A-8 Air Hardening Tool Steel


A-8 is an air-hardening tool and die steel. It exhibits good wearing qualities with excellent toughness characteristics. It is well suited for many metals working dies and punches, which operate in the hardness of Rockwell C 55-60.

Analysis:

C CO CR MN MO NI P S SI V W
0.50 - 0.60 4.75 - 5.500.20 - 0.501.15 - 1.65 0.03 Max.0.03 Max.0.75 - 1.10 1.00 - 1.50

Designations:

ASTM A681-US
FED QQ-T-570-US
UNS T30108-US
UNI KU-Italy
AISI A8 Air Hardening Tool Steel-US

Data is typical and should not be construed as actual values for any category.
Applications and technical information require engineers and tool designers to exercise independent judgement.