GB — Chinese GB standard cold work tool steel. Equivalent to AISI D2, DIN 1.2379. Lower Mo and V content compared to D2. High carbon high chromium cold work tool steel. Excellent wear resistance, high compressive strength and good dimensional stability during hardening.
Chinese GB standard cold work tool steel. Equivalent to AISI D2, DIN 1.2379. Lower Mo and V content compared to D2. High carbon high chromium cold work tool steel. Excellent wear resistance, high compressive strength and good dimensional stability during hardening.
Applications
Blanking dies, forming dies, thread rolling dies, punches, shear blades, gauges, broaches, drawing dies
Chemical Composition (%)
C
Mn
Si
Cr
Mo
V
S
P
1.45–1.70
≤0.40
≤0.40
11.00–13.00
0.40–0.60
0.15–0.30
≤0.030
≤0.030
Mechanical Properties
Hardness (annealed)
≤255 HB
Hardness (hardened)
57–62 HRC
Compressive Strength
2400 MPa
Typical Available Sizes
Round Bar
16mm–300mm dia
Flat Bar
various
Square Bar
various
Forging
Custom sizes
Sizes are indicative. Contact seller for exact availability.