High quality carbon structural steel 600Mn

60mn is a kind of high-quality carbon structural steel with slightly higher hardness, elasticity and hardenability and good cutting ability in annealed state.

● Chemical composition:

Carbon C: 0.57-0.65

Silicon Si: 0.17-0.37

Manganese Mn: 0.70-1.00

Chromium Cr: ≤0.25

Nickel Ni: ≤0.30

Copper Cu: ≤0.25

● Mechanical properties:

Tensile strength σb (MPa) : ≥695

Yield strength σs (MPa) : ≥410

Elongation δ5/ (%) : ≥11

Section shrinkage ratio ψ/ (%) : ≥35

Steel delivery state hardness HBS 10/3000: unheat treated steel ≤269 Annealed steel ≤229

Recommended heat treatment /℃ normalizing 810

Sample size: sample blank size /mm: 25