A Brief Understanding of The Classification of Iron Castings

Update:31-12-2019
Summary:

Iron castings are obtained through spheroidization and […]

Iron castings are obtained through spheroidization and inoculation treatment, which effectively improves the mechanical properties of cast iron, especially the plasticity and toughness, thus obtaining higher strength than carbon steel.

The comprehensive properties of iron castings are close to that of steel and have been successfully used to cast some parts with complex stress and high requirements on strength, toughness and wear resistance. Today we will talk about the classification of iron castings.

White cast iron: carbon mostly exists in ferrite state, with bright white fracture, hard and brittle ferrite, and less application of mechanism. Carbon exists as graphite.

Gray cast iron: graphite flake exists

Malleable cast iron: flocculent

Ductile Iron: Spherical

Vermicular cast iron: vermicular

Under the same matrix structure, ductile iron has higher mechanical properties (strength, plasticity and toughness), malleable iron takes second place, vermicular iron takes second place and gray iron is poorer. However, gray cast iron is widely used in industry due to its low cost, excellent castability, machinability, wear resistance and shock absorption.

This concludes the classification of iron castings. For more casting information, please contact us: https://www.wearresistantcasting.com/