| Certification | SGS/BV |
Lowest price 4140/SCM440/42CrMo4 Cold Drawn Bar Precision from Chinese mill
Yeguang steel Metal is a distributor of 4140 grade cold drawn steel bar. 4140 bars have high hardenability, and the molybdenum content provides high strength and uniformity of hardness. Unlike other grades, the carbon content of 4140 grade steel allows it to hold up well to heat treatment, while having good wear resistance and strength.
4140 Mechanical Properties (Annealed)| Tensile Strength | 95,000 psi |
| Yield Strength | 60,500 psi |
| Elongation in 2″ | 25.7% |
| Reduction of Area | 55.9% |
| Brinelle Hardness | 197 |
| Tensile Strength | 148,000 psi |
| Yield Strength | 95,000 psi |
| Elongation in 2″ | 17.7% |
| Reduction of Area | 46.8% |
| Brinelle Hardness | 302 |
| Chemcial Compositions(%): | |||||||||
| Quality Standard | Steel Grade | C | Si | Mn | P | S | Cr | Ni | Mo |
| ASTM A29 | 4140 | 0.38-0.43 | 0.15-0.35 | 0.75-1.00 | ≤0.035 | ≤0.040 | 0.80-1.10 | / | 0.15-0.25 |
| JIS G4053 | SCM440 | 0.38-0.43 | 0.15-0.35 | 0.60-0.90 | ≤0.030 | ≤0.030 | 0.90-1.20 | ≤0.25 | 0.15-0.30 |
| EN 10083-3 | 42CrMo4 | 0.38-0.45 | ≤0.40 | 0.60-0.90 | ≤0.025 | ≤0.035 | 0.90-1.20 | 0.15-0.30 | / |
Steel Grades
Surface Condition:
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