Grade | 4.6 | 5.6 | 8.8 (Gr5) | 10.9(Gr8) |
Material | Q235 | 35# | 45# | 40Cr |
Mechanical Properities | Tensile strength: ≥400Mpa | Tensile strength: ≥500Mpa | Tensile strength: ≥800Mpa | Tensile strength: ≥1000Mpa |
Yield strength: ≥240Mpa | Yield strength: ≥300Mpa | Yield strength: ≥640Mpa | Yield strength: ≥900Mpa | |
Elongation:≥22% | Elongation:≥20% | Elongation:≥12% | Elongation:≥9% | |
Cold bending: 90 degree without cracks | Cold bending: 90 degree without cracks | Cold bending: 90 degree without cracks | Cold bending: 90 degree without cracks | |
Rail Track Bolt Surface Treatment | Plain (oiled), Oxide black, Zinc, HDG, Wax, bitumen, Dacromet, Sherardizing | |||
Standard Reference | UIC864-2,DIN5903-2,AS1085.4/6/7,BS64,AREMA,JIS, | |||
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