Railway screw spike, coach screw
Follows the standard of ISO898-1, UIC864-1, NF F500-50, ASTMA66-87. We also can make the customized design.
Grade | 4.6 | 5.6 | 8.8 | 10.9 |
Material | Q235 | 35# | 45# | 40Cr |
Mechanical properties | 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 degrees without crack | Cold bending: 90 degrees without crack | Cold bending: 90 degrees without crack | Cold bending: 90 degrees without crack | |
Surface | plain (oiled), Oxide black, Zinc, HDG, wax, bitumen, Dacromet, Sherardizing | |||
Standard refers | ISO898-1, UIC864-1, and NF F500-50, ASTMA66-87 | |||
