Ductile iron in China
Ductile iron is also known as nodular
cast iron, spheroidal graphite iron, spherulitic
Ductile iron is a
kind of spherical graphite cast iron. The
globalization and inoculation processes effectively
improved the mechanical properties, particularly
increased plasticity and toughness, which is higher
than the strength of carbon steel.
Ductile iron is a kind of malleable iron. Ductile
iron in the graphite shape was spherical. As the
spherical graphite metal matrix separated the role
of smaller, so it has high strength, ductility and
toughness, so a wider application, in some cases can
replace the carbon steel. Ductile iron is widely
used in construction tools, equipment manufacturing,
such as flat-panel buttons, butterfly buckle, wall
nuts, washers and other fields.
Carbon steel has less than 0.3% carbon content,
while the cast iron and ductile iron with carbon
content the amount of at least 3%. The low-carbon
steel makes the existence of carbon as free graphite
sheet structure will not form. Cast iron in the
natural form of carbon free form of graphite sheets.
During inoculation period, the graphite sheet change
through special processing methods into a tiny ball.
This improvement made after the ball made of cast
iron ductile iron and steel than the more superior
compared to the physical properties.
Ductile Iron Grade:
ASTM A536 - 60-40-18, 65-45-12, 70-50-05;
DIN 1693 - GGG40, GGG50; DIN EN 1563 - EN-GJS-350,
EN-GJS-400-15, EN-GJS-450-10, EN-GJS-500-7;
ISO 1083 - 400-15, 400-18, 450-10, 500-7;
JIS G5502 - FCD400-15, FCD400-18, FCD450-10,
BS 2789 - 400/18, 420/12, 450/10, 500/7.
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