High-speed steel
| Steel type | Equivalent JIS steel | Hardening and annealing hardness | Features | Application example |
| KMX1 | 45～55HRC | High-tenacity
matrix high- speed steel |
Warm forging | |
| KMX2 | 57～62HRC | General-purpose
matrix high- speed steel |
Cold-precision forging | |
| KMX3 | 60～65HRC | High-wear-resistance
matrix high-speed steel |
Press dies, roll dies, rolls | |
| H51 | SKH51 | 60～65HRC | General-purpose
matrix high- speed steel |
Drills, end mills, press dies |
| HM35 | SKH55 | 60～66HRC | Heat-resistant,
wear-resistant high-speed steel |
End mills, hobs, press dies |
| HM36 | SKH56 | 60～66HRC | Heat-resistant,
wear-resistant high-speed steel |
End mills, hobs, press dies |
| MV10 | SKH57 | 62～67HRC | Heat-resistant,
wear-resistant high-speed steel |
Bites, end mills, hobs |
| HM42 | SKH59 | 62～67HRC | Heat-resistant,
wear-resistant high-speed steel |
Bites, end mills, hobs |
| S70 | 65～70HRC | Hard wear-resistant high- speed steel |
Drills, end mills, bites |
Recommended!
Recommended KMX3
High performance equivalent to the SKH51 offers superior cost performance. Ideal for metal molds and wear-resistant parts.
Recommended S70
The S70 is a fruit of KOSHUHA’s long know-how and experience in the high-speed steel industry. It offers the ultimate hardness of HRC70 as soluble high-speed steel.
Position of high-speed steel characteristics
