NACHI-FUJIKOSHI CORP.
Special Steels
Main text
HS97R
We have improved the quality stability after vacuum quenching, reduced early chipping of the cutting edge.
HS97R : High-performance High Speed Steel with high chipping resistance, wear resistance, and hardenability
Chemical Composition (%)
| NACHI Grade |
C | Si | Mn | Cr | Mo | W | V | Co |
|---|---|---|---|---|---|---|---|---|
| HS97R | 1.1 | 0.3 | 0.3 | 4.0 | 5.5 | 7.5 | 1.8 | 9.0 |
Heat treatment conditions
| NACHI Grade |
Annealing | Quenching | Tempering | Practical hardness (HRC) |
|||
|---|---|---|---|---|---|---|---|
| Preheating | Austenitizing | Cooling | Temperature | Times | |||
| HS97R | 820°C 880°C |
820°C880°C |
1180°C1230°C |
Gas Oil hot bath |
540°C580°C |
23 |
6569 |
1.Tempering temperature（°C）
2.Quenching temperature and grain size
