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