ISO 3386-1 — Compression stress/strain characteristics for low-density flexible cellular materials

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ISO 3386-1 is the ISO method used to characterize how low-density flexible cellular polymeric materials behave under compression, giving the compression stress-strain response. To match this to your program, talk with our team.

What ISO 3386-1 Covers

It defines the procedure for the compression stress-strain characteristics of flexible foams, reporting the stress at specified compression levels for cushioning and comfort specification.

How the Test Is Run

A foam specimen is compressed at a controlled rate through defined strain levels, and the corresponding stresses are recorded to describe the material response.

Why It Matters

The compression stress-strain curve defines foam firmness and cushioning; a sensitive low-force frame and accurate strain measurement are essential.

Reading the Designation

Cited as ISO 3386-1 with its edition year. Confirm the edition and specimen requirements before finalizing fixtures. To configure a compression setup, request a quote.

Related Standards

ISO 3386 is the companion method and ISO 3384-1 covers rubber compression stress relaxation.

Request a Quote

Setting up compression testing of flexible foam to ISO 3386-1? Request a quote and our team will help you build a system matched to your foam density and load range.


TensileMill CNC products for ISO 3386-1

Our specimen-preparation systems and testing equipment compatible with ISO 3386-1:


Get ready for ISO 3386-1 with TensileMill CNC

TensileMill CNC designs and builds the systems labs use for standards-based mechanical testing. Our range includes universal testing machines with compression platens and anti-buckling fixtures. Request a quote and our team will help you configure a system for ISO 3386-1.