Grade SCS 18
Corresponding Standard JIS G 5121-2003
Corrosion-Resistant Cast Steels for General Applications
Classification Cast Steel
Properties Corrosion Resistance
SCS 18 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni
Minimum Value - - - - - 23 19
Maximum Value 0.2 2 2 0.04 0.04 27 22
SCS 18 Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Hardness
HBW
Solution (S) ≥450 *
≥195
≥28 ≤183
Approximate Comparison Table Corrosion-Resistant Cast Steels
Japan United States
JIS ASTM
SCS 18 CK20

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