Gray Cast Iron
EN GJL 150 through 300 or ASTM A48 Class 25 through 45
Ductile Cast Iron (Spheroidal Graphite Iron)
EN GJS 400 through 700 or ASTM A536 Grades 60-40-18 through
100-70-03
Cast iron is an iron-carbon-material which combines many features
such as vibration damping and long lifecycle as a result of various
conditions and graphite formations. The foundry two cast iron types.
One is gray cast iron with finely distributed flake graphite and the
other one is ductile cast iron with ferrite or perlite structures to
ISO standards.
Gray cast iron with its evenly distributed lamellar graphite dampens
sound waves and is corrosion-resistant. Gray cast iron is available
in different categories (EN-GJL-150 up to 250). The established
production processes as well as the material diversity comply with
the requirements of modern technology and processing. The areas of
application for gray cast iron products extend from heavy components
for frames, gearwheels and gearboxes, driving castors and pulleys,
engine and cylinder blocks of combustion engines to brake discs,
brake cylinders and furnace components, as well as pipes, fittings
and other parts with rotational symmetry.
A special treatment with magnesium causes the globular shape of the
graphite within the casting. The so-called spheroidal or ductile
cast iron has material features similar to steel including tensile
strength and elongation. An significant advantage is given during
dynamic strain when deformations would cause a breakdown or a
failure of the unit. In addition to the areas of application for
gray cast iron, ductile cast iron is also used for punch tools,
bodies, engine and drive components, turbocharger bodies, diffusers,
for plant and engine construction, for pipes, pipelines, fittings
and valves such as gate and butterfly valves, hydrants etc.
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