hot sale carbon steel sa573 Grade 70, thin plate price

45Mn2 steel is a medium-carbon quenched and tempered steel with high strength, wear resistance and hardenability. The critical hardening diameter in oil is 10-25mm, and the critical hardening diameter in water is 22-45. After quenching and tempering, 45Mn2 alloy structural steel has good comprehensive mechanical properties and good machinability; but it has overheating sensitivity and temper brittleness tendency during heat treatment, easy to crack in water quenching, sensitive to white spots, low weldability and cold deformation plasticity and other shortcomings.

Cold formed hot rolled pickled automotive structural steel QSTE500TM
Material QSTE500TM chemical composition (melting analysis)%
Carbon: ≤0.12, Silicon: ≤0.35 ,Manganese: ≤1.70, Phosphorus: ≤0.03, Sulfur: ≤0.025, Titanium: ≤0.22, Niobium: ≤0.09
Aluminum : ≥0.015
Specimen test (tensile, bend, specimen is transverse; Mpa).
Yield strength MPa: ≥500
Tensile strength MPa: 550-700
Elongation: ≥17

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