S45C Carbon Structural Steel

Description:

S45Cis a kind of high carbon steel grade which based on the standard of JIS G 4051- 2009. S45C steel has excellentweldability and machinability, and it can be subjected to various heat treatments. S45C is suitable for shafts studs, keys.

Equivalent Grades:

GB/JB 45#

DIN 1.0503

AFNOR CC45

NF C45

UNI C45

NBN C45-1

SS 1650

UNE F.114

AISI/SAE 1045

ISO C45E4

BS IC45/080A47。

Delivery condition:

hot rolled or forged + normalizing + Tempering + Quenching and tempering + Normalizing and tempering + Annealing .

Chemicalcomposition:

GRADE	C	Si	Mn	P	S	Cr	Cu	Ni
S45C				≤0.03	≤0.035	≤0.2	≤0.30	≤0.03

Physical properties:

GRADE	Tensile Strength	Yield Strength	Elongation	contraction	impact strength	Hardness
	σb/MPa	σs/MPa	δ5/%	ψ/%	J/cm2	HB
S45C	≥686	≥490	≥17	≥45	≥78	201-269

Heat treatment:

quenching temperature 820 ℃ ~ 870 ℃, water-cooled, tempering temperature 550 ~ 650 ℃,

Application:

Widely used in machinery manufacturing, this grade has good mechanical properties. But this is a medium carbon steel, Quenching performance is not good, this grade can be quenched to HRC42 ~ 46. if need a good surface hardness, and also need superior mechanical properties, usually do surface carburizing, so this can get the required surface hardness.

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