60 # steel

● Chemical Composition:

Carbon C: 0.57 ~ 0.65
Si Si: 0.17 ~ 0.37
Manganese Mn: 0.50 ~ 0.80
Sulfur S: ≤ 0.035
Phosphorus P: ≤ 0.035
Chromium Cr: ≤ 0.25
Ni-Ni: ≤ 0.25
Shanghai Kai Xinte steel to provide pictures
Copper Cu: ≤ 0.25 [3]
 
● Mechanical Properties:
Tensile strength σb (MPa): ≥ 675 (69)
Yield strength σs (MPa): ≥ 400 (41)
Elongation δ5 (%): ≥ 12
Reduction of area ψ (%): ≥ 35
Hardness: no heat treatment ≤ 255HB; annealed steel ≤ 229HB