Equivalent Grades of Grey Iron (Gray Cast Iron)

Country Standard Equivalent Grades of Grey Iron (Gray Cast Iron)
ISO ISO 185 100 150 200 250 300 350
China GB 9439 HT100 HT150 HT200 HT250 HT300 HT350
USA ASTM A48 NO.20 NO.30 NO.35 NO.40 NO.50 NO.55
NO.25 NO.45 NO.60
Germany DIN 1691 GG10 GG15 GG20 GG25 GG30 GG35 GG40
Austria
European EN 1561 EN-GJL-100 EN-GJL-150 EN-GJL-200 EN-GJL-250 EN-GJL-300 EN-GJL-350
Japan JIS G5501 FC100 FC150 FC200 FC250 FC300 FC350
Italy UNI 5007 G10 G15 G20 G25 G30 G35
France NF A32-101 FGL150 FGL200 FGL250 FGL300 FGL350 FGL400
UK BS 1452 100 150 200 250 300 350
India IS 210 FG150 FG200 FG260 FG300 FG350 FG400
Spain UNF FG15 FG20 FG25 FG30 FG35
Belgium NBN 830-01 FGG10 FGG15 FGG20 FGG25 FGG30 FGG35 FGG40
Australia AS 1830 T150 T220 T260 T300 T350 T400
Sweden SS 14 01 O110 O115 O120 O125 O130 O135 O140
Norway NS11 100 SJG100 SJG150 SJG200 SJG250 SJG300 SJG350
Min. Tensile Strength (Mpa) 100 150 200 250 300 350

 

How to choose the right mateiral grade?

 

G100:
For small loads, the friction and wear no special requirements for important castings, such as protective cover, cover, oil pan, hand wheels, frame, floor, hammer, small handle, etc.

G150:
Under moderate load of castings, such as the base, frame, box, knife, bed, bearing seat, table, wheels, cover, pump, valve, pipe, flywheel, motor blocks and other

G200 and G250:
Requirements withstand greater load and a certain degree of tightness or corrosion resistance of the more important castings such as cylinder, gear, base, flywheels, bed, cylinder block, cylinder liner, piston, gear box, brake wheel, coupling Plate, medium pressure valve, etc.

G300 and G350
Under high load, wear and high air tightness important castings, such as heavy machine tools, shears, presses, automatic lathe bed, frame, frame, high-pressure hydraulic parts, piston rings, force larger gear, Cams, bushings, large engine crankshaft, cylinder block, cylinder liner, cylinder head, etc.

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