International Ductile Iron Grade
China
USA
UK
Germany
Japan
France
Russia
QT 400-15
—
370-17
GGG-40
FCD 400-15
EN-GJS-400-15
вч40
QT 400-18
AWS 60-40-18
400/18
FCD 400-18
EN-GJS-400-18
QT 450-10
65-45-12
450/10
FCD 450-10
EN-GJS-450-10
вч45
QT 500-7
80-55-06
500/7
GGG-50
FCD 500-7
EN-GJS-500-7
вч50
QT 600-3
80-55-06 100-70-03
600/3
GGG-60
FCD 600-3
EN-GJS-600-3
вч60
QT 700-2
100-70-03
700/2
GGG-70
FCD 700-2
EN-GJS-700-2
вч70
QT 800-2
120-90-02
800/2
GGG-80
FCD 800-2
EN-GJS-800-2
вч80
QT 900-2
900/2
EN-GJS-900-2
вч100
Ductile iron Chemical composition & Mechanical properties
Material Grade
C (%)
Si (%)
Mn (%)
P (%)
S (%)
Mg
Re
Tensile
Strength (Mpa)
Yield Strength
(Mpa)
Elongation
(%)
3.5-3.6
3.0-3.2
<0.5
<0.07
<0.02
0.04
0.02
≥400
≥250
≥15
3.6-3.8
2.5-2.7
<0.08
<0.025
0.03-0.05
0.02-0.03
≥18
3.4-3.9
2.7-3.0
0.2-0.5
<0.03
0.06-0.1
0.03-0.1
≥450
≥310
≥10
2.5-2.9
<0.6
≥500
≥320
≥7
2.0-2.4
0.5-0.7
0.035-0.05
0.025-0.045
≥600
≥370
≥3
3.7-4.0
2.3-2.6
0.5-0.8
0.035-0.065
≥700
≥420
≥2
2.5
≥800
≥480
3.5-3.7
≥900
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