Aisi A3 Cold Rolled Tool Steel Bar High Pressure Steel Pipe For Producing
A3 steels should be heated uniformly to 790-820°C (1436-1508°F) until completely heated through. Then heated to the hardening temperature of 950-980°C(1742-1796℉), soak at the temperature enough time, let A3 steel to be thoroughly heated .
Chemical composition
| C(％) | 0.95～1.05 | Si(％) | 0.10～0.50 | Mn(％) | 0.40～1.00 | P(％) | ≤0.030 |
| S(％) | ≤0.040 | Cr(％) | 4.75～5.50 | Mo (％) | 0.90～1.40 | V(％) | 0.15～0.50 |
Tempering of A3 tool steel
Tempering of A3 steels is performed at 150-400°C (302-752°F), Soak well at the selected temperature and soak for at least one hour per 25mm of total thickness. Get Rockwell C hardness of 57 to 62. Others different Heat treatment temperature will get different hardness. Below only for reference.
Temperature [℃] 150 200 250 300 350 400
Hardness [HRc] 62-61 61-60 60-59 59-58 58-57 58-57
