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GB/T 20643.3-2025Special environmental condition — Environmental test method — Part 3: Artificial environmental test method and guidance — Polymer material (English PDF)

特殊环境条件环境试验方法第3部分：人工模拟试验方法及导则高分子材料

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

August 1, 2025

Implementation date

February 1, 2026

Scope

GB/T 20643.3-2025 is the English-translated version of 特殊环境条件环境试验方法第3部分：人工模拟试验方法及导则高分子材料.

GB/T 20643.3-2025 is the Chinese standard "Special environmental condition — Environmental test method — Part 3: Artificial environmental test method and guidance — Polymer material".

Its scope clause reads: This document specifies the requirements for plastics, rubber, coatings, etc. under six special environmental conditions. dry heat, dry hot desert, plateau, humid heat, humid hot ocean, and cold.

Artificial simulation test methods and guidelines for polymer materials. This document is applicable to assessing the environmental adaptability of polymer materials used under special environmental conditions. Its clauses include terms and definitions.

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Document preview — GB/T 20643.3-2025

National Standard of the People's Republic of China

ICS: 19.040
Classification: K 04
Replacing: GB/T 20643.3-2006

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
Introduction
1 Scope
2 Normative references
3 Terms and Definitions
4 Operating environment conditions
5 Artificial simulation environment test
5.1 General requirements
5.2 Test Item
Appendix A (Informative) Main Impacts of Environmental Factors on Polymer Materials
References

1 Scope

This document specifies the requirements for plastics, rubber, coatings, etc. under six special environmental conditions. dry heat, dry hot desert, plateau, humid heat, humid hot ocean, and cold.

Artificial simulation test methods and guidelines for polymer materials.

This document is applicable to assessing the environmental adaptability of polymer materials used under special environmental conditions.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to

This document.

GB/T 2423.1 Environmental testing for electric and electronic products Part 2.Test methods Test A. Low temperature

GB/T 2423.2 Environmental testing for electric and electronic products Part 2.Test methods Test B. High temperature

GB/T 2423.3 Environmental testing Part 2.Test methods Test Cab. Steady state damp heat test

GB/T 2423.4 Environmental testing for electric and electronic products - Part 2.Test methods - Test Db. Cyclic damp heat (12h 12h cycle)

GB/T 2423.16 Environmental testing Part 2.Test methods and guidance. Mildew growth

GB/T 2423.17 Environmental testing Part 2.Test methods Test Ka. Salt spray

GB/T 2423.22 Environmental testing Part 2.Test methods Test N. Temperature change

GB/T 2423.27 Environmental testing Part 2.Test methods Test methods and guidance. Temperature/low pressure or temperature/humidity/low

Comprehensive air pressure test

GB/T 2423.37 Environmental testing for electric and electronic products Part 2.Test methods Test L. Dust test

GB/T 2423.65 Environmental testing Part 2.Test methods Test. Salt spray/temperature/humidity/solar radiation combination

GB/T 9286 Paints and varnishes cross-cut test

GB/T 14522 Test method for artificial weathering of plastics, coatings and rubber materials for use in mechanical industrial products - Fluorescent UV lamp

GB/T 16422.2 Plastics laboratory light source exposure test method Part 2.Xenon arc lamp

GB/T 20625-2024 Terminology for special environmental conditions

GB/T 32088 Xenon arc accelerated aging test method for automotive non-metallic parts and materials

3 Terms and Definitions

The terms and definitions defined in GB/T 20625-2024 apply to this document. […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

Cited by

GB/T 20644.2-2025Special environmental condition—Guidance for choosing—Part 2: Polymer materials

Editions of GB/T 20643.3

Edition	Title	Revision	Status
GB/T 20643.3-2025	Special environmental condition - Environmental test method - Part 3: Artificial environmental test method and guidance - Polymer material	current edition	Current
GB/T 20643.3-2006	Special environmental condition -- Environmental test method -- Part 3: Artificial environmental test method and guidance -- Polymer material	previous edition	In force

This page sells the current edition, GB/T 20643.3-2025. Earlier editions are listed for reference only.

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