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FGS370-17 is a ductile cast iron grade in France standard NF A32-201, which is equivalent to EN-GJS-400-15 and EN-GJS-400-18 in European standard EN 1563.
This material grade is also equal to 60-40-18 in USA standard ASTM A536, Grade 400-15 and Grade 400-18 in ISO standard ISO 1083, GGG40 in Germany standard DIN 1693, QT400-18 in China standard GB 1348, FCD400 in Japan standard JIS G5502, GS370-17 in Italy standard UNI 4544, 400/17 in UK standard BS 2789, etc.
The chemical composition of NF A32-201 FGS370-17 ductile cast iron:
In standard NF A32-201, there is no requirement to the chemical composition, so the iron foundry could adjust their chemical composition as their experience, but the mechanical properties are the necessary requirement.
Mechanical properties and microstructure of Cast integral test bar of NF A32-201 FGS370-17 ductile cast iron
France NF A32-201 FGS370-17 Ductile Cast Iron |
Grade |
Tensile strength
Rm, min. |
Proof stress
Rp0,2, min. |
Elongation
A, min. |
Hardness |
Structure |
N/mm2 |
kgf/mm2 |
tonf/in2 |
N/mm2 |
kgf/mm2 |
tonf/in2 |
% |
HB |
FGS370-17 |
370 |
37.7 |
24.0 |
230 |
23.5 |
14.9 |
17 |
≤179 |
Ferrite |
Mechanical properties and microstructure of attached test bar of NF A32-201 FGS370-17 ductile cast iron
Grade |
Thickness
/mm |
Tensile strength
σb≥/MPa |
Yield strength
σ0.2≥/MPa |
Elongation
δ5≥(％) |
Hardness
HBS |
Main microstructure |
FGS370-17 |
>30~60
>60~200 |
390
370 |
250
240 |
17
11 |
130~180 |
ferrite |
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