Description:
S45C is a kind of high carbon steel grade which based on the standard of JIS G 4051- 2009. S45C steel has excellent weldability 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 .
Chemical composition:
| C | Si | Mn | P | S | Cr | Cu | Ni |
S45C | 0.42-0.48 | 0.15-0.35 | 0.60-0.90 | ≤0.03 | ≤0.035 | ≤0.2 | ≤0.30 | ≤0.03 |
Physical properties:
| 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.
