GB/T 5237.3-2017Wrought aluminium alloy extruded profiles for architecture - Part 3: Electrodeposition coating profiles (English PDF)

Foreword

SAC/TC 243 is in charge of this English translation. In case of any doubt about the contents of the English translation, the Chinese original shall be considered authoritative.

GB/T 5237 Wrought aluminium alloy extruded profiles for architecture consists of the following six parts under the general title:

— Part 1: Mill finish profiles;

— Part 2: Anodized profiles;

— Part 3: Electrodeposition coating profiles;

— Part 4: Powder coating profiles;

— Part 5: Paint coating profiles;

— Part 6: Thermal barrier profiles.

This is the third part of GB/T 5237.

This part is drafted in accordance with the rules given in GB/T 1.1-2009.

This part replaces GB/T 5237.3-2008 Wrought aluminium alloy extruded profiles for architecture — Part 3: Electrodeposition coating profiles in whole. In addition to a number of editorial changes, the following technical deviations have been made with respect to GB/T 5237.3-2008:

— deleted the statement in the foreword “In this part, subclause 4.4.4 and the local thickness requirement of combine film in Table 2 are compulsory, other contents are recommended” (see the foreword of the 2008 edition);

— modified the application of this part (see Clause 1; Clause 1 of the 2008 edition);

— deleted the normative reference GB/T 228-2002 (see Clause 2 and subclause 5.2 of the 2008 edition);

— deleted the normative reference GB/T 8013.1 (see Clause 2 and subclause 5.4.6 of the 2008 edition);

— deleted the normative reference GB/T 9761 (see Clause 2 and subclause 5.5 of the 2008 edition);

— deleted the normative reference GB/T 9789 (see Clause 2 of the 2008 edition);

— deleted the normative reference GB/T 14952.3 (see Clause 2 and subclause 5.4.1 of the 2008 edition);

— deleted the normative reference GB/T 20975 (see Clause 2 and subclause 5.1 of the 2008 edition);

— deleted the normative reference JC/T 480 (see Clause 2 and subclause 5.4.9 of the 2008 edition);

— added the normative reference GB/T 8005.3 (see Clause 2 and Clause 3);

— added the normative reference GB/T 12967.6 (see Clause 2, subclause 5.4.2 and subclause 5.5);

— added the normative reference GB/T 14684 (see Clause 2 and subclause 5.4.9);

— added the normative reference JC/T 479 (see Clause 2 and subclause 5.4.9);

— modified the guide language of “terms and definitions” (see Clause 3; Clause 3 of the 2008 edition);

— modified the definition of “exposed surfaces” (see subclause 3.1; subclause 3.1 of the 2008 edition);

— deleted the definition of “local thickness” (see subclause 3.2 of the 2008 edition);

— added the regulations of “paint film type and paint film feature” (see subclause 4.1.2);

— in classification, the contents of each coating thickness of typical applications was modified to remarks of coating thickness of each class, and the film code is also specified (see subclause 4.1.3; subclause 4.1.2 of the 2008 edition);

— in classification, added the combined coating performance type and recommended application environment (see subclause 4.1.4);

— added the content of “quality assurance” (see subclause 4.2);

— in coating thickness, added the film thickness requirement of inner angle, fillister etc. profile surface (see subclause 4.6.1; subclause 4.4.2 of the 2008 edition);

— modified the requirement of the paint film hardness of class S (see subclause 4.6.3; subclause 4.4.3 of the 2008 edition);

— modified the requirement of the boiling water resistance (see subclause 4.6.5; subclause 4.4.5 of the 2008 edition);

— modified the requirement of the abrasion resistance (see subclause 4.6.6; subclause 4.4.6 of the 2008 edition);

— modified the requirement of the solvent resistance (see subclause 4.6.10; subclause 4.4.10 of the 2008 edition);

— modified the requirement of the salt-spray corrosion resistance (see subclause 4.6.13; subclause 4.4.12 of the 2008 edition);

— added the requirement of the resistance to cyclic corrosion/UV light (see subclause 4.6.14);

— in the requirement of accelerated weathering resistance testing result, modified the requirement of the gloss retention (see subclause 4.6.15.1; subclause 4.4.14.1 of the 2008 edition);

— in the requirement of accelerated weathering resistance testing result, “Degree of discoloration ≤ 1” is modified to “colour change ΔE*ab ≤ 3.0” (see subclause 4.6.15.1; subclause 4.4.14.1 of the 2008 edition);

— modified the requirement of the “other” coating properties (see subclause 4.6.16; subclause 4.4.15 of the 2008 edition);

— modified the requirement of the analysis method for chemical composition (see subclause 5.1; subclause 5.1 of the 2008 edition);

— modified the requirement of the mechanical properties test methods (see subclause 5.2; subclause 5.2 of the 2008 edition);

— modified the requirement of boiling water resistance test methods (see subclause 5.4.5; subclause 5.4.5 of the 2008 edition);

— modified the requirement of abrasion resistance test methods (see subclause 5.4.6; subclause 5.4.6 of the 2008 edition);

— in acid resistance test methods, “chemically pure hydrochloric acid” is modified to “analytically pure hydrochloric acid” (see subclause 5.4.7; subclause 5.4.7 of the 2008 edition);

— in mortar resistance test methods, modified the pulverized lime to architectural quicklime specified in JC/T 479, modified the standard sand to construction sand specified in GB/T 14684 (see subclause 5.4.9; subclause 5.4.9 of the 2008 edition);

— modified the requirement of solvent resistance test methods (see subclause 5.4.10; subclause 5.4.10 of the 2008 edition);

— added the requirement of resistance to cyclic corrosion/UV light test methods (see subclause 5.4.14);

— modified the requirement of accelerated weathering resistance test methods (see subclause 5.4.15.1; subclause 5.4.14.1 of the 2008 edition);

— in natural exposure resistance, the note is modified (see subclause 5.4.15.2; subclause 5.4.14.2 of the 2008 edition);

— modified the requirement of appearance test methods (see subclause 5.5; subclause 5.5 of the 2008 edition);

— modified the regulations of inspection and acceptance (see subclause 6.1; subclause 6.1 of the 2008 edition);

— modified the requirement of batch (see subclause 6.2; subclause 6.2 of the 2008 edition);

— modified the regulations of inspection items (see subclause 6.4; subclause 6.3 of the 2008 edition);

— modified the regulations of the sampling (see subclause 6.5; subclause 6.4 of the 2008 edition);

— modified the requirement of the judgment for test result (see subclause 6.6; subclause 6.5 of the 2008 edition);

— modified the regulations of the products marking (see subclause 7.1.1; subclause 7.1 of the 2008 edition);

— modified the regulations of the packaging (see subclause 7.2; subclause 7.3 of the 2008 edition);

— modified the regulations of the transporting and storing (see subclause 7.3; subclause 7.4 of the 2008 edition);

— modified the contents of the quality certificate (see subclause 7.4; subclause 7.5 of the 2008 edition);

— modified the regulations of the order (or contract) content (see Clause 8; Clause 8 of the 2008 edition);

— added the contents of the raw material quality assurance (see Annex A);

— added the contents of the bibliography (see Bibliography).

This part was proposed by China Nonferrous Metals Industry Association.

This part was prepared by SAC/TC 243 State Administration of China for Standardization of Nonferrous Metals.

The previous editions of GB/T 5237.3 are as follows: GB/T 5237.3-2000, GB 5237.3-2004, GB/T 5237.3-2008.

1 Scope

This part of GB/T 5237 specifies the terms, definitions, requirements, testing methods, conformity with standards, marking, packaging, transporting, storing, quality certificate and order (or contract) content of wrought aluminium alloy extruded profiles with electrodeposition coating for architecture.

This part is applicable to wrought aluminium alloy extruded profiles for architecture with the combined coatings of anodic oxide, dye and electrodeposition paint (water-solubility paint or color paint) on the surface (hereafter referred to as the profiles).

Wrought aluminium alloy extruded profiles with the same surface treatment and of the same use for other industries may also refer to this part.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

GB/T 629 Chemical reagent — Sodium hydroxide · GB/T 1740 Determination of resistance to humidity · GB/T 1766 Paint and varnish — Rating schemes of degradation of coats · GB/T 1865-2009 Paints varnishes — Artificial weathering and exposure to artificial radiation — Filtered xenon-arc radiation · GB/T 3199 Wrought aluminium and aluminium alloy products — Packaging, marking, transporting and storing · GB/T 4957 Non-conductive coatings on non-magnetic metal substrates — Measurement of coating thickness — Eddy current method · GB/T 5237.1 Wrought aluminium alloy extruded profiles for architecture — Part 1: Mill finish profiles · GB/T 5237.2 Wrought aluminium alloy extruded profiles for architecture — Part 2: Anodized profiles · GB/T 6461 Metals and other inorganic coatings on metal substrates — Rating of specimens and test pieces after the corrosion tests · GB/T 6462 Metallic and oxide coatings — Measurement of coating thickness — Microscopical method · GB/T 6682 Water for analytical laboratory use — Specification and test methods · GB/T 6739 Determination of film hardness by pencil test · GB/T 8005.3 Aluminium and aluminium alloys — Terms and definitions — Part 3: Surface treatment · GB/T 8013.2 Anodic oxide coatings and organic polymer coatings on aluminium and its alloys — Part 2: Combined anodic oxide coating · GB/T 8014.1 Anodizing of aluminium and its alloys — The measuring method of thickness of anodic oxide coatings — Part 1: The measuring principle · GB/T 9276 Methods of exposure to natural weathering of coating · GB/T 9286 Paints and varnishes — Cross cut test for films · GB/T 9754 Paints and varnishes — Determination of specular gloss of non-metallic paint films at 20°, 60° and 85° · GB/T 10125 Corrosion tests in artificial atmospheres — Salt spray tests · GB/T 11186.2 Methods for measuring the colour of paint films — Part 2: Colour measurement · GB/T 11186.3 Methods for measuring the colour of paint films — Part 3: Calculation of colour differences · GB/T 12967.6 Test methods for anodic oxidation coatings of aluminium and aluminium alloys — Part 6: Determination of color differences and appearance of colored anodic oxide films by viewing method · GB/T 14684 Sand for construction · GB/T 16585 Rubber, vulcanized — Test method of resistance to artificial weathering (Fluorescent UV lamp) · JC/T 479 Architectural quicklime

3 Terms and definitions

For the purposes of this document, the terms and definitions given in GB/T 8005.3 and the following apply.