EN-GJS-500-7, Ductile Cast Iron GGG50
EN-GJS-500-7 is middle grade of
ductile cast iron in European
DIN EN 1563, its equivalent grade in
DIN 1693 is GGG50. The followings are its other
equivalent grades, its mechanical properties, chemical composition,
castings and foundries.
This grade is equal to the material grades ISO 500-7, China QT500-7,
USA ASTM A536 70-50-05, Japan FCD500, Italy GS500-7, France
FGS500-7, India SG500/7, Spain FGE50-7, Belgium FNG50-7, Norway
EN-GJS-500-7 Mechanical Properties
Tensile strength is minimum 500 Mpa.
Yield strength is minimum 320 Mpa.
Elongation is minimum 7%.
Hardness range is Brinell
There is no impact requirement for this grade.
The tensile strength and elongation are the key inspection standard
for qualification. Buyers could judge unqualified castings according
to these two parameters. Hardness can not be taken as an quality
evaluation data unless you have special requirement.
EN-GJS-500-7 Chemical Composition
The normal chemical composition for this grade is as the following:
The chemical composition has big difference in different standards.
All compositions are just for reference. The international standards
stipulate that the manufacturers could adjust their chemical
composition according to their experience and production conditions,
as long as their material could meet the mechanical properties.
EN-GJS-500-7, or called as cast iron GGG50, is a very common and
normal cast iron grade.
Most of iron foundries in China could produce this material. So, it
is not difficult to find a foundry who could produce it, but just
difficult to find one who could produce it very well. In other
words, consistent quality is always important.
Main Casting Products
There are many casting products using this grade, such as iron
brackets for trucks, tractors, other agricultural and construction
machinery. The followings are some casting products manufactured by
iron brackets for trucks
belt pulley for stone breakers
cradle brackets for trucks
butterfly valve bodies