USA UNS G2500
Corresponding Standard ASTM A 159-1983(R2024)
Standard Specification for Automotive Gray Iron Castings
Classification cast Iron
Chemical Element Composition Content (%)
Component C Si Mn P S More
Minimum Value 3.2 2 0.6 - - Approximate Carbon Equivalent:4.0~4.25
Maximum Value 3.5 2.4 0.9 0.2 0.15
Mechanical Properties
Tensile Strength
σb
ksi
Hardness
HBW
Deflection f
inch
≥25000 HB
170~229
≥0.17

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