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  NF A32-201 FGS370-17 Ductile Cast Iron  
 

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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