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To achieve the best casting a particular application at the lowest consistent with the component’s require-ments, it is necessary to have an under-standing of the six types of cast iron: gray iron; ductile iron; compacted graphite iron (CGI); malleable iron; white iron; alloyed iron.
1 kwi 2024 · Have you ever wondered about the fascinating world of cast iron? In this blog post, we'll dive into the various types of cast iron and explore their unique properties and applications. As an experienced mechanical engineer, I'll share my insights and knowledge to help you understand the complexities of this versatile material.
This document specifies the properties of unalloyed and low-alloyed grey cast irons used for castings that have been manufactured in sand moulds or in moulds with comparable thermal behaviour.
They can be divided into five groups, based on composition and metallurgical structure: white cast iron, malleable cast iron, gray cast iron, ductile cast iron, compacted graphite iron and alloy cast iron.
Cast iron material grade comparison and equivalent grades for grey iron, malleable iron and nodular iron.
Carbon (C), ranging from 1.8 to 4 wt%, and silicon (Si), 1–3 wt%, are the main alloying elements of cast iron. Iron alloys with lower carbon content are known as steel. Cast iron tends to be brittle, except for malleable cast irons.
High-nickel cast irons are widely used and are generally known as Ni-Resist cast irons. Austenitic gray cast irons containing 14% to 30% nickel are resistant to mildly oxidizing acids, including sulphuric acid at room-temperature.