STRUCTURAL CARBON STEELS SC GRADE
MATERIALS GRADE |
CHEMICAL COMPOSITION % | ||||
C | Si | Mn | P | S | |
S10C | 0.08~0.13 | 0.15~0.35 | 0.30~0.60 | <0.030 | <0.035 |
S12C S15C |
0.10~0.15 0.13~0.18 |
0.15~0.35 | 0.30~0.60 | <0.030 | <0.035 |
S17C S20C |
0.15~0.20 0.18~0.23 |
0.15~0.35 | 0.30~0.60 | <0.030 | <0.035 |
S22C S25C |
0.20~0.25 0.22~0.28 |
0.15~0.35 | 0.30~0.60 | <0.030 | <0.035 |
S28C S30C |
0.25~0.31 0.27~0.33 |
0.15~0.35 | 0.30~0.90 | <0.030 | <0.035 |
S33C S35C |
0.30~0.36 0.32~0.38 |
0.15~0.35 | 0.30~0.90 | <0.030 | <0.035 |
S38C S40C |
0.35~0.41 0.37~0.43 |
0.15~0.35 | 0.30~0.90 | <0.030 | <0.035 |
S43C S45C |
0.40~0.46 0.42~0.48 |
0.15~0.35 | 0.30~0.90 | <0.030 | <0.035 |
S48C S50C |
0.45~0.51 0.47~0.53 |
0.15~0.35 | 0.30~0.90 | <0.030 | <0.035 |
S53C S55C |
0.50~0.56 0.52~0.58 |
0.15~0.35 | 0.30~0.90 | <0.030 | <0.035 |
S58C | 0.55~0.61 | 0.15~0.35 | 0.30~0.90 | <0.030 | <0.035 |
S09CK | 0.07~0.12 | 0.15~0.35 | 0.30~0.60 | <0.025 | <0.025 |
S15CK | 0.13~0.18 | 0.15~0.35 | 0.30~0.60 | <0.025 | <0.025 |
S20CK | 0.18~0.23 | 0.15~0.35 | 0.30~0.60 | <0.025 | <0.025 |
HEAT TREATMENT
MATERIALS GRADE |
HEAT TREATMENT ℃ | |||
NORMALIZING | ANNEALING | quench | TEMPER | |
S10C | 900~950 Air cooled | ab. 900 Furnace cooled | ||
S12C S15C |
880~930 Air cooled | ab. 880 Furnace coole | ||
S17C S20C |
870~920 Air cooled | ab. 860 Furnace cooled | ||
S22C S25C |
860~910 Air cooled | ab. 850 Furnace cooled | ||
S28C S30C |
850~900 Air cooled | ab. 840 Furnace cooled | 850~900 Water quench | 550~650 Rapidly cooled |
S33C S35C |
840~890 Air cooled | ab. 830 Furnace cooled | 840~890 Water quench | 550~650 Rapidly cooled |
S38C S40C |
830~880 Air cooled | ab. 820 Furnace cooled | 830~880 Water quench | 550~650 Rapidly cooled |
S43C S45C |
820~870 Air cooled | ab. 810 Furnace cooled | 820~870 Water quench | 550~650 Rapidly cooled |
S48C S50C |
810~860 Air cooled | ab. 800 Furnace cooled | 810~860 Water quench | 550~650 Rapidly cooled |
S53C S55C |
800~850 Air cooled | ab. 790 Furnace cooled | 800~850 Water quench | 550~650 Rapidly cooled |
S58C | 800~850 Air cooled | ab. 790 Furnace cooled | 800~850 Water quench | 550~650 Rapidly cooled |
S09CK | 900~950 Air cooled | ab. 900 Furnace cooled | st. 880~920 Oil (Water) quench 2nd. 750~800 Water quench | 150~200 Air cooled |
S15CK | 880~930 Air cooled | ab. 880 Furnace coole | 1st. 870~920 Oil (Water) quench 2nd. 750~800 Water quench | 150~200 Air cooled |