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Hot Work Steel
Hot work tools operate at elevated temperatures and form products in aluminium, steel or other metals. The most common application areas in hot work are die casting, extrusion and forging. Where demands on the tool are high, tool materials for hot work applications must have:
- High resistance to heat checking
- Good strength at high temperatures
- Resistance to cracking and crack propagation
| Grade ASSAB Grade Uddeholm |
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Hardness supplied approx. HB |
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Characteristics | Applications | |||||||||||||||||||||
| ALVAR 14 UDDEHOLM ALVAR 14 |
0.7 | 1.1 | 0.5 | 0.1 | - | Si 0.3, Ni 1.7 | 250 or Pre-hardened | - | 1.2714 | - | A versatile hot work tool steel with high toughness and good resistance to thermal stresses. | Hot forging and hot shearing dies. Support for hot extrusion tooling. | ||||||||||||||
| VIDAR SUPERIOR UDDEHOLM VIDAR SUPERIOR |
0.3 | 5.0 | 1.3 | 0.5 | - | Si 0.3 | 180 | (H11 improved) | (1.2343) | (SKD6) | An improved H11-type hot work steel with higher toughness and thermal fatigue strength. | Suitable for tools for high pressure die casting, hot extrusion and press forging. | ||||||||||||||
| 8407 2M UDDEHOLM ORVAR 2M |
0.4 | 5.3 | 1.3 | 0.9 | - | Si 1.0 | 180 | H13 | 1.2344 | SKD 61 | Hot work tool steel with overall good ductility, toughness, wear resistance, hardenability and machinability. | Tools for extrusion, hot pressing, moulds for plastics. | ||||||||||||||
| 8407 SUPREME UDDEHOLM ORVAR SUPREME |
0.4 | 5.2 | 1.4 | 0.9 | - | Si 1.0, S max 0.03 | 180 | H13 improved | 1.2344 | SKD 61 | A premium H13 tool steel with very good resistance to heat checking. 8407 SUPREME meets and exceeds NADCA 207-2003 specification for Premium Die Casting Materials. | Very suitable for tools for high pressure die casting, hot extrusion and press forging. | ||||||||||||||
| DIEVAR UDDEHOLM DIEVAR |
- | Cr- | Mo- | V | alloyed | Hot | work | steel | - | - | High performance hot work tool steel with very good resistance to heat checking, gross cracking, hot wear and plastic deformation. | Excellent choice for die casting of aluminium and magnesium, forging and aluminium extrusion. | ||||||||||||||
| HOTVAR UDDEHOLM HOTVAR |
0.75 | 2.6 | 2.25 | 0.85 | - | - | ~210 | - | - | - | Very good high temperature properties and high hot wear resistance steel for warm forging and extrusion. | Warm forging, dies and punches; Roll forging and rolling segments; Rock orbital forging, punches and dies; Hot bending, tools; Hot calibration, tools; Zinc die casting, dies. | ||||||||||||||
| QRO 90 SUPREME UDDEHOLM QRO 90 SUPREME |
0.75 | 2.6 | 2.3 | 0.9 | - | Si 0.3 | 180 | - | - | - | Highest temperature strength and very good thermal fatigue resistance. | Die casting dies and associated tooling, extrusion dies and extrusion tooling, forging dies, esp. for copper and brass. | ||||||||||||||