Complaint
| Grade | C | Si | Mn | P | S | Cr | Mo | V | Al |
| 37Mn | 0.36-0.40 | 0.17-0.30 | 1.55-1.70 | Max 0.015 | Max 0.010 | Max0.20 | Max0.10 | Max 0.05 | - |
| 37Mn/1 | 0.36-0.40 | 0.17-0.30 | 1.55-1.70 | Max 0.015 | Max 0.010 | Max0.20 | Max0.10 | Max 0.05 | 0.02- 0.045 |
| 37Mn/2 | 0.34-0.38 | 0.17-0.30 | 1.50-1.70 | Max 0.015 | Max 0.010 | Max0.20 | Max0.10 | Max 0.05 | |
| 34Mn2V | 0.32-0.36 | 0.17-0.35 | 1.50-1.70 | Max 0.015 | Max 0.010 | Max0.20 | Max0.10 | 0.08-0.12 | - |
| 30CrMo | 0.28-0.32 | 0.17-0.35 | 0.45-0.65 | Max 0.015 | Max 0.010 | 0.90-1.1 | 0.18-0.25 | Max 0.02 | 0.02-0.045 |
| 35CrMo | 0.33-0.39 | 0.17-0.35 | 0.45-0.65 | Max 0.015 | Max 0.010 | 0.90-1.1 | 0.18-0.25 | Max 0.05 | - |
| 34CrMo4 | 0.30-0.35 | 0.17-0.35 | 0.65-0.80 | Max 0.015 | Max 0.010 | 0.90-1.1 | 0.18-0.25 | Max 0.05 | 0.02-0.045 |
| As<0.02%,Sn<0.02%,As+Sn+Sb+Pb+Bi<0.035,V+Nb+Ti+B+Zr<15% | |||||||||
| Grade | Heating Temperature (ºC) | Cooling way | Tensile strength (Mpa) | Yield Strength (Mpa) | Elongation | Impact value |
| 37Mn | 820-860 quenching 550-650 tempering | water | >=750 | >=630 | >=16 | >=27(-50ºC) |
| 37Mn/1 | 820-860 quenching 550-650 tempering | water | >=750 | >=630 | >=16 | >=30(-50ºC) |
| 37Mn/2 | 820-860 quenching 550-650 tempering | water | >=750 | >=630 | >=16 | >=30(-50ºC) |
| 34Mn2V | 820-860 quenching 550-650 tempering | water | >=745 | >=530 | >=16 | >=27(-50ºC) |
| 30CrMo | 820-860 quenching 550-650 tempering | water | >=930 | >=785 | >=12 | >=27(-50ºC) |
| 35CrMo | 820-860 quenching 550-650 tempering | water | >=980 | >=835 | >=12 | >=27(-50ºC) |
| 34CrMo4 | 820-860 quenching 550-650 tempering | water | >=950 | >=850 | >=14 | >=30(-50ºC) |
