GB/T 1176-2013Casting copper and copper alloys (English PDF)

Foreword

This standard is developed in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 1176-1987 Specification for Cast Copper Alloys. The following main technical changes have been made, comparing with GB/T 1176-1987. -- the standard name is changed to "Casting Copper and Copper Alloys"; -- the designations of casting copper and copper alloys, i.e., ZCu99, ZCuPb9Sn5, ZCuAl8Mn14Fe3Ni2, ZCuAl8Be1Co1, ZCuZn21Al5Fe2Mn2, ZCuAl10Fe4Ni4, ZCuNi10Fe1Mn1 and ZCuNi30Fe1Mn1 are added; -- the scope is added; -- the spectral analysis method of alloy chemical compositions is added; -- the composition range of ZCuSn10P1, ZCuSn10Zn2, ZCuPb10Sn10, ZCuZn38, ZCuZn25Al6Fe3Mn3, ZCuZn26Al4Fe3Mn3 and ZCuAl8Mn14Fe3Ni2 is modified; -- the expression method of Brinell hardness number in Table 3 is modified; -- Annex A and Annex B are modified; -- Annex C is deleted. This standard was proposed by and shall be under the jurisdiction of the National Technical Committee on Foundry of Standardization Administration of China (SAC/TC 54). The previous editions of this standard are as follows: -- GB/T 1176-1974, GB/T 1176-1987. Casting Copper and Copper Alloys

1 Scope

GB/T 1176-2013 is the Chinese national standard on casting copper and copper alloys, in the field of metallurgy. The /T suffix marks it as a recommended standard: it is not compulsory by itself, but it becomes binding as soon as a contract, a tender or a customer specification calls it up - which in practice is how most foreign buyers meet it. It was issued on 18 September 2013 by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China, and has been in force since 1 June 2014. Classification: ICS 77.120.30, CCS J31. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

This standard specifies the designation, code, technical requirements, test methods and test rules of casting copper and copper alloys. This standard is applicable to the manufacture of copper and copper alloys castings.

2 Normative References

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

GB/T 228.1 Metallic Materials - Tensile Testing - Part

3 Designation and Code of Alloys

3.1 Designation of alloys The designation of casting copper and copper alloys shall meet the requirements of GB/T 8063, and see Table 1 for the designation of alloys.

3.2 Alloy nomenclature According to the requirements of GB/T 8063, the alloy is named based on the mass fraction of its major elements, e.g., 5-5-5 tin bronze, 38 brass and 25-6-3-3 aluminum brass.

5 Test Methods

5.1 Chemical compositions The chemical compositions of alloys are inspected according to those specified in GB/T 5121 (all parts) or YS/T 482.Other test methods are allowable to be adopted only if the analysis precision is guaranteed.

Annex A

(Normative) Figures for Casting Test Block for Mechanical Property Inspection A.1 Sand mold test bars Sand mold test bars applicable to tin bronze, lead bronze and silicon brass are detailed in Figure A.1. In mm