ENGINEERING STEELS + ALLOYS
D2 Tool Steel (X153CrMoV12) |
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| D2 toolsteel is a 12% chrome steel, it has 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, and has a very good base material for PVD/CVD coating as well as nitriding due to its secondary hardening properties. Similar to AISI D2. 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. |
| Colour Code | Stocked Sizes | |
Black/Red |
Rounds: Squares:Flats: |
16 mm - 413 mm Dia25 mm - 250 mm AF
55 mm x 14 mm - 400 mm x 100 mm |
| Condition of Delivery |
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| Soft annealed to max. 255 HB | ||
| Related Specifications |
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| Germany | DIN 1.2379 |
| USA | AISI D2 |
| Chemical Composition | |||||||||||
| % | |||||||||||
| Carbon | 1.55 | ||||||||||
| Chromium | 12.00 | ||||||||||
| Molybdenum | 0.80 | ||||||||||
| Vanadium | 0.90 | ||||||||||
| Physical Properties | |||||||||||
| Thermal expansion coefficient |  |
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| Thermal conductivity | |||||||||||
| Heat Treatment | |||||||||||
| Soft Annealing | |||||||||||
| Temperature | 820 - 850oC | ||||||||||
| Cooling | furnace | ||||||||||
| Hardness | max 255 HB | ||||||||||
| Stress Relief Annealing | |||||||||||
| Temperature | 600 - 650oC | ||||||||||
| Cooling | furnace | ||||||||||
| Hardening | |||||||||||
| Temperature | 1020 - 1030oC | 1040 - 1080oC | |||||||||
| Cooling | oil, pressure (N2) air or hot bath 500 - 550oC |
see tempering diagram usually < 300°C |
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| Hardness | oil, pressure (N2) air or hot bath 500 - 550oC |
see tempering diagram usually 500°C |
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| Thermal Cycle Diagram | |||||||||||
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| Continuous Cooling Transformation Diagram (CCT) | |||||||||||
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| Tempering Diagram | |||||||||||
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