Material Notes:
Oversized Charpy specimens austenitized at 1010°C for 1 hr., air-cooled, and double tempered to indicated hardness in Charpy Impact notes prior to grinding to finished size.
| Physical Properties |
|
Metric |
English |
Comments |
| Density |
8.19 g/cc |
0.296 lb/in³ |
|
| Mechanical Properties |
|
Metric |
English |
Comments |
| Hardness, Rockwell C |
40 - 55 |
40 - 55 |
|
| Bulk Modulus |
160 GPa |
23200 ksi |
Typical for steel. |
| Shear Modulus |
80.0 GPa |
11600 ksi |
Typical for steel. |
| Thermal Properties |
|
Metric |
English |
Comments |
| CTE, linear |
12.4 µm/m-°C |
27.0 W/m-K |
|
| Thermal Conductivity |
6.89 µin/in-°F |
187 BTU-in/hr-ft²-°F |
|
| Processing Properties |
|
Metric |
English |
Comments |
| Processing Temperature |
595 - 675 °C |
1100 - 1250 °F |
Tempering Temperature |
|
1095 - 1205 °C |
2003 - 2201 °F |
Tempering Temperature |
| Annealing Temperature |
870 - 900 °C |
1600 - 1650 °F |
|
| Component Elements Properties |
|
Metric |
English |
Comments |
| Carbon, C |
0.30 % |
0.30 % |
|
| Chromium, Cr |
3.3 % |
3.3 % |
|
| Manganese, Mn |
0.30 % |
0.30 % |
|
| Silicon, Si |
0.34 % |
0.34 % |
|
| Tungsten, W |
9.0 % |
9.0 % |
|
| Vanadium, V |
0.25 % |
0.25 % |
|
