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SOLUTIONS: Cast Iron

2.07

High alloy cast irons

Ni-Resist irons

High alloy cast iron is a general classification that applies to gray iron, white irons, and ductile irons. They are considered high alloy when the alloy contents exceeds 3%. The addition of alloys to that extent radically changes the microstructure and the properties of the castings to which they are added. The most common alloying elements are nickel, chromium and molybdenum. In general high alloy cast iron is weldable.

Meehanite

In this series of cast iron alloys the corrosion resistance of gray cast iron is enhanced by the addition of appreciable amounts of nickel, copper and silicon.

The name Meehanite refers to a group of cast ferrous materials manufactured under rigid metallurgical control so that their properties meet established engineering specifications. There are many types of Meehanite, ranging from soft types with exceptional machinability to stronger types whose strength properties approximate or exceed that of many cast steels. Characteristics: High density Very high strength Fair weldability

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General analysis of Ni-Resist irons: Carbon Silicon Manganese Nickel Chromium Copper Molybdenum

1,8–2,6% 5,0–6,0% 0,4–1,0% 13,0–32,0% 1,8–5,5% 10,0% maximum 1,0% maximum

Characteristics:

High resistance to corrosive acids and atmospheric corrosion. Excellent weldability. Strength 137 MPa - 313 Mpa