More info
Description / Abstract:
This material specification covers castings made of nodular
iron, also known as spheroidal or ductile iron, as used in
automotive and allied industries. This specification describes the
material properties, not specific casting properties, based on data
obtained from separately cast Y-block test samples. Any specific
requirements for the whole or a critical section of a casting shall
be identified on the engineering drawing.
Material Description. Nodular iron is a cast
iron with an ascast structure containing graphite of a spheroidal
or nodular shape. These irons are produced commercially by treating
molten iron of appropriate base metal composition with magnesium.
The presence of the graphite in the truly spheroidal condition
results in a significant improvement of ductility.
Applicability. Nodular cast iron is used for
those applications which require high strength, toughness and high
resistance to wear, thermal shock and scaling. Typical applications
include crankshafts, camshafts, knuckles, control arms, motor
mounts and differential carriers.