ISO 604 — Compressive Properties of Plastics (Compression Test Method)

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ISO 604 is the test method for the compressive properties of plastics under defined conditions. To match this to your program, talk with our team.

What ISO 604 Covers

It determines compressive strength, modulus, and yield of plastics, with specimen and alignment requirements to keep the specimen in pure compression.

How the Test Is Run

A specimen with flat, parallel ends is compressed at a controlled rate between aligned platens, and force and deformation are recorded to obtain the compressive properties.

Why It Matters

Compression properties support design of plastic parts under compressive load; square specimen ends and accurate alignment are essential.

Reading the Designation

Cited as ISO 604 with its edition year. Confirm the edition and specimen requirements before finalizing setup. To configure a plastics testing setup, request a quote.

Related Standards

ASTM D695 is the ASTM plastics compression method and ISO 527-1 covers tension.

Request a Quote

Setting up compression testing of plastics to ISO 604? Request a quote and our team will help you build a system matched to your material type and force range.


TensileMill CNC products for ISO 604

Our specimen-preparation systems and testing equipment compatible with ISO 604:


Set up ISO 604 testing with TensileMill CNC

From specimen preparation to the test itself, TensileMill CNC supports the full ISO 604 testing chain. Depending on your specimens, that can include universal testing machines, film and dumbbell grips, and specimen preparation for plastics. Let us know your application and our engineers will help you build a compliant ISO 604 setup.