Japanese imports of high quality carbon steel S35C

1 characterization:

High quality S35C carbon steel, used by the furnace, open hearth, or oxygen converter steelmaking method of manufacturing the entire static steel, with a uniform quality, free and defect characteristics, the steel carbon content of 0.4%, and excellent wear resistance, only ductility reduction, quenching deformation and crack easily, so the heat treatment is extremely important and must be tempered after quenching, tempering to avoid brittleness, the steel ball processing can be improved by cutting.

(2) Availability state of hardness 149 ~ 207HBS, 126 ~ 163HBS, 167 ~ 235HBS.

3 Chemical composition (mass fraction,%):
Carbon C: 0.32 ~ 0.38
Si Si: 0.15 ~ 0.35
Manganese Mn: 0.60 ~ 0.90
Sulfur S: ≤ 0.035
Phosphorus P: ≤ 0.030
Chromium Cr: ≤ 0.20
Ni-Ni: ≤ 0.20
Copper Cu: ≤ 0.30
4 Mechanical Properties:
Tensile strength σb (MPa): ≥ 510MPa
Yield strength σs (MPa): ≥ 305MPa
Elongation δ5 (%): ≥ 23%
5 normalizing standard temperature 840 ~ 890 ℃, baked air-cooled.

6 quenching, tempering standard quenching temperature 840 ~ 890 ℃, water cooling, tempering temperature of 550 ~ 650 ℃, baked quench.

7 Application examples can be used for the positioning of the mold ring, vertical runner and so on.