H-12 Hot Working Tool Steel

H-12 is a Chrome /Moly/ Tungsten Alloy which exhibits good high temperature strength with moderate toughness. Resists wear, shock, and heat checking at high temperatures.  It has excellent cold-working properties and uniform heat-treatment response.

Typical Applications:
For repair and reclamation of AISI H-12 hot work tool steel.  Widely used for Aluminum extrusion work, Extrusion Tooling, Hot Upset Dies, Gripper/Header Dies, Forging Dies, Hot Piercing Punches, Die Holders, Dummy Blocks, Rams, Bulldozer Dies, Rams, Heavy Duty Compression Tools, Hot Forging Tools, Die Casting Dies, Bolt Dies 
UNS Number T20812
 
Specifications: 
UNS # T20812
AISI H-12
ASTM A681
 
Hardness:
Rc 54-57
 
 Typical Chemical Composition
 

C

Cr

Mn 

Mo

P

S

Si

V

W

0.30-0.40

4.75-5.50

0.20-0.50

1.25-1.75

0.030 max

0.030 max

0.80-1.20

0.50 max

1.00-1.70