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GB/T 33220-2016Copper-beryllium alloy forgings and extrusions—General specification (English PDF)

铜铍合金锻件和挤压件通用技术条件

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 13, 2016

Implementation date

July 1, 2017

Scope

GB/T 33220-2016 is the English-translated version of 铜铍合金锻件和挤压件通用技术条件.

GB/T 33220-2016 is the Chinese standard "Copper-beryllium alloy forgings and extrusions -- General specification".

Its scope clause reads: This Standard specifies the requirements, order information, materials and manufacturing, chemical composition, state, grain size, physical properties, mechanical properties, heat treatment, dimensions and allowable deviation, process, final processing, appearance and test method of copper-beryllium alloy forgings and extrusions.

This Standard applies to copper-beryllium alloy forgings and extrusions whose alloy grades are C17000 (Be content of 1.7%) and C17200 (Be content of 1.9%). The alloys, which are not indicated with the grade, in this Standard, are C17200 copper-beryllium alloys.

Its clauses include terms and definitions; general requirements; order information; materials and manufacturing; chemical composition; state; grain size; physical properties; mechanical properties; heat treatment.

It was issued by the General Administration of Quality Supervision, Inspection and Quarantine on DECEMBER 13, 2016 and took effect on JULY 01, 2017.

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Document preview — GB/T 33220-2016

National Standard of the People's Republic of China

ICS: 77.150.30
Classification: J 32

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

Foreword3
1 Scope4
2 Normative references4
3 Terms and definitions5
4 General requirements5
5 Order Information6
6 Materials and manufacturing6
7 Chemical composition7
8 State7
9 Grain size7
10 Physical properties7
11 Mechanical properties7
12 Heat treatment8
13 Special requirements9
14 Dimensions and allowable deviation9
15 Process, final processing and appearance9
16 Test method9

1 Scope

This Standard specifies the requirements, order information, materials and manufacturing, chemical composition, state, grain size, physical properties, mechanical properties, heat treatment, dimensions and allowable deviation, process, final processing, appearance and test method of copper-beryllium alloy forgings and extrusions.

This Standard applies to copper-beryllium alloy forgings and extrusions whose alloy grades are C17000 (Be content of 1.7%) and C17200 (Be content of 1.9%).

The alloys, which are not indicated with the grade, in this Standard, are C17200 copper-beryllium alloys.

2 Normative references

The following documents are indispensable for the application of this document.

For dated references, only the dated version applies to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 6394, Determination of estimating the average grain size of metal

GB/T 8541, Terminology of forging and stamping

ASTM E 8, Test methods for tension testing of metallic materials

ASTM E 18, Test methods for Rockwell hardness of metallic materials

ASTM B 194, Specification for Copper-beryllium Alloy Plate, Sheet, Strip and Rolled Bar

ASTM B 249/B249M, Specification for General Requirements for Wrought Copper and Copper-alloy Rod, Bar, Shapes and Forgings

ASTM B 601, Classification for Temper Designations for Copper and Copper Alloys - Wrought and Cast

ASTM B 846, Terminology for Copper and Copper Alloys requirements are supplements to the relevant provisions of ASTM B 249/B249M.

5 Order Information

5.2 when it is required, the forging drawings or purchase order shall be provided with the following information:

a) tensile test (see Chapter 11);

b) special tests, such as grain size;

c) post processing (see Chapter 15);

d) grain size (see Chapter 9).

5.1 Product order information includes

a) name and version number of this Standard;

b) quantity: number of pieces or quality;

c) alloy number (see Chapter 1);

d) state (see Chapter 8) or heat treatment (see Chapter 12);

e) if necessary, the provided forging drawings shall contain shapes, dimensions and allowances;

f) the extrusion shall be provided with length (or mass) and straightness.

6 Materials and manufacturing

6.1 Materials

6.1.1 The materials which are used for the manufacture of forgings shall be ingots or forgings of C17000 or C17200, of which, the purity and compactness shall be in accordance with the provisions of the products in this Standard.

6.1.2 The quality certificate and test report shall be provided with the smelting furnace number.

6.2 Manufacturing

The hot working and heat treatment processes which are used in the manufacture of the product shall be able to make the products meet the requirements of this Standard. […]

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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

ASTM E 8 · ASTM E 18 · ASTM B 194 · ASTM B 249 · ASTM B 601 · ASTM B 846

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