Grade QT400-18
Other Names
Corresponding Standard YB /T 036.2-1992
Classification cast Iron
QT400-18 Mechanical Properties
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Hardness
HBW
Impact Energy Absorption
KV2
J
QT400-18 (separately cast samples) ≥400 ≥250 ≥18 130~180 room temperature 23±5℃
≥11
QT400-18L(separately cast samples) low temperature -20±2℃
≥10
QT400-18A(cast-in samples) wall>30~60mm ≥390 ≥250 ≥18 130~180 room temperature 23±5℃
≥11
QT400-18A (cast-in samples) wall>60~200mm ≥370 ≥240 ≥12 130~180 ≥10
QT400-18AL (cast-in samples) wall >30~60mm low temperature -20±2℃
≥10
QT400-18AL (cast-in samples) wall>60~200mm ≥8
Approximate Comparison Table cast iron
China Japan United States International Organization for Standardization France European Standard Sweden United Kingdom Australia
GB JIS ASTM ISO NF EN/NF EN Numerical Grade SS BS EN/BS Australian Standard AS
QT400-18 FCD400-18 60-40-18 400-18
400-18/S
400-18/U
400-18
FGS400-18
EN-GJS-400-18 5.3105
(EN-JS1020)
0717-02 400/18 300-17
QT400-18 Corresponding Standards(Same grade name, different standards)

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