Metallic materials - Wire Part 1: Simple torsion test
1 Scope
This document specifies a method for determining the ability of metallic wire of diameter or characteristic dimension from 0.1 mm to 14 mm to undergo plastic deformation during simple torsion in one direction.
The unidirectional torsion test for metal wire products of other specifications may be performed with reference to this document after consultation between the parties concerned.
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 the simple torsion test of round wire and shaped wire are shown in Figure 1 and Figure 2, respectively, and listed in Table 1.
Key:
1——Grip;
2——Sample.
Figure 1 Round wire
a) Z b) H
c) T
Figure 2 Typical shaped wire section
Table 1 Symbols and designations
5 Test principle
The test consists of twisting a test piece of wire around its own axis in one direction, so that the specimen is twisted to a specified number of times or the specimen breaks.
Foreword I
Introduction III
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and designations
5 Test principle
6 Testing equipment
7 Test piece
8 Test conditions
9 Test procedures
10 Test report
Annex A (Informative) Recommended types of jaws
Annex B (Informative) Evaluation of fractures occurring during simple torsion test
Metallic materials - Wire Part 1: Simple torsion test
1 Scope
This document specifies a method for determining the ability of metallic wire of diameter or characteristic dimension from 0.1 mm to 14 mm to undergo plastic deformation during simple torsion in one direction.
The unidirectional torsion test for metal wire products of other specifications may be performed with reference to this document after consultation between the parties concerned.
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 the simple torsion test of round wire and shaped wire are shown in Figure 1 and Figure 2, respectively, and listed in Table 1.
Key:
1——Grip;
2——Sample.
Figure 1 Round wire
a) Z b) H
c) T
Figure 2 Typical shaped wire section
Table 1 Symbols and designations
5 Test principle
The test consists of twisting a test piece of wire around its own axis in one direction, so that the specimen is twisted to a specified number of times or the specimen breaks.
Contents of GB/T 239.1-2023
Foreword I
Introduction III
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and designations
5 Test principle
6 Testing equipment
7 Test piece
8 Test conditions
9 Test procedures
10 Test report
Annex A (Informative) Recommended types of jaws
Annex B (Informative) Evaluation of fractures occurring during simple torsion test
