GB/T 33816-2017Copper strips for circuit breakers (English PDF)

Foreword

This Standard was drafted as per the rules specified in GB/T 1.1-2009.

1 Scope

This Standard specifies the requirements, test methods, inspection rules, marking, package, transportation, storage, quality certificate and order sheet (contract) content of copper strips for circuit breakers.

This Standard is applicable to the copper strips for circuit breakers.

2 Normative References

The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this document.

GB/T 228.1-2010 Metallic Materials - Tensile Testing - Part 1: Method of Test at Room Temperature

GB/T 351 Metallic Materials - Resistivity Measurement Method

GB/T 4340.1 Metallic Materials - Vickers Hardness Test - Part 1: Test Method

GB/T 5121 (all parts) Methods for Chemical Analysis of Copper and Copper Alloys

GB/T 5231 Designation and Chemical Composition of Wrought Copper and Copper Alloys

GB/T 8888 Wrought Heavy Non-Ferrous Metal Products - Packing, Marking, Transporting and Storing

GB/T 26303.3 Measuring Methods for Dimensions and Shapes of Wrought Copper and Copper Alloys - Part 3: Sheets and Strips

YS/T 478 Method for Electrical Conductivity Measurement of Copper and Copper Alloys by Use of Eddy Current

YS/T 482 Method for Analysis of Copper and Copper Alloys - The Atomic Emission Spectrometry

YS/T 668 Sampling Method of Physical and Chemical Testing for Copper and […]

4 Test Methods

5 Inspection Rules

5.5.2 When the shape size, permissible deviation and surface quality of strip are disqualified, then such batch of strip is disqualified.

5.5.3 When there is disqualified specimen in mechanical property and electrical property test results, take double quantity of specimens from such batch of strips (including the originally disqualified roll of strip in the test) to re-test; if the re-test results are qualified totally, then the whole batch of products are qualified. If there is still disqualified product in the re-test results, then such batch (or such roll) of strip is disqualified; then the supplier is allowed to check roll by roll, only the qualified roll can be delivered.

6 Marking, Package, Transportation, Storage, Quality Certificate

The marking, package, transportation, storage and quality certificate of strip shall conform to the provisions of GB/T 8888.

7 Order Sheet (or Contract) Contents

The order sheet (or contract) ordering the materials listed in this Standard shall include the following contents.

a) Product name;

b) Grade;

c) Supply state;

d) Size specification;

e) Hardness (if required);

f) Weight;

g) This Standard number;

h) Others. […]