ALTA 1.2721 is similar as ALTA 1.2767, with its high nickel content, this material offers a very good combination of through hardenability and toughness.
Applications
²High pressure molds
²Cold heading dies
²Cutting tools, knives and other mechanical parts
²Punching tools, forming, bending and embossing tools
Chemical composition
Chemical Composition per %
C
Si
Mn
P
S
Cr
Mo
V
Ni
Cu
Min.
0.45
0.15
0.40
0.90
/
/
3.00
Max.
0.55
0.35
0.60
0.020
0.010
1.20
/
/
3.50
0.25
Basic melting process :
IM/EAF + LF + VD + (ESR)
Hardness :
Max 250 HB (annealed)
Reduction ratio :
5 : 1 minimum or required
Grain size :
≥ 5.0 per ASTM E112
Non-metallic inclusion :
≤ 1.0 (thick), ≤ 1.5 (thin) per ASTM E45 method A (more pure by ESR route)
