D2 | 1.2379
AISI D2 (1.2379 / X153CrMoV12) is a high-carbon, high-chromium cold work tool steel offering excellent wear resistance, high compressive strength, and good hardenability. Its high carbide content provides excellent abrasion resistance and dimensional stability during heat treatment, making it suitable for demanding cutting, stamping, and forming applications.
Available Form
Round Bar
Custom Diameter & Length
Flat Bar
Custom Thickness, Width & Length
Square Bar
Custom Width & Length
Steel Plate
Custom Thickness, Width & Length
Steel Grade Comparison
| W-Nr | EN | AISI | JIS |
| 1.2379 | X153CrMoV12 | D2 | – |
Chemical Composition(wt%)
| C | Si | Mn | Cr | Mo | V | Co |
| 1.40~1.60 | 0.30~0.50 | 0.30~0.50 | 11.0~13.0 | 0.70~1.20 | 0.8 | 0.6 |
Physical Properties
Density：7.70 g/cm³
Modulus of Elasticity: 210 GPa
Thermal Conductivity: 20.0 W/(m.K)
| Temperature | 20-100°C | 2-200°C | 2-300°C | 2-400°C |
| Coefficient of Thermal Expansion (×10-6 /K) | 11.7 | 12.0 | 12.2 | 12.7 |
Heat Treatment Process
Hardening: Heat the steel evenly to 980~1020°C until the whole section reaches temperature. Then cool in air.
Annealing: Heat the steel to 870~900°C, hold it well at temperature, and then let it cool slowly inside the furnace.
Tempering: Heat the steel uniformly, hold it at the selected tempering temperature, and then allow it to cool in still air. Tempering temperature 200~540°C, hardness 61~54HRC
Application Fields
Blanking and Stamping Dies, Punching and cutting tools, thread rolling dies, cold extrusion tools, industrial cutting blades, plastic molding tools, deep drawing dies
Disclaimer: the information and data presented herein are typical values for reference and are not intended as warranties to readers.
