55CrMnA / 5155
Qilu
Product Description
55CrMnA SUP9 55Cr3 5155 Spring Steel
1: SUP9 Steel Introduction
JIS SUP9 Steel is a high quality Cold work Spring Steel, It belong to the high quality high carbon alloy Spring Steel. Oil Quenched & Tempered Hardness is 28-34 HRc. SUP9 steel Annealing delivery hardenss less than 250HB.
SUP9 steel Stock in warehouse
2: 5155 Quality Standard
3: SUP9 Steel Equivalent
| Country | China | Japan | BS | USA |
| Standard | GB/T 1222 | JIS G4801 | EN 10089 | AISI/SAE/ASTM ASTM A29 |
| Grade | 55CrMnA | SUP9 | 55Cr3 | 5155 |
4: SUP9 Steel Chemical Composition
| Grade | C | Si | Mn | P | S | Cr | V | Ni |
| 5155 | 0.51-0.59 | 0.15-0.35 | 0.7-0.9 | 0.035 | 0.040 | 0.7-0.9 | / | / |
| 55Cr3 | 0.52-0.59 | 0.4 | 0.7-1.0 | 0.025 | 0.025 | 0.7-1.0 | / | / |
| SUP9 | 0.52-0.60 | 0.15-0.35 | 0.65-0.95 | 0.030 | 0.030 | 0.65-0.95 | / | / |
| 55CrMnA | 0.52-0.60 | 0.17-0.37 | 0.65-0.95 | 0.025 | 0.020 | 0.65-0.95 | / | 0.35 |
