FGG25 is a material grade of gray cast iron in Belgium standard NBN 830-01. The followings are the chemical composition, mechanical properties, applications and the worldwide equivalent grades for FGG25 grey cast iron.

Chemical composition in % for FGG25 (Belgium: NBN 830-01) gray cast iron:

As for normal grey iron, the chemical composition is not important comparatively. The iron foundries could adjust the compositions according to their experience as long as they could meet the physical and mechanical requirements.

The mechanical properties for FGG25 (Belgium: NBN 830-01) gray cast iron:
-From Belgium NBN 830-01 1970

Yield Strength: No Requirement
Brinell hardness is about 180 - 255 BHN.

Only the tensile strength is the quality inspection standard. Other mechanical properties are only for reference unless the buyers have particular requirements.

Applications for FGG25 (Belgium: NBN 830-01) gray cast iron:
FGG25 gray cast iron is suitable for manufacturing steel-making rail plate, cylinder liner, pump body, valve body, gear box, gear, marking plate, level gauge, machine tool bed, column, cylinder and steam (diesel) oil engine piston ring, piston, etc.

Worldwide equivalents of grade FGG25 (Belgium: NBN 830-01):

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