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
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
Contents of GB/T 239.2-2023
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
