S45c Medium strength steel

S45C is a medium strength steel. Suitable for shafts studs, keys etc. Available as rolled or normalised. Supplied as square bar, or round bar or flat. They are excelling in weldability & machinability , and they can be subjected to various heat treatments. Based on JIS G 4051-2009
　　S45C Mechanical Properties
　　Density (kg/m3) 7700-8030
　　Young’s Modulus (GPa) 190-210
　　Tensile Strength (Mpa) 569 (Standard) 686 (Quenching, Tempering)
　　Yield Strength (Mpa) 343 (Standard) 490 (Quenching, Tempering)
　　Poisson's ratio 0.27-0.30
　　S45C Hardness
　　Brinell Hardness (HB) 160-220 (Annealed)
　　S45C Chemical Composition
　　Carbon (C) 0.42% – 0.48%
　　Silicon (Si) 0.15% – 0.35%
　　Manganese (Mn) 0.6% – 0.9%
　　Phosphorus (P) 0.030% Max
　　Sulphur (S) 0.035% Max
　　Heat Treatment
　　The following temperature ranges are applicable for the respective heat treatment operations.
　　Full Annealing 800 - 850°C
　　Normalising 840 – 880°C
　　Hardening 820 – 860°C
　　Quenching medium Water or Oil
　　Tempering 550 – 660°C

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