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2017 Hot Sale Hot-Rolled Steel Rail P43kg/M U71Mn For Industrial
1.43kg/m steel rail/heavy rail
2.Specification:43kg
3.Material: U71Mn/U71,45Mn,50Mn
4.Execution standard:, GB2585-2007
5.Length: 12,12.5 m
U71Mn | Mechanical property | Chemical composition | |||||||||
Yield strength | Tensile strength | Elongation | Hardness | C | Si | Mn | S | P | |||
MPa | kg/mm² | MPa | kg/mm² | min | HB | ≤ | ≤ | ||||
880min | 9 | 260 | 0.65-0.77 | 0.15-0.35 | 1.10-1.50 | 0.04 | 0.04 |