PRODUCTGRADEEQUIVALENT STANDARDCHEMICAL COMPOSITION (%)SUPPLY CONDITIONAPPLICATIONTYPE OF APPLICATION
AISIDINJISCSiMnCrMoNiVWOth.
Carbon Steel
1.1203

1055

CK55

S55C

0.52-0.58

0.15-0.35

0.60-0.90

0.2

0.2

P/0.03, S/0.035

229-285 HBMedium-high tensile, tough, resistant to friction. Can be hardened suitable for machinery parts such as gears, shafts, connecting rod, mold base
1.1206

1050

CK50

S50C

0.47-0.53

0.1-0.4

0.6-0.9

0.2

0.2

P/0.03, S/0.03

174-192 HBMedium tensile, low hardenability, tough, can be hot forming – machining suitable for shaft gears, rollers, ball bolts, spindle joints, molded parts.
1.1191

1045

CK45

S45C

0.42-0.5

0.15-0.35

0.4-0.8

P/0.025, S/0.035

166-183 HBMedium tensile, low hardenability suitable for general spare parts making as spindle gears, connecting rods, screw bolts, mold parts
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