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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