ASTM E139 — Creep, Creep-Rupture, and Stress-Rupture Testing of Metallic Materials

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ASTM E139 describes test methods for constant-load creep and stress-rupture testing of metallic materials at constant temperature, characterizing how metals deform over time under sustained load and heat. To match this to your program, talk with our team.

What ASTM E139 Covers

Creep and rupture testing holds a specimen under constant tensile load at elevated temperature and records how it slowly deforms and, ultimately, fails. It characterizes long-term high-temperature behaviour for turbines, boilers, and pressure equipment.

How the Test Is Run

A specimen is loaded to a fixed stress and held at a controlled temperature for extended periods, from hours to thousands of hours. Extension is monitored over time, and rupture life and creep rate are reported.

Preparing Specimens

Threaded or shouldered specimens suited to hot grips and long-duration furnaces are required, with careful alignment to avoid bending over long tests. To scope a creep-testing setup, request a quote.

Reading the Designation

Cited as ASTM E139-YY. Confirm the edition, temperatures, and target durations.

Related Standards

ASTM E21 covers short-term elevated-temperature tensile testing that complements creep data.

Request a Quote

Setting up creep or stress-rupture testing? Request a quote and our team will help you build a system matched to your temperature range and test duration.

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Set up ASTM E139 testing with TensileMill CNC

From specimen preparation to the test itself, TensileMill CNC supports the full ASTM E139 testing chain. Our range includes universal testing machines, flat and round specimen-preparation systems, and matched grips for metals. Let us know your application and our engineers will help you build a compliant ASTM E139 setup.