Standard No.:	GB/T 239.2-2012
Chinese Name:	金属材料 线材 第2部分：双向扭转试验方法
English Name:	Metallic materials - Wire - Part 2: Reverse torsion test
Professional Classification:	H23 Metal processing property test method
Issued by:
Issued on:	2012-05-11
Implemented on:	2013-02-01
Status:	VALID
Language:	English
File Format:	PDF
Word Count:
Price(USD):	please email coc@codeofchina.com for quotation
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1 Scope

This part specifies a method for determining the ability of metallic wire of diameter 0.1mm to 14mm inclusive to undergo plastic deformation during reverse torsion in one direction. This test method is used for detecting surface and internal defects in wires.

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 239.1 Metallic Materials — Wire — Part 1: Simple Torsion Test (GB/T 239.1-2012, ISO 7800:2003, MOD)

3 Symbols and Designations

The symbols and designations used in the simple torsion test of wires are shown in Figure 1 and listed in Table 1.