield strength of the component material at that temperature. The study of creep testing has been given more attention since then. After the 1920s, high-temperature and high-pressure technology developed rapidly, and creep testing has become one of the main performance tests that must be conducted on high-temperature metal materials (see high-temperature alloys). In creep testing, the relationship between deformation and time is represented by the creep curve.<\/p><p>The criterion (index) for metal creep resistance is the creep limit, which refers to the stress that causes the specimen to produce a specified creep rate in the second stage of creep at a certain temperature, or the stress that causes the specimen to produce a specified elongation rate at a certain temperature and a specified time interval. The creep limit measured by creep rate and the creep limit measured by elongation are shown in Figure 1, respectively. The symbol I on \u03c3 here represents the test temperature (\u2103), II represents the specified creep rate (%\/hour), III represents the specified elongation rate (%), and IV represents the specified test duration (hours). For example (Figure 2), the creep limit at an allowable elongation of 0.2% after 100 hours of testing at a temperature of 600 \u2103.<\/p><p>According to the general empirical formula, the second stage creep rate is linearly related to the logarithm of stress when the temperature remains constant. Based on this, the creep limit can be calculated using interpolation or extrapolation methods. However, due to surface oxidation or erosion of the sample, as well as changes in internal organizational structure, this linear relationship may no longer exist over a long period of time. Therefore, when obtaining long-term data from short-term creep limit data, it is generally only possible to extrapolate by one order of magnitude over time. When using creep data for temperature and time extrapolation, the Larson Miller parameter method is usually used.<\/p><p>For certain components that are only allowed to undergo a certain amount of deformation during long-term high-temperature operation, such as power plant boilers and steam turbines, creep limit is an important design basis. Most regulations stipulate that a creep rate of 10 to the power of 5 (%\/hour) is equivalent to a deformation of 1% after 100000 hours. The metal materials used to manufacture such components typically require tens of thousands or even longer hours of creep testing.<\/p><p>There are many factors that affect the results of creep tests, among which the most important are the long-term stability of temperature control, deformation measurement accuracy, and specimen processing technology.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c42e5a6 e-flex e-con-boxed e-con e-parent\" data-id=\"c42e5a6\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1efdf3c elementor-widget elementor-widget-heading\" data-id=\"1efdf3c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">ASTM E139-11 Standard Test Methods for Conducting Creep, Creep-Rupture, and Stress-Rupture Tests of Metallic Materials <\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9c833cb elementor-widget elementor-widget-text-editor\" data-id=\"9c833cb\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>These test methods cover the determination of the amount of deformation as a function of time (creep test) and the measurement of the time for fracture to occur when sufficient force is present (rupture test) for materials when under constant tensile forces at constant temperature. It also includes the essential requirements for testing equipment. For information of assistance in determining the desirable number and duration of tests, reference should be made to the product specification<\/p><p>This standard defines the measurement process of creep rate, which is divided into initial strain rate, steady-state creep rate, and three-stage creep, providing a unified technical language for material development and process validation.<\/p><p>The key contents covered by the standard include:<\/p><p>Sample specifications and preparation requirements<\/p><p>Loading and temperature control methods<\/p><p>Stress and strain measurement standards<\/p><p>Principles of Data Collection and Curve Drawing<\/p><p>Definition of endurance time and strength limit<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-13f2fdd e-flex e-con-boxed e-con e-parent\" data-id=\"13f2fdd\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a3f0c0c elementor-widget elementor-widget-heading\" data-id=\"a3f0c0c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Referenced ASTM Standards<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f5843bf elementor-widget elementor-widget-text-editor\" data-id=\"f5843bf\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>E4 Practices for Force Verification of Testing Machines<\/p><p>E6 Terminology Relating to Methods of Mechanical Testing<\/p><p>E8\/E8M Test Methods for Tension Testing of Metallic Materials<\/p><p>E21 Test Methods for Elevated Temperature Tension Tests of\u00a0Metallic Materials<\/p><p>E29 Practice for Using Significant Digits in Test Data to\u00a0Determine Conformance with Specifications<\/p><p>E74 Practices for Calibration and Verification for Force-Measuring Instruments<\/p><p>E83 Practice for Verification and Classification of Extensometer Systems<\/p><p>E177 Practice for Use of the Terms Precision and Bias in\u00a0ASTM Test Methods<\/p><p>E220 Test Method for Calibration of Thermocouples By\u00a0Comparison Techniques<\/p><p>E292 Test Methods for Conducting Time-for-Rupture Notch\u00a0Tension Tests of Materials<\/p><p>E633 Guide for Use of Thermocouples in Creep and Stress-Rupture Testing to 1800\u00b0F (1000\u00b0C) in Air<\/p><p>E1012 Practice for Verification of Testing Frame and Specimen Alignment Under Tensile and Compressive Axial\u00a0Force Application<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2007a7d e-flex e-con-boxed e-con e-parent\" data-id=\"2007a7d\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ec86bb4 elementor-widget elementor-widget-heading\" data-id=\"ec86bb4\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Related standards for metal creep tests<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0ab5569 elementor-widget elementor-widget-text-editor\" data-id=\"0ab5569\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>ISO 204 Metallic materials \u2013 Uniaxial creep testing in tension<\/p><p>ASTM E139 Standard Test Methods for Conducting Creep, Creep-Rupture, and Stress-Rupture Tests of Metallic Materials<\/p><p>EN 2002-005 Test method for metallic material\u2013 Part 005: Uninterrupted creep and stress-rupture testing<\/p><p>ASTM E328 Standard Test Methods for Stress Relaxation for Materials and Structures<\/p><p>ISO 15630-3 Steel for the reinforcement and prestressing of concrete &#8211; Test methods<\/p><p>ASTM G129 Standard Practice for Slow Strain Rate Testing to Evaluate the Susceptibility of Metallic Materials to Environmentally Assisted Cracking<\/p><p>ASTM F519 Standard Test Method for Mechanical Hydrogen Embrittlement Evaluation of Plating\/Coating Processes and Service Environments<\/p><p>ASTM F1624 Standard Test Method for Measurement of Hydrogen Embrittlement Threshold in Steel by the Incremental Step Loading Technique<\/p><p>ASTM E1457 Standard Test Method for Measurement of Creep Crack Growth Times in Metals<\/p><p>ASTM E2760 Standard Test Method for Creep-Fatigue Crack Growth Testing<\/p><p>ASTM E647 Standard Test Method for Measurement of Fatigue Crack Growth Rates<\/p><p>ASTM E2714 Standard Test Method for Creep-Fatigue Testing<\/p><p>ASTM E606 Standard Test Method for Strain-Controlled Fatigue Testing<\/p><p>ISO 12106 Metallic materials &#8211; Fatigue testing &#8211; Axial-strain-controlled method<\/p><p>Validated Code-of-Practice for Strain-Controlled Thermo-Mechanical Fatigue Testing<\/p><p>ISO 12111 Metallic materials &#8211; Fatigue testing &#8211; Strain-controlled thermomechanical fatigue testing method<\/p><p>ASTM E2368 Standard Practice for Strain Controlled Thermomechanical Fatigue Testing<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2c37ed5 e-flex e-con-boxed e-con e-parent\" data-id=\"2c37ed5\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9f1815a elementor-widget elementor-widget-heading\" data-id=\"9f1815a\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Creep Rupture Test<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-52369ff elementor-widget elementor-widget-text-editor\" data-id=\"52369ff\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>The criterion for creep fracture resistance is the ultimate strength limit, which refers to the maximum stress that does not cause fracture at a certain temperature and within a specified time. For some components that do not consider deformation and only consider service life during high-temperature operation, the ultimate strength limit is an important design basis.<\/p><p>The endurance strength test is similar to the creep test, but only determines the fracture time of the specimen during the test process. The morphology of the fracture surface of the sample varies depending on the test conditions, and it mostly fractures along the grain boundary under high temperature and low stress. According to the general empirical formula, when the temperature remains constant, the logarithm of the fracture time and stress is linearly related. Based on this, the endurance strength limit can be calculated using interpolation or extrapolation methods. To ensure the reliability of extrapolation results, the extrapolation time should generally not exceed 10 times the test time.<\/p><p>The elongation and cross-sectional shrinkage after fracture are used to characterize the persistent plasticity of metals. If the persistent plasticity is too low, the material will undergo brittle fracture during use. The persistent strength notch sensitivity qg is expressed as the ratio of the persistent strength limits of notched specimens and smooth specimens under the same fracture conditions. When the sensitivity of the gap is too high, metal materials often break prematurely during use. Both persistent plasticity and persistent strength notch sensitivity are important performance criteria for high-temperature metal materials.<\/p><p>The endurance strength test is usually conducted at a constant temperature and load. In recent years, some laboratories in various countries have developed temperature and load endurance strength testing methods, which have opened up new avenues for testing the endurance strength performance of components under conditions close to use.<\/p><p>\u00a0<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-0daa5e7 e-flex e-con-boxed e-con e-parent\" data-id=\"0daa5e7\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ad34fbd elementor-widget elementor-widget-heading\" data-id=\"ad34fbd\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Stress Relaxation Test<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-efefe09 elementor-widget elementor-widget-text-editor\" data-id=\"efefe09\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Under the condition of constant total deformation of metal components, the process of continuously reducing stress due to the transition from elastic deformation to plastic deformation is called stress relaxation. This phenomenon often occurs in springs, bolts, and other pressure fittings, especially at high temperatures. Therefore, stress relaxation tests are usually conducted at high temperatures. The duration of the first stage of the curve is relatively short, and the stress decreases sharply with time. The second stage lasts longer and tends to be constant. Usually, the residual stress after a specified time is used as the criterion for metal stress relaxation resistance.<\/p><p>The stress relaxation test can be used to determine the initial stress required for bolted joints to maintain sufficient fastening force during long-term use at high temperatures, predict the reduction of sealing gasket sealing, spring elasticity, stability of steel bars in prestressed concrete, and determine the heat treatment conditions required for forgings, castings, and welded parts to eliminate residual stress. For metal materials used as fasteners, stress relaxation tests are often conducted at different temperatures and initial stresses to gain a comprehensive understanding of their performance. The experimental conditions have a significant impact on the stress relaxation test results. The key to ensuring good reproducibility of experimental results is to control the constancy of the total variable and the stability of temperature.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5d56d21 e-flex e-con-boxed e-con e-parent\" data-id=\"5d56d21\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-efbca1b elementor-widget elementor-widget-heading\" data-id=\"efbca1b\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Environment:<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-441d422 elementor-widget elementor-widget-text-editor\" data-id=\"441d422\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>The device and method for heating the sample should provide necessary temperature control to meet the requirements specified below, and do not require more frequent manual adjustments than once every 24 hours after applying the load.<\/p><p>Up to 1800 \u2109\u00a0(1000 \u2103) and below: \u00b1 3 \u2109\u00a0(2 \u2103)<\/p><p>Above 1800 \u2109\u00a0(1000 \u2103): \u00b1 5 \u2109\u00a0(3 \u2103)<\/p><p>Unless otherwise agreed in advance, the sample should be heated in air using a resistance furnace or radiation furnace at atmospheric pressure.<\/p><p>When the length of the parallel segment is less than 2 inches (50 mm), at least two thermocouples should be connected to the specimen, one near each end of the parallel segment. For parallel length segments of 2 inches or longer, add a third thermocouple near the center.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c0686c7 e-flex e-con-boxed e-con e-parent\" data-id=\"c0686c7\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ce1e6c3 elementor-widget elementor-widget-heading\" data-id=\"ce1e6c3\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Test procedure:<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8f3a409 elementor-widget elementor-widget-text-editor\" data-id=\"8f3a409\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Sample preparation: Prepare standard size specimens according to ASTM E139 requirements, ensuring that the surface of the specimens is free of mechanical damage and defects.<br \/><img decoding=\"async\" src=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2026\/03\/8cd5407d-c229-49fb-a1b0-a84e9a0f7d54.webp\" alt=\"sample\" \/><\/p><p>Equipment verification: Use SINOTEST\u00a0<strong><u><b><a href=\"https:\/\/www.camcjsw-testmachines.com\/es\/creep-testing-machine\/\">RDL<\/a><\/b><\/u><\/strong>\u00a0series electronic creep testing machine to ensure the accuracy of the loading device and temperature control system.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-05ebe9e e-flex e-con-boxed e-con e-parent\" data-id=\"05ebe9e\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-8d77e25 e-con-full e-flex e-con e-child\" data-id=\"8d77e25\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-bd8af2d elementor-widget elementor-widget-image\" data-id=\"bd8af2d\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.22.0 - 26-06-2024 *\/\n.elementor-widget-image{text-align:center}.elementor-widget-image a{display:inline-block}.elementor-widget-image a img[src$=\".svg\"]{width:48px}.elementor-widget-image img{vertical-align:middle;display:inline-block}<\/style>\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"600\" height=\"450\" src=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2024\/07\/RDL.webp\" class=\"attachment-large size-large wp-image-519\" alt=\"\" srcset=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2024\/07\/RDL.webp 600w, http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2024\/07\/RDL-300x225.webp 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ef6a25b elementor-widget elementor-widget-heading\" data-id=\"ef6a25b\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Sistema de prueba de fluencia mec\u00e1nica serie RDJ<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5eb4fc1 elementor-widget elementor-widget-text-editor\" data-id=\"5eb4fc1\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>\u00a0Sistema de prueba de resistencia a la fluencia mec\u00e1nica RDJ<\/p><p><strong><b>\u25aaCapacidad:<\/b><\/strong><\/p><p>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0RDJ-10:10kN<\/p><p>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0RDJ-30:30kN<\/p><p>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0RDJ-50:50kN<\/p><p>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0RDJ-100:100kN<\/p><p>\u25aaEstructura portante de la cuchilla<\/p><p>\u25aaControl de temperatura PID<\/p><p>\u25aaCalefacci\u00f3n de tres etapas<\/p><p>\u25aaRecuperaci\u00f3n de punto de interrupci\u00f3n, prueba fuera de l\u00ednea<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-84e392e e-con-full e-flex e-con e-child\" data-id=\"84e392e\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1ded54a elementor-widget elementor-widget-image\" data-id=\"1ded54a\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"600\" height=\"450\" src=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2024\/07\/RPL.webp\" class=\"attachment-large size-large wp-image-523\" alt=\"\" srcset=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2024\/07\/RPL.webp 600w, http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2024\/07\/RPL-300x225.webp 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8e50ea2 elementor-widget elementor-widget-heading\" data-id=\"8e50ea2\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Sistema de prueba de fatiga por fluencia de la serie RPL<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-05afaf2 elementor-widget elementor-widget-text-editor\" data-id=\"05afaf2\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Sistema electr\u00f3nico de prueba de fatiga por fluencia de alta temperatura, serie RPL<\/p><p><strong><b>\u25aaCapacidad:<\/b><\/strong><\/p><p>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 RPL-10:10kN<\/p><p>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 RPL-30:30kN<\/p><p>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 RPL-50:50kN<\/p><p>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 RPL-100:100kN<\/p><p>\u25aaServoaccionamiento electromec\u00e1nico<\/p><p>\u25aaControl de temperatura PID<\/p><p>\u25aaCalefacci\u00f3n de tres etapas<\/p><p>\u25aaRecuperaci\u00f3n de punto de interrupci\u00f3n, prueba fuera de l\u00ednea<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-fee6cc3 e-con-full e-flex e-con e-child\" data-id=\"fee6cc3\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d60ce8e elementor-widget elementor-widget-image\" data-id=\"d60ce8e\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"600\" height=\"450\" src=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2024\/07\/RDJ.webp\" class=\"attachment-large size-large wp-image-518\" alt=\"\" srcset=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2024\/07\/RDJ.webp 600w, http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2024\/07\/RDJ-300x225.webp 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a56e251 elementor-widget elementor-widget-heading\" data-id=\"a56e251\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Sistema de prueba de fatiga por fluencia de la serie RDL<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8f546df elementor-widget elementor-widget-text-editor\" data-id=\"8f546df\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Sistema electr\u00f3nico de prueba de durabilidad por fluencia de la serie RDL<\/p><p><strong><b>\u25aaCapacidad:<\/b><\/strong><\/p><p>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 RDL-10:10kN<\/p><p>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 RDL-30:30kN<\/p><p>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 RDL-50:50kN<\/p><p>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 RDL-100:100kN<\/p><p>\u25aaServoaccionamiento electromec\u00e1nico<\/p><p>\u25aaControl de temperatura PID<\/p><p>\u25aaCalefacci\u00f3n de tres etapas<\/p><p>\u25aaRecuperaci\u00f3n de punto de interrupci\u00f3n, prueba fuera de l\u00ednea<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b5d0fab e-flex e-con-boxed e-con e-parent\" data-id=\"b5d0fab\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3e928c5 elementor-widget elementor-widget-text-editor\" data-id=\"3e928c5\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Temperature uniformity detection: Temperature sensors are arranged at multiple points inside the furnace to ensure uniform heating of the sample and temperature fluctuations of less than \u00b1 2 \u2103.<\/p><p>Loading: Load according to the designed stress level and maintain a constant load environment.<\/p><p>Data collection: Real time collection of sample deformation data, intelligent processing to obtain strain time relationship curves.<\/p><p>Curve analysis: Determine the steady-state creep rate region, evaluate the creep stage and fracture time limit.<\/p><p>Report preparation: Based on industry parameters and customer needs, provide a detailed testing report<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ecce1a5 e-flex e-con-boxed e-con e-parent\" data-id=\"ecce1a5\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-679ec46 elementor-widget elementor-widget-heading\" data-id=\"679ec46\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Variability of Measured Properties<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-414319a elementor-widget elementor-widget-text-editor\" data-id=\"414319a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<img decoding=\"async\" class=\"\" src=\"http:\/\/www.camcjsw-testmachines.com\/wp-content\/uploads\/2026\/03\/16ed4159-918a-4cac-b2af-93559510c85e.webp\" alt=\"Variability of Measured Properties\" width=\"641\"  \/>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>What is Creep Test? Creep test is a material mechanical property test that measures the slow plastic deformation phenomenon of metal materials under long-term constant temperature and constant stress. The higher the temperature or stress, the more significant the creep phenomenon. Creep can occur under a single stress (tension, compression, or torsion) or under composite [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[41],"tags":[],"class_list":["post-7472","post","type-post","status-publish","format-standard","hentry","category-application"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.5 (Yoast SEO v22.9) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\r\n<title>Industry Standard - Metals - ASTM E139 - Creep Test - SinoTest Testing Systems<\/title>\r\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\r\n<link rel=\"canonical\" href=\"http:\/\/www.camcjsw-testmachines.com\/es\/industry-standard-metals-astm-e139-creep-test\/\" \/>\r\n<meta property=\"og:locale\" content=\"es_ES\" \/>\r\n<meta property=\"og:type\" content=\"article\" \/>\r\n<meta property=\"og:title\" content=\"Industry Standard - Metals - ASTM E139 - Creep Test\" \/>\r\n<meta property=\"og:description\" content=\"What is Creep Test? Creep test is a material mechanical property test that measures the slow plastic deformation phenomenon of metal materials under long-term constant temperature and constant stress. The higher the temperature or stress, the more significant the creep phenomenon. 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