Manganese in ASTM1566 improves hardenability, φ 12mm steel can be quenched in oil, and its surface decarburization tendency is smaller than that of silicon steel. The comprehensive mechanical properties after heat treatment are better than that of carbon steel, but it has overheating sensitivity and temper brittleness.
Supply Form & Size
| Form of Supply | Size(mm) | Length(mm) |
| Round bar | 6.0mm-1200mm | 2.5m-10m |
Chemical Composition&Related Specifications
| Grade | C | Si | Mn | P | S | Cr |
| 6150 | 0.48-0.53 | 0.15-0.35 | 0.7-0.9 | ≤0.035 | ≤0.04 | 0.8-1.1 |
Brand comparison table
| AISI/SAE | DIN/EN | BS | JIS/KS | China |
| 6150 | 51CrV4(1.8159) | 51CrV4(1.8159) | SUP10 | 50CrVA |
Mechanical Property
| tensile strength σb (MPa) | ≥1274(130) |
| yield strength σs (MPa | ≥1127(115) |
| hardness | hot-rolling≤321HB;Cold drawing+heat treatment≤321HB |

