| High Speed Steel 高速钢 |
|
| SKH 9 High Speed Steel |
|
| Chemical Composition (analysis %) |
| C |
Si |
Mn |
Cr |
Mo |
W |
V |
| 0.85 |
0.3 |
0.3 |
4.0 |
5.0 |
6.0 |
2.0 |
|
|
| Nearest Equivalent |
| AISI |
JIS |
WN(werkstoff number) |
| M2 |
SKH9 |
1.3343 |
|
|
| Application |
Drill, tap, end mill, milling cutter etc
Punch and dies for cold and hot working |
|
| Heat Treatment |
| Harden at (Temper at 550°C) |
1200°C |
1150°C |
1100°C |
| Hardness (HRc) |
62-64 |
61-63 |
57-59 |
|
|
| 回火图 Tempering Graph |
 |
|
| SKH 55 High Speed Steel With Co |
|
| Chemical Composition (analysis %) |
| C |
Si |
Mn |
Cr |
Mo |
V |
W |
Co |
| 0.92 |
0.40 |
0.30 |
4.10 |
5.00 |
1.9 |
6.4 |
4.8 |
|
| ALSO SUPPLY MACHINING PLATE COMPLETE WITH HEAT-TREATMENT + SUB - ZERO |
|
|
| Nearest Equivalent |
| AISI |
JIS |
WN(werkstoff number) |
| M35 |
SKH 55 |
1.3243 |
|
| Delivery condition - annealed HB269 |
|
| Steel Properties |
High speed steel with 4.8% of Cobalt
High hardness, high red highness, good toughness |
|
| Application |
| Milling cutter, twist drill, tap, profile cutting tool, turning tool etc |
|
| Heat Treatment |
Solf annealing - 770°C-810°C, cooling in furnace
Harden at 1200°C |
| Temper at (°C) |
300 |
400 |
500 |
550 |
580 |
| Hardness (HRc) |
61 |
62 |
65 |
66 |
65 |
|
|
| 回火图 Tempering Graph |
 |
|