ALTA 1.3343/M2 steel is a general type of W-Mo high-speed steel with high hardness, hot hardness and high temperature strength. It has good thermoplasticity, excellent strength and toughness. The disadvantage is that the steel is sensitive to overheating and decarburization.
Applications
²Manufacturing of heavy-duty, complex-shaped, expensive tools
²Cold forging dies, forging tools
²Strip cutting machines, head forming dies
Chemical composition
Chemical Composition per %
C
Si
Mn
P
S
Cr
Mo
V
W
Ni
Cu
Min.
0.86
0.20
0.15
3.80
4.70
1.70
5.90
Max.
0.94
0.45
0.40
0.030
0.030
4.50
5.20
2.10
6.70
0.25
0.30
Basic melting process :
IM/EAF + LF + VD + ESR
Hardness :
Max 269 HB (annealed)
Reduction ratio :
5 : 1 minimum or required
Grain size :
≥ 6.0 per ASTM E112
Non-metallic inclusion :
≤ 1.0 (thick), ≤ 1.5 (thin) per ASTM E45 method A (more pure by ESR route)
