한국 스틸 라운드 바 제조사
4330V alloy steel bar has hardenability that is improved with the addition of vanadium. In the heat treated condition 4330V has good fatigue strength and toughness. Machining is best when annealed, normalized and tempered. It also may be welded with traditional methods.
| Minimum Properties | Tensile Strength , psi | 130,000 |
| Yield Strength, psi | 115,000 | |
| Elongation | 16% | |
| Hardness | BHN 321 - 375 | |
| Chemistry | Carbon( C) | .30 -.34% |
| Chrome (Cr) | 0.75-1.0% | |
| Manganese (Mn) | 0.75-1.0% | |
| Molybdenum (Mo) | 0.40 - .50% | |
| Nickel ( Ni) | 1.65-2.0% | |
| Phosphorus (P) | 0.025% | |
| Sulphur (S) | 0.010% | |
| Silicon (Si) | 0.15- 0.35% | |
| Vanadium( V) | 0.05 - 0.10 % |