Complaint
| Standard | Grade | C | Mn | P | S | Si | Cr | Mo |
| ASTM A29 | 4130 | 0.28-0.33 | 0.40-0.60 | 0.035 | 0.04 | 0.15-0.35 | 0.80-1.10 | 0.15-0.25 |
| EN10250 | 25CrMo4/ | 0.22-0.29 | 0.60-0.90 | 0.025 | 0.035 | <=0.40 | 0.90-1.2 | 0.15-0.30 |
| /EN10083 | 1.7218 | |||||||
| JIS G4105 | SCM430/ | 0.28-0.33 | 0.60-0.85 | 0.03 | 0.03 | 0.15-0.35 | 0.90-1.2 | 0.15-0.30 |
| SCM2 |
| Equivalent Grades | |
| Standard | AISI / SAE 4140 |
| UNS | - |
| WERKSTOFF NR. | 41CrMo4, 42CrMo4, 42CrMoS4, 43CrMo4 |
| BS 970 | 708M40, 708A42, 709M40, En19, En19C |
| UNI | 41CrMo4, 38CrMo4 (KB), G40 CrMo4, 42CrMo4 |
| JIS | SCM 440, SCM 440H, SNB 7, SCM 4M, SCM 4 |
| EN name | 42CrMo4 |
| EN # | 1.7223, 1.7225, 1.7227, 1.3563 |
| Mechanical Properties | ||
| Mechanical Properties | Metric | Imperial |
| Hardness, Brinell | 163 | 163 |
| Hardness, Knoop (Converted from Brinell hardness) | 184 | 184 |
| Hardness, Rockwell B (Converted from Brinell hardness) | 84 | 84 |
| Hardness, Vickers (Converted from Brinell hardness) | 170 | 170 |
| Tensile Strength, Ultimate | 565 MPa | 81900 psi |
| Tensile Strength, Yield | 310 MPa | 45000 psi |
| Elongation at Break (in 50 mm) | 16.00% | 16.00% |
| Reduction of Area | 40.00% | 40.00% |
| Modulus of Elasticity (Typical for steel) | 200 GPa | 29000 ksi |
| Bulk Modulus (Typical for steel) | 140 GPa | 20300 ksi |
| Poissons Ratio (Typical For Steel) | 0.29 | 0.29 |
| Shear Modulus (Typical for steel) | 80 GPa | 11600 ksi |
