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QC/T 797-2008Material identification and marking of automotive plastic, rubber and thermoplastic elastomer parts (English PDF)

汽车塑料件、橡胶件和热塑性弹性体件的材料标识和标记

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Issued by

MIIT

Level / Type

Industry · Recommended

Issue date

February 1, 2008

Implementation date

July 1, 2008

Scope

QC/T 797-2008 is the English-translated version of 汽车塑料件、橡胶件和热塑性弹性体件的材料标识和标记.

QC/T 797-2008 is the Chinese automotive industry standard, adapted from ISO 11469:2000, for marking vehicle parts with the material they are made of. It covers plastic parts above 100 g, rubber parts above 200 g and thermoplastic elastomer parts; tyres are excluded, and lighter parts may follow it voluntarily.

Materials are identified with the symbols and abbreviations of GB/T 1844, GB/T 5576, GB 5577, ISO 1043-4 and ISO 18064, set between the marks > and <.

Rules cover single polymers, blends and alloys listed by descending mass fraction, fillers and reinforcements, plasticizers, and rubber and elastomer parts, together with the marking method and its position and size. Issued on 1 February 2008, it has applied since 1 July 2008.

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Document preview — QC/T 797-2008

National Standard of the People's Republic of China

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

Foreword5
1 Scope6
2 Normative references6
3 Terms and definitions7
4 Symbols and abbreviated terms7
5 Technical requirements for identification symbols8

Foreword

This Standard revised and adopted ISO 11469:2000 "Plastics - Generic Identification and Marking of Plastic Products±. The main differences between this Standard and ISO 11469:2000 are. directly REFERENCE the corresponding national standards, DELETE the definition associated with computer terminology given in the original standard, REDEFINE the scope of this Standard, ADD requirements for material identification and marking of automotive plastic, rubber and thermoplastic elastomer parts.

1 Scope

This Standard specifies the requirements for material identification and marking of automotive plastic, rubber and thermoplastic elastomer parts.

This Standard applies to material identification and marking of automotive plastic with the mass exceeding 100 g, rubber with the mass exceeding 200 g and thermoplastic elastomer parts, this Standard does not apply to identification and marking of automotive tires. For the product with the mass lower than the value specified in this Standard, this Standard can be referenced.

2 Normative references

The provisions in following documents become the provisions of this Standard through reference in this Standard. For dated references, the subsequent amendments (excluding corrigendum) or revisions do not apply to this Standard, however, parties who reach an agreement based on this Standard are encouraged to study if the latest versions of these documents are applicable. For undated references, the latest edition of the referenced document applies.

GB/T 1844.1 Plastics - Symbols and abbreviated terms - Part 1: Basic polymers and their special characteristics (GB/T 1844.1-1995, ISO 1043-1:1987, NEQ)

GB/T 1844.2 Plastics - Symbols and abbreviated terms - Part 2: Fillers and reinforcing materials (GB/T 1844.2-1995, ISO 1043-2:1987, NEQ)

GB/T 1844.3 Plastics - Symbols and abbreviated terms - Part 3: Plasticizers (GB/T 1844.3-1995, ISO 1043-3:1987, NEQ)

GB/T 2035 Terms and definitions for plastics (GB/T 2035-1996, ISO 472:1988, EQV)

GB/T 5576 Rubbers and lattices - Nomenclature (GB/T 5576-1997, ISO 1629:1995, IDT)

GB 5577 Codification of types for synthetic rubbers

GB/T 15237.1 Terminology word - Vocabulary - Part 1: Theory and application

ISO 1043-4 Plastics - Symbols and abbreviated terms - Part 4: Flame retardants

ISO 18064 Thermoplastic elastomers - Nomenclature and abbreviated terms

3 Terms and definitions

For the purpose of this Standard, the following terms and definitions and those given in GB/T 2035, GB/T 5576, GB 5577 and ISO 18064 apply.

3.1 Abbreviated term

Abbreviation of any terms that share the same definition with the terms in GB/T 15237.1.

3.2 Plastic product

Articles or stock shapes of plastic materials intended for useful purpose.

3.3 Rubber product

Articles or stock shapes of rubber materials intended for useful purpose.

3.4 Thermoplastic elastomer product

Articles or stock shapes of thermoplastic elastomer materials intended for useful purpose.

4 Symbols and abbreviated terms

The symbols and abbreviated terms given in GB/T 1844.1, GB/T 1844.2, GB/T 1844.3

ISO 1043-4, GB/T 5576, GB 5577 and ISO 18064 apply to this Standard. If an appropriate symbol or abbreviated term is not included in any of this part of this Standard, such a symbol or abbreviated term from any available national or international standard shall be used.

5 Technical requirements for identification symbols

5.1 Marking system

5.1.4 Identification of products with special additives.

5.1.5 Identification of rubber and thermoplastic elastomer products.

Identification of automotive rubber and thermoplastic elastomer products shall emphasizes the primary material, and be marked according to the format specified in 5.1.1.

5.1.1 Identification format

It shall use appropriate symbol(s) or abbreviated term(s) to mark materials of plastic products, rubber and thermoplastic elastomer parts. The material identification shall be set between the punctuation marks ">" and "< ±.

5.1.2 Single-constituent product identification

Products made from a single polymer or copolymer shall be marked as specified in 5.1.1.

5.1.3 Polymer blends or alloys product identification

Products made from polymer blends or alloys shall be marked with the appropriate abbreviated terms of constituent polymers, with the main component in first place followed by the other components in descending order according to their mass fractions, separated by one or more plus signs, the marking shall be in accordance with the format in 5.1.1.

5.1.4.1 Filling and reinforcing materials

Products with a single filling or reinforcing material shall be marked with the abbreviated term for the polymer, followed by a hyphen, then the abbreviated term or symbol for the additive, indicating their mass fractions, the marking shall be in accordance with the format in 5.1.1.

5.1.4.2 Plasticizers

Compositions containing plasticizers shall be marked with the abbreviated term for the polymer followed by a hyphen, then the symbol "P" followed by the abbreviated term of the plasticizer in parentheses, as given in GB/T 1844.3.

5.2 Identification methods

The identification of plastic, rubber and thermoplastic elastomer parts shall be made by one of the following methods.

5.3 Position and dimensions of identification

The dimensions and position of identification shall not affect the use of products but fulfill the appearance design requirements for automobile and parts. […]

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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

GB 5577 · ISO 1043-4 · ISO 18064

Cited by

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