標準編號:	GB/T 239.2-2023
中文名稱:	金屬材料 線材 第2部分：雙向扭轉試驗方法
英文名稱:	Metallic materials―Wire―Part 2:Reverse torsion test
中標分類:	H23    金屬工藝性能試驗方法
行業分類:	GB    國家標準
ICS分類:	77.040.10 77.040.10    金屬材料力學試驗 77.040.10
發布機構:	國家市場監督管理總局 國家標準化管理委員會
發布日期:	2023-03-17
實施日期:	2023-7-1
標準狀態:	valid
替代舊標準:	GB/T 239.2-2012 金屬材料 線材 第2部分：雙向扭轉試驗方法
翻譯語言:	英文
文件格式:	PDF
中文字符數:	11000 字
翻譯價格(元):	770.0
交付時間:	付款后 1 個工作日

GB/T 239.2-2023 Metallic materials - Wire - Part 2: Reverse torsion test 1 Scope This document specifies a method for determining the ability of metallic wire of diameter dimension from 0.3mm to 10.0mm to undergo plastic deformation during reverse torsion. This document is applicable to detect surface defects, as well as to assess ductility. 2 Normative references There are no normative references in this document. 3 Terms and definitions No terms and definitions are listed in this document. 4 Symbols and designations The symbols and designations used in this document are shown in Figure 1 and specified in Table 1. Key: 1——Grip; 2——Test piece. Figure 1 Round wire Table 1 Symbols and designations

Foreword i Introduction iii 1 Scope 2 Normative references 3 Terms and definitions 4 Symbols and designations 5 Principle 6 Test equipment 7 Test piece 8 Test conditions 9 Test procedure 10 Test report Bibliography