NACHI-FUJIKOSHI CORP.
Special Steels
Main text
P/M High speed Tool Steels
- No segregates and uniformly finer carbide, compared to conventional melting high speed steel
- Fine carbide and crystal grain, high toughness
- Stable performance that certain grindability and less deformation after heat treatment
- Excellent Hot Workability and becoming it is possible a high alloy. Superior wear resistance
Steel grade and applications
| NACHI Grade |
Chemical Composition (Wt%) |
JIS AISI Grade |
Main application | |||||
|---|---|---|---|---|---|---|---|---|
| C | Cr | W | Mo | V | Co | |||
| FAX31 | 1.3 | 4.0 | 6.0 | 5.0 | 3.0 | - - | SKH53, M3-2 |
Cutting tool (Pinion cutter, Hob) Mold (Die) |
| FAX38 | 1.3 | 4.0 | 6.0 | 5.0 | 3.0 | 8.0 | Cutting tool (Broach, Hob, Shaving cutter, Drill, Reamer) Mold (Die) |
|
| FAX40 | 1.3 | 4.0 | 9.5 | 3.5 | 3.0 | 9.5 | SKH57 | Cutting tool (Bandsaw) Mold (Die) |
| FAX55 | 1.6 | 4.0 | 12.0 | - - | 5.0 | 5.0 | SKH10, T15 |
Cutting tool (Broach, Pinion cutter, Gauge) Mold (Die) |
| FAXG1 | - - | - - | - - | - - | - - | - - | Cutting tool (Endmill, Broach) Mold (Die) |
|
| FAXG2 | - - | - - | - - | - - | - - | - - | Cutting tool (Broach, Bandsaw) Mold (Die) |
|
Heat treatment conditions
| NACHI Grade |
Annealed hardness (HB) |
Austenitizing | Tempering |
Practical hardness (HRC) |
||
|---|---|---|---|---|---|---|
| Temperature | Cooling | Temperature | Times | |||
| FAX31 | Less than 285 | 1,130 1,210°C |
A·O·H | " | " | 6266 |
| FAX38 | Less than 285 | 1,1601,210°C |
A·O·H | " | " | 6568 |
| FAX40 | Less than 285 | 1,1301,240°C |
A·O·H | " | " | 6369 |
| FAX55 | Less than 285 | 1,2001,240°C |
A·O·H | " | " | 6669 |
| FAXG1 | Less than 320 | 1,1401,210°C |
A·O·H | " | " | 6670 |
| FAXG2 | Less than 320 | 1,1401,200°C |
A·O·H | " | " | 6669 |