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| Category |
Steel |
| Class |
Tool steel |
| Type |
Chromium hot work steel |
| Designations |
France: AFNOR Z 40 COV 5
Germany: DIN 1.2344
Italy: UNI KU
Japan: JIS SKD61
Sweden: SS 2242
United Kingdom: B.S. BH 13
United States: ASTM A681 , FED QQ-T-570 , SAE J437 , SAE J438 , SAE J467 , UNS T20813 |
| Element |
Weight % |
| C |
0.32-0.45 |
| Mn |
0.20-0.50 |
| Si |
0.80-1.20 |
| Cr |
4.75-5.50 |
| Ni |
0.3 |
| Mo |
1.10-1.75 |
| V |
0.80-1.20 |
| Cu |
0.25 |
| P |
0.03 |
| S |
0.03 |
| Properties |
Conditions |
| T (°C) |
Treatment |
| Density (×1000 kg/m3) |
|
7.76 |
25 |
| Poisson's Ratio |
|
0.27-0.30 |
25 |
| Elastic Modulus (GPa) |
|
190-210 |
25 |
| Properties |
Conditions |
| T (°C) |
Treatment |
| Thermal Expansion (10-6/ºC) |
|
10.4 |
20-100 |
| Thermal Conductivity (W/m-K) |
|
28.6 |
215 |
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