S45 C Steel Round Bar Size Range

S45C round bar is a medium strength steel. Suitable for shafts studs, keys etc. Available as rolled or normalized.S45C steel round bar are often used for manufacture of stamping products, sleeve, automobile shell, air compressors, pistons of vane pump, steam turbine, They are excelling in weldability machinability, and they can be subjected to various heat treatments.

S45 C Round Bar Chemical composition:

Standard	Grade	C	Si	Mn	P	S	Cr	Ni	Cu
					≤
GB	45	0.42-0.50	0.17-0.37	0.50-0.80	0.035	0.035	0.25	0.30		0.25
JIS	S45C	0.42-0.48	0.15-0.35	0.60-0.90	0.030	0.035	0.20	0.20		0.30
ASTM	1045	0.43-0.50	—	0.60-0.90	0.040	0.050	—	—		0.20

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

Size Range of S45 C Round Bar

Roundbar	Diameter(mm)	Length(mm)
	16mm-320mm	3000~6000
Plate	Thickness(mm)	Width(mm)	Length(mm)
	Max:800	205~800	2000~4000
The specification can be customized.

S45 C Round Bar Conditions of heat treatment

Annealing: 880℃ Furnace Cooling
Normalization: 880~870℃ Air Cooling
Hardening: 820~870℃ Water Cooling
Tempering: 550~650℃ Rapid Cooling
S45C Hardness

Brinell Hardness (HB) 160-220 (Annealed)

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