EN ISO 3386-1:2025 PDF

Polymeric materials, cellular flexible - Determination of stress-strain characteristics in compression - Part 1: Low-density materials (ISO 3386-1:2025)

Title (English):

EN ISO 3386-1:2025

Polymeric materials, cellular flexible - Determination of stress-strain characteristics in compression - Part 1: Low-density materials (ISO 3386-1:2025)

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 14
Publication date:: July 23, 2025
Edition:: CEN EN 3386 edition 2 version 1
ICS:: 83.100

Document language:

enru

Delivery time:1–7 days

Price:60 €

Description (English):

This document specifies a method for the determination of the compression stress/strain characteristics of low-density flexible cellular materials up to 250 kg/m3. It also specifies a method for the calculation of the compression stress value of such materials.

Technical details

Technical committee: CEN/TC 249 - Plastics
SKU: EN ISO 3386-1:2025

Abstract

Overview

EN ISO 3386-1:2025 - Polymeric materials, cellular flexible - Determination of stress‑strain characteristics in compression - Part 1: Low‑density materials (ISO 3386-1:2025) specifies a laboratory method to measure the compression stress/strain characteristics of low‑density flexible cellular polymeric materials (density up to 250 kg/m3). The standard defines the test procedure, required apparatus, specimen dimensions and conditioning, and the calculation of the compression stress value (CV40) for 40% compression.

Key topics and technical requirements

Scope: Low‑density flexible cellular materials with density ≤ 250 kg/m3; intended to characterise load‑bearing behaviour in compression.
Compression stress/strain characteristic (CC): Stress vs. strain curve measured at a constant deformation rate during the fourth loading cycle (expressed in kPa and % strain).
Compression stress value (CV40): The compression stress at 40% compression derived from the CC.
Apparatus requirements:
- Test machine with vertical motion rate 100 ± 20 mm/min.
- Force measurement accuracy of ISO 7500‑1 class 1 or ±1 N; thickness measurement under load accurate to ±0.25 mm.
- Supporting surface: smooth, flat, rigid, larger than specimen; may be vented (holes ≈ 6 mm diameter, ~20 mm pitch) to allow air escape.
- Compression plate: plain, smooth (not polished), must overlap specimen and remain parallel to support.
Specimen geometry and preparation:
- Right parallelepiped or right cylinder; minimum width/diameter : thickness ratio 2:1.
- Preferred thickness 50 ± 1 mm, minimum 10 mm; sheets

Related standards

Mentioned in the description and other EN standards

Overview

Key topics and technical requirements

Scope: Low‑density flexible cellular materials with density ≤ 250 kg/m3; intended to characterise load‑bearing behaviour in compression.
Compression stress/strain characteristic (CC): Stress vs. strain curve measured at a constant deformation rate during the fourth loading cycle (expressed in kPa and % strain).
Compression stress value (CV40): The compression stress at 40% compression derived from the CC.
Apparatus requirements:
- Test machine with vertical motion rate 100 ± 20 mm/min.
- Force measurement accuracy of ISO 7500‑1 class 1 or ±1 N; thickness measurement under load accurate to ±0.25 mm.
- Supporting surface: smooth, flat, rigid, larger than specimen; may be vented (holes ≈ 6 mm diameter, ~20 mm pitch) to allow air escape.
- Compression plate: plain, smooth (not polished), must overlap specimen and remain parallel to support.
Specimen geometry and preparation:
- Right parallelepiped or right cylinder; minimum width/diameter : thickness ratio 2:1.
- Preferred thickness 50 ± 1 mm, minimum 10 mm; sheets

EN ISO 3386-1:2025 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Related standards

Abstract

Overview

Key topics and technical requirements

Related standards

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