Grade QT400-18A
Corresponding Standard GB /T 1348-2009
Spheroidal graphite irons castings
Classification cast Iron
QT400-18A Mechanical Properties
Thickness
t
mm
Tensile Strength
σb
Mpa
Specified Plastic Yield Strength
Rp0.2
Mpa
Elongation or Extension Rate
δ
%
Hardness
HBW
Attached casting specimen, t≤30 ≥400 ≥250 ≥18 120~175
Attached casting specimen, 30<t≤60 ≥390 ≥250 ≥15 120~175
Attached casting specimen, 60<t≤200 ≥370 ≥240 ≥12 120~175
QT400-18A Corresponding Standards(Same grade name, different standards)

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