Grade RQTAl22
Corresponding Standard GB 9437-1988
Heat resistant iron castings
Classification cast Iron
RQTAl22 Chemical Element Composition Content (%)
Component C Si Mn P S Al
Minimum Value 1.6 1 - - - 20
Maximum Value 2.2 2 0.7 0.1 0.03 24
RQTAl22 Mechanical Properties
form Test Temperature Tensile Strength
σb
Mpa
Hardness
HBW
Casting Room Temperature ≥300 241~364
Casting High temperature short-term tensile strength: 130
Casting High temperature short-term tensile strength: 77
RQTAl22 Corresponding Standards(Same grade name, different standards)

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