GGG40 is a very good material grade from ductile iron, which has good tensile strength and yield strength, and especially higher elongation rate compared with grey iron. The higher grade will mean the lower elongation, so GGG40 has the highest elongation rate in all ductile iron grades.
GGG40 is a ductile iron grade of Germany standard, which is equal to QT400, ASTM A536 60-40-18, 60-40-15, FCD400, GS400-12, FGS400-12, 400/17, 420/12, 400-12, 400-18 and SG38, SG40.
This material is suitable for many industrial and civil fields. Such as valve parts, automotive castings, truck and agricultural parts, various machinery casting parts, manhole covers, even for pump and valve parts and so on.