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1) cold-working die steel with good hardness
2) good comprehensive mechanics performance
3) low-alloy tool steel
Standard
Chemical
composition
C
Si
Mn
V
P
S
GB/T
1299-2000
%
0.85/
0.95
≤0.40
1.70/
2.00
0.10/
0.25
≤
0.030
≤
0.030
Features :
1) good hardenability and small deformation after quenching
2) refining the crystal grain by adding appropriate niobium and reducing superheated susceptivity
3) small carbide comparatively and its well distribution
Applications :
For making all sorts of gauge, sample board, stamping die, trimming die, steel plate, circularsaw, piercing die
annealing | ≤500°C , air cooling ≤229HB |
hot treatment quench | 780-820°C oil cooling ≥62HRC |
backfire | 150-200°C air cooling HRC:60-62 |