Complaint
| Grade | c | Si | Mn | P | S | Al | Cr+Ni+Mo | Nb+V+Ti |
| NM400 | 0.10-0.40 | 0.20-0.40 | 1.00-2.00 | Max 0.015 | Max 0.003 | Min 0.020 | Max 0.9 | Trace Amount |
| NM450 | 0.10-0.40 | 0.20-0.40 | 1.00-2.00 | Max 0.015 | Max 0.003 | Min 0.020 | Max 1.2 | |
| NM500 | 0.10-0.40 | 0.20-0.45 | 1.00-2.00 | Max 0.015 | Max 0.003 | Min 0.020 | Max 1.5 | |
| NM550 | 0.10-0.50 | 0.20-0.45 | 1.00-1.50 | Max 0.015 | Max 0.003 | Min 0.020 | Max 2.0 | |
| NM600 | 0.10-0.50 | 0.20-0.45 | 1.00-1.50 | Max 0.015 | Max 0.003 | Min 0.020 | Max 2.5 | |
| XCHD400 | 0.10-0.30 | 0.20-0.40 | 1.00-2.00 | Max 0.015 | Max 0.003 | Min 0.020 | Max 0.1 | |
| XCHD450 | 0.10-0.40 | 0.20-0.40 | 1.00-2.00 | Max 0.015 | Max 0.003 | Min 0.020 | Max 0.9 | |
| XCHD500 | 0.10-0.40 | 0.20-0.45 | 1.00-2.00 | Max 0.015 | Max 0.003 | Min 0.020 | Max 1.5 |
| Grade | Size(mm) | RP0.2(Mpa) | Rm(Mpa) | A50(%) | AKV,(ºC) | KV2(J) | HBW | ||
| NM400 | 100 | 1233 | 1337 | 15 | -20 | 35 | 37 | 42 | 415 |
| NM450 | 60 | 1345 | 1434 | 9.5 | -20 | 72 | 59 | 58 | 455 |
| NM500 | 50 | 1608 | 1706 | 10.5 | -20 | 43 | 50 | 45 | 495 |
| XCHD400 | 35 | 1025 | 1161 | 17.5 | -40 | 52 | 45 | 40 | 413 |
| XCHD450 | 30 | 1281 | 1400 | 10.5 | -40 | 45 | 48 | 52 | 453 |
| XCH500 | 6 | 1465 | 1529 | 13.5 | -40 | 24 | 24 | 22 | 515 |
