| Equivalent grades |
GB |
DIN |
AISI |
JIS |
BS |
| Cr12Mo1V1 |
1.2379 |
D2 |
SKD11 |
BD2 |
| Chemical Composition |
C |
Si |
Mn |
Cr |
P |
S |
V |
Mo |
Other |
| 1.50-1.60 |
0.10-0.40 |
0.15-0.45 |
11.50-12.50 |
0.03MAX |
0.03MAX |
0.90-1.10 |
0.60-0.80 |
- |
| Available size |
Round Bar |
Diameter |
Length |
| 60-800mm |
2000-6000mm |
| Flat Bar |
Thickness |
Width |
Length |
| 25-400mm |
200-800mm |
2000-6000mm |
| Surface condition |
Black surface/ Grinded/ Machined |
| Annealed hardness |
HB225MAX |
| Characteristics |
Very high resistance against abrasive and adhesive wear due to a high volume of hard carbides in the steel matrix
moderate machinability, good dimensional stability,
toughness and through harden ability |
| Applications |
Shear blades,Thread rolling dies,Drawing and bending tools
Flanging and straightening rolls,Fine cutting tools
Deep drawing tools,Plastic mould for abrasive polymers
Cold extrusion dies,Drawing dies |
| Heat treatment |
Hardening
Harden from a temperature of 1000-1040oC followed by oil, warm bath (500-550oC, cooling bath or air. Hardness after quenching is 62-64 HRC.
Tempering
Tempering temperature: 150-550oC
Tempering Temperature (oC) vs. Hardness (HRC) |
| 100°C |
200°C |
300°C |
400°C |
500°C |
| 63 |
61 |
58 |
58 |
59 |
| Mechanical properties |
Density |
7.7[g/cm3] |
| Thermal Conductivity |
20.20 W/(m/k) |
| Specific heat capacity[J/g.K] |
0.46 |
| Coefficient of Linear Thermal Expansion 10-6 oC-1 |
| 20-100°C |
20-200°C |
20-300°C |
20-400°C |
20-500°C |
| 9.8 |
11.7 |
12.1 |
12.8 |
12.9 |
