| AISI T1 | |
 | |
| Category | Steel |
| Class | Tool steel |
| Type | Tungsten high speed steel |
| Designations |
France: AFNOR 18-04-01 Germany: DIN 1.3355 Italy: UNI X 75 W 18 KU Japan: JIS SKH2 United Kingdom: B.S. BT 1 United States: AMS 5626 , ASTM A600 , FED QQ-T-590 , SAE J437 , SAE J438 |
| Composition | |
| |
| Element | Weight % |
| C | 0.65-0.80 |
| Mn | 0.10-0.40 |
| Si | 0.20-0.40 |
| Cr | 3.75-4.00 |
| Ni | 0.3 |
| W | 17.25-18.75 |
| V | 0.90-1.30 |
| Cu | 0.25 |
| P | 0.03 |
| S | 0.03 |
| Mechanical Properties | |
| |
| Properties | Conditions | ||
| T (°C) | Treatment | ||
| Density (×1000 kg/m3) | 8.67 | 25 | |
| Poisson's Ratio | 0.27-0.30 | 25 | |
| Elastic Modulus (GPa) | 190-210 | 25 | |
| Thermal Properties | |
| |
