Quality carbon structural steel: C40 (1.0511)
Implementation of the standards: EN 10083 / 2-1991
● Features and Scope:
Welding performance is poor, for the manufacture of wear parts such as shafts and gears.
● Chemical Composition:
Carbon C: 0.37 ~ 0.45
Si Si: 0.17 ~ 0.37
Mn Mn: 0.70 ~ 1.00
Sulfur S: ≤0.045
Phosphorus P: ≤0.045
Chromium Cr: ≤0.40
Ni Ni: ≤0.40
Mo Mo: ≤0.10
● Mechanical Properties:
Tensile strength σb (MPa): ≥590 (60)
Yield strength σs (MPa): ≥355 (36)
Elongation δ5 (%): ≥17
Reduction of ψ (%): ≥45
Impact energy Akv (J): ≥47
Impact toughness αkv (J / cm2): ≥59 (6)
Hardness: no heat, ≤229HB; annealed steel, ≤207HB
Sample size: Sample size is 25mm
● Heat treatment and microstructure specifications:
Heat treatment specifications: normalizing, 860 ℃; quenching, 840 ℃; tempering, 600 ℃.
● Delivery status: to heat or no heat treatment (annealing, normalizing or tempering) state delivery. Require heat treatment delivery should be specified in the contract, no heat treatment is not indicated by delivery.