Grade QT550-5
Corresponding Standard GB /T 1348-2009
Spheroidal Graphite Iron Castings
Classification cast Iron
QT550-5 Mechanical Properties
Thickness
t
mm
Tensile Strength
σb
Mpa
Specified Plastic Yield Strength
Rp0.2
Mpa
Elongation or Extension Rate
δ
%
Hardness
HBW
Single casting specimen ≥550 ≥350 ≥5 180~250
QT550-5 Corresponding Standards(Same grade name, different standards)

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