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Grade

International Grade Comparison

Grey Cast Iron Grade Chart

ISO 185:2020 India
(IS 210)
USA
(ASTM A48)
Europe
(EN 1561)
Japan
(JIS G5501)
Germany
(DIN 1691)
China
(GB 9439)
Typical Minimum Tensile Strength Typical Hardness
(BHN)
ISO 150 FG 150 Class 15 EN-GJL-150 FC150 GG15 HT150 150 Mpa 150 – 200
ISO 200 FG 200 Class 20 EN-GJL-200 FC200 GG20 HT200 200 Mpa 170 – 220
ISO 250 FG 260 Class 30 EN-GJL-250 FC250 GG25 HT250 250 Mpa 190 – 260
ISO 300 FG 300 Class 45 EN-GJL-300 FC300 GG30 HT300 300 Mpa 210 – 270
ISO 350 FG 350 Class 50 EN-GJL-350 FC350 GG35 HT350 350 Mpa 220 – 290
ISO 400 FG 400 Class 60 GG40 400 Mpa 250 – 320

International Grade Comparison

Ductile Iron Grade Chart

Int'l Equivalents India
(IS 1865)
USA
(ASTM A536)
Europe
(EN 1563)
Japan
(JIS G5502)
Germany
(DIN 1693)
China
(GB 1348)
Tensile Strength
(Min. N/mm²)
Elongation
(Min. %)
Hardness
(HBS)
ASTM 60-40-18
EN-GJS-400-18
SG 370/17 60-40-18 EN-GJS-400-18 FCD 400 GGG40 QT400-18 370 17 130 - 180
ASTM 65-45-12
EN-GJS-400-15
SG 400/12 60-40-12 EN-GJS-400-15 FCD 400 GGG40 QT400-15 400 12 130 - 180
ASTM 70-50-05
EN-GJS-500-7
SG 500/7 70-50-05 EN-GJS-500-7 FCD 500 GGG50 QT500-7 500 7 160 - 240
ASTM 80-55-06
EN-GJS-600-3
SG 600/3 80-60-03 EN-GJS-600-3 FCD 600 GGG60 QT600-3 600 3 190 - 270
ASTM 100-70-03
EN-GJS-700-2
SG 700/2 100-70-03 EN-GJS-700-2 FCD 700 GGG70 QT700-2 700 2 225 - 305
EN-GJS-800-2
FCD800
SG 800/2 120-90-02 EN-GJS-800-2 FCD 800 GGG80 QT800-2 800 2 245 - 335
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