Enquiry
D2 Tool Steel (X153CrMoV12), 1.2379, XW41, SKD11, D2, XW42
Chrome steel 12%, very high resistance against abrasive and adhesive wear due to a high volume of hard carbides in the steel matrix, good toughness, very good dimensional stability, high compressive strength, very good base material for PVD/CVD coating as well as nitriding due to its secondary hardening properties. Similar to SKD11 / 2379.
Applications: Cutting, punching, stamping tools, shear blades, thread rolling dies, cold extrusion dies, drawing and bending tools, flanging and straightening rolls, fine cutting tools, deep drawing tools, plastic moulds for abrasive polymers.
| Chemical Composition | % |
|---|---|
| Carbon | 1.55 |
| Chromium | 12.00 |
| Molybdenum | 0.80 |
| Vanadiu | 0.90 |
| Relevant D2 Steel Specifications | |||
|---|---|---|---|
| Country | USA | German | Japan |
| Standard | ASTM A681 | DIN EN ISO 4957 | JIS G4404 |
| Grades | D2 | 1.2379/X153CrMo12 | SKD11 |
| 2379 Steel Mechanical Properties | ||
|---|---|---|
| Mechanical Properties | Metric | Imperial |
| Hardness, Knoop (converted from Rockwell C hardness) | 769 | 769 |
| Hardness, Rockwell C | 62 | 62 |
| Hardness, Vickers | 748 | 748 |
| Izod impact unnotched | 77.0 J | 56.8 ft-lb |
| Poisson’s ratio | 0.27 - 0.30 | 0.27 - 0.30 |
| Elastic modulus | 190 - 210 GPa | 27557 - 30457 ksi |
Heat Treatment
| Soft Annealing | ||
|---|---|---|
| Temperature | Cooling | Hardness |
| 820 - 850oC | furnace | max 255 HB |
| Stress Relief Annealing | |
|---|---|
| Temperature | Cooling |
| 600 - 650oC | furnace |
| Hardening | ||
|---|---|---|
| Temperature | Cooling | Tempering |
| 1020 - 1030oC | oil, pressure (N2) air or hot bath 500 - 550oC |
see tempering diagram usually < 300°C |
| 1040 - 1080oC | oil, pressure (N2) air or hot bath 500 - 550oC |
see tempering diagram usually 500°C |
Thermal Cycle Diagram
Continuous Cooling Transformation Diagram (CCT)
Tempering Diagram
