Title:
ASTM A421/A421M-21, "Standard Specification for Stress-Relieved Steel Wire for Prestressed Concrete."
Author(s):
ASTM Subcommittee A01.05 on Steel Reinforcement
Publication:
Commentary Reference
Volume:
Issue:
Appears on pages(s):
Keywords:
DOI:
10.1520/A0421_A0421M-21
Date:
5/1/2021
Abstract:
This specification covers two types of uncoated stress-relieved round high-carbon steel wire commonly used in prestressed linear concrete construction. These two types are the type BA used for applications in which cold-end deformation is used for anchoring purposes and type WA wire which is used for application in which the ends are anchored by wedges, no cold-end deformation of the wire is involved. Required tensile strength, yield strength, and elongation shall be evaluated using stress-relaxation test. Heat analysis shall be used to determine the percentage of specified elements especially sulfur and phosphorus to meet the required chemical composition.