UNF FGE50-7 is a type of ductile cast iron used in Spain, FGE50-7 is the UNF designation for this material.

It is equal to EN-GJS-500-7 in European standard EN 1563. The followings are the mechanical properties and chemical composition for EN-GJS-500-7 ductile cast iron, which should be equivalent to FGE50-7.

Mechanical Properties:
Tensile strength is minimum 500 Mpa.
Yield strength is minimum 320 Mpa.
Elongation is minimum 7%.
Hardness range is Brinell Hardness 170-230.
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.

Chemical Composition:
The normal chemical composition for this grade is as the following:
C: 2.7-3.7, Si: 0.8-2.9, Mn: 0.3-0.7, P: ≤0.1, S: ≤0.02

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.

Applications for FGE50-7 Ductile Cast Iron:
FGE50-7 ductile cast iron has the characteristics of good mechanical strength and good mechanical stability, so it is normally used to produce general mechanics, manhole covers, gear cases, hydraulics, etc.

Equivalent Grades for FGE50-7 Ductile Cast Iron:

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