| DIN 3247 | M42 | AISI M42 | AFNOR Z85WDCV06-05-04-02 | |||
|---|---|---|---|---|---|---|
| C 1.08 | Cr 4.10 | Mo 9.50 | V 1.20 | W 1.50 | Co 8.00 | |
Virat Special Steels is the biggest Supplier & Stockiest of DIN 1.3247 Steel.
Din 1.3247 is an excessive-carbon, excessive-pace steel founded on molybdenum. Characterized by excessive put on resistance, red hardness and durability. For this reason of its low vanadium content, this grade reveals excellent grind ability.
This grade is most often used for die-sinking cutters, milling cutters and engraving machines together with gravers as good as for device bits in automatic lathes. Also suitable for non-reducing shaping (e.g. Cold extrusion rams and instruments employed in machining substances for the aviation industry equivalent to titanium alloys).
High-carbon, high-speed steel based on molybdenum. Characterized by high wear resistance, red hardness and toughness. As a result of its low vanadium content, this grade exhibits good grindability.
For tools subject to severe mechanical wear (e.g. in case of small cross-section cuts at high cutting speeds). Particularly suitable for die-sinking cutters, milling cutters and engraving machines including gravers as well as for tool bits in automatic lathes. Also suitable for non-cutting shaping (e.g. cold extrusion rams and tools employed in machining materials for the aviation industry such as titanium alloys).
| Soft annealing °C | Cooling | Hardness HB |
|---|---|---|
| 820 - 860 | Furnace | max. 277 |
| Stress-relief annealing °C | Cooling |
|---|---|
| 630 - 650 | Furnace |
| 1st pre-heating °C | 2nd and 3rd | Hardening °C | Quenching | Tempering °C | Hardness after Teperature HRC |
|---|---|---|---|---|---|
| up to approx. 400 in an air-circulating furnace | 850 and 1050 | 1160-1190 | Saltbath, at least 550 °C Oil ,Air | at least twice 550-560 | 66 – 69 |
1 For cold-forming tools with a complex geometry, a hardening temperature at the lower end of the quoted range is recommended. The stated hardening temperatures apply to saltbath hardening only. For vacuum hardening, we suggest a reduction of 10 °C to 30 °C.