ENGINEERING STEELS + ALLOYS
O1 Tool Steel (100MnCrW4) |
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| O1 toolsteel is a medium alloyed cold work steel with good hardening capacity, high wear resistances, dimensionally stable during heat treatment.
Applications: Cutting and punching tools, shear knives, thread rolling tools, measuring instruments.
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| Colour Code | Stocked Sizes | |
Blue/Green |
Rounds |
20 mm - 222 mm Dia |
| Condition of Delivery |
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| Soft annealed to max. 230 HB | ||
| Related Specifications |
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| Germany | DIN 1.2510 |
| USA | AISI O1 |
| Chemical Composition | |||||||||||
| % | |||||||||||
| Carbon | 0.95 | ||||||||||
| Manganese | 1.10 | ||||||||||
| Chromium | 0.60 | ||||||||||
| Tungsten | 0.60 | ||||||||||
| Vanadium | 0.10 | ||||||||||
| Physical Properties | |||||||||||
| Thermal expansion coefficient |  |
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| Thermal conductivity | |||||||||||
| Heat Treatment | |||||||||||
| Soft Annealing | |||||||||||
| Temperature | 740 - 770oC | ||||||||||
| Cooling | furnace | ||||||||||
| Hardness | max 230 HB | ||||||||||
| Stress Relief Annealing | |||||||||||
| Temperature | 600 - 650oC | ||||||||||
| Cooling | furnace | ||||||||||
| Hardening | |||||||||||
| Temperature | 790 - 820oC | ||||||||||
| Cooling | oil or hot bath 180 - 220oC |
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| Hardness | see tempering diagram | ||||||||||
| Thermal Cycle Diagram | |||||||||||
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| Continuous Cooling Transformation Diagram (CCT) | |||||||||||
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| Tempering Diagram | |||||||||||
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