GB/T 39693.4-2025 Active National standards

GB/T 39693.4-2025 Rubber,vulcanized or thermoplastic—Determination of hardness—Part 4:Indentation hardness by durometer method(Shore hardness)

GB/T 39693.4-2025 Rubber,vulcanized or thermoplastic—Determination of hardness—Part 4:Indentation hardness by durometer method(Shore hardness)

Publish Date: 2025-08-29 Implement Date: 2026-03-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 39693.4-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Rubber products and their auxiliary materials

ICS Name: Rubber

Publish Date: 2025-08-29

Implement Date: 2026-03-01

Pages: 20 pages

Scope

This document describes the method of measuring the compression hardness (Shore hardness) of vulcanized rubber or thermoplastic rubber using the following Shore hardness scales:
—— Scale A is suitable for rubber with a normal hardness range;
—— Scale D is suitable for rubber with a high hardness range;
—— Scale AO is suitable for rubber and sponges with a low hardness range;
—— Scale AM is suitable for thin rubber samples with a normal hardness range.

Development Information

Word Count: 29 Thousand words Pages: 20 pages

Same series standard

GB/T 39693.1-2025 Rubber,vulcanized or thermoplastic—Determination of hardness—Part 1:Introduction and guidance GB/T 39693.2-2025 Rubber,vulcanized or thermoplastic—Determination of hardness—Part 2:Hardness between 10 IRHD and 100 IRHD GB/T 39693.5-2025 Rubber, vulcanized or thermoplastic—Determination of hardness—Part 5:Indentation hardness by IRHD pocket meter method

Replace the following standards

GB/T 531.1-2008 Rubber,vulcanized or thermoplastic—Determination of indentation hardness—Part 1:Duromerer method(Shore hardness)

Referenced Standards

ISO 48-9 ISO 23529

Adopt standards

ISO 48-4:2018

Related Standards

GB/T 1685-1982 Replaced

GB/T 1685-1982 Rubber, vulcanized—Determination of stress relaxation in compression at normal and at elevated temperature

Publish Date: 1982-03-12

GB/T 3515-1983 Replaced

GB/T 3515-1983 Rubber, vulcanized—determination of carbon black content—pyrolytic method

Publish Date: 1983-03-03

GB/T 4497-1984 Replaced

GB/T 4497-1984 Vulcanized rubber—Determination of total sulphur content—Oxygen combustion flask method

Publish Date: 1984-06-17

GB/T 6030-1985 Replaced

GB/T 6030-1985 Vulcanized rubber—Determination of carbon black dispersion—Micrographic method

Publish Date: 1985-05-24

GB 5577-1985 Replaced

GB 5577-1985 Codification of types for synthetic rubbers

Publish Date: 1985-10-26

GB/T 1688-1986 Replaced

GB/T 1688-1986 Rubber, vulcanized—Determination of tension fatigue

Publish Date: 1986-11-24