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 / 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 |