ASTM A581-A581M

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ASTM A581 / A581M

This specification covers cold-finished wire and hotfinished wire rods in coils. Wire rods are a semi-finished product primarily for the manufacture of wire. Wire includes rounds, squares, hexagons, and special shapes in the more commonly used types of stainless free-machining steels designed especially for optimum machinability and for general corrosion and high-temperature service.

astm-a581-type-347-uns-s30300-wire-rods

ASTM A581 / A581M Chemical Requirements

UNS DesignationA Type Carbon, max ManganeseB Phosphorus,max SulfurB Silicon, max Chromium Nickel
S30300 303 0.15 2.00 0.20 0.15 min 1.00 17.0–19.0 8.0–10.0

A New designation established in accordance with Practice E527 and SAE J 1086, Practice for Numbering Metals and Alloys (UNS).
B Maximum unless otherwise noted.

ASTM A581 / A581M Mechanical Properties

Type Condition (see Section 5) Tensile Strength
ksi
[MPa]
303, 303Se, XM-1,
XM-2, XM-3, and XM-5
BA 115 to 145 [795 to 1000]

ACondition B applies only to wire annealed and cold worked to produce high strength in chromium-nickel types not hardenable by heat treatment.

ASTM A581 / A581M Alloy Condition Identification

UNS Designation
Type
Condition A (Annealed)
Condition B (Cold Worked)
S30300 303 A B