ASTM D2990 — Creep and creep-rupture testing of plastics (tension, compression, and flexure)

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ASTM D2990 is the set of test methods for how plastics deform over time under a constant load, covering tensile, compressive, and flexural creep. To match this to your program, talk with our team.

What ASTM D2990 Covers

It measures the slow, time-dependent deformation of plastics under sustained load, essential for parts that must hold shape under long-term stress.

How the Test Is Run

A specimen is held under constant load in tension, compression, or flexure, often at controlled temperature, and its deformation is recorded over time to give creep and creep-rupture behaviour.

Why It Matters

Creep governs long-term dimensional stability of plastic parts; stable long-duration loading and accurate deformation measurement are required.

Reading the Designation

Cited as ASTM D2990 with its edition year. Confirm the edition and specimen requirements before finalizing setup. To configure a plastics testing setup, request a quote.

Related Standards

ISO 899-1 covers tensile creep and ISO 899-2 covers flexural creep.

Request a Quote

Setting up creep testing of plastics to ASTM D2990? Request a quote and our team will help you build a system matched to your load mode and test duration.


TensileMill CNC products for ASTM D2990

Our specimen-preparation systems and testing equipment compatible with ASTM D2990:


Build your ASTM D2990 workflow with TensileMill CNC

TensileMill CNC helps labs run ASTM D2990 with repeatable, audit-ready results. That typically means universal testing machines, film and dumbbell grips, and specimen preparation for plastics. Send us your specimen types and target standards, and we will help you spec the right system.