A-2 Air Hardening Tool Steel produces weld
deposits that are completely heat-treatable
and have excellent resistance to high
abrasion, medium impact, and wear. The
deposits are also highly crack resistant and
forgeable. Typical applications encountered
are trim steels, piercing punches, flange, and
forming dies as well as some draw form
operations. This alloy is most widely used
for general repair of the air hardening
grades where a complete heat treat cycle
will be used.

Alloy Type
Typical 5% Chromium Air Hardening

Hardness as welded
Rockwell C 58-62

Heat Treatment
A-2 Procedure

Welding Positions

F,V,OH,H

Shielding Gas
Argon (recommended)

Available Diameters
SMAW – 3/32″, 1/8″, 5/32″ & 3/16″
GTAW – .030″, .035″, .045″, 1/16″ & 1/8″