Düsseldorf, 20-03-08 

Austenitic Cast Iron Features Properties for Extreme Applications

Also known as 'NiResist', austenitic cast iron includes a variety of high-alloy grades of cast iron with lamellar graphite (GJL) or spheroidal graphite (GJS). Because of their special technological and physical properties, they are suitable for many applications under extreme conditions. Depending on the grade, these cast-iron materials may feature high resistance to heat or scaling, unusually high or low heat expansion, favourable running properties, high resistance to corrosion or erosion, outstanding elongation, or toughness at low temperatures. In addition, these grades are not magnetisable and insensitive to pitting, which makes them ideal for applications involving contact with seawater, such as pumps for desalination plants, as well as for other maritime applications. Further typical end uses include piston-ring carriers, highly-stressed car exhaust manifolds, heat-resistant non-scaling components for industrial furnaces, heat-resistant glass moulds, and non-magnetic components. Unlike the non-corroding heat-resistant steel grades, austenitic cast-iron materials are easier to pour and machine, which is why they are more economical in production in many cases.

A report that is available free of charge from Zentrale für Gussverwendung (ZGV) in Düsseldorf comprehensively describes this versatile cast-iron material and its properties, characteristic production features, and possible end uses.

For more information, please request your free copy of this special issue at zgv@bdguss.de.

 

The subjects dealt with in previous ZGV information brochures include

• Welding of Castings – an Overview
• High-tech Castings Mirror the Dynamic Development of Wind Power Generation
• Cast Iron with Lamellar Graphite – still the most Frequently Used Cast Iron Material
• Cast Cylinder Heads and Crankcases Offer Versatile Solutions for the Cars of Today and Tomorrow
• High-alloy Casting Materials for Special Applications in the Pump Industry World
• Steel Castings for Buildings all over the World
• What to know about Cast iron with spheroidal graphite
• Versatile Non-destructive Tests for Castings
• Black Malleable Cast Iron – Strong and Tough
• Visual Determination of the Surface Quality of Castings by Reference Samples Graphite
• New Studies of the Bending-fatigue Behaviour of Cast Iron with Spheroidal Graphite
• Continuous Castings – Versatile Quality Semis