Corrosion & Heat Resistant Nickel Alloys (10086)
Part I: Corrosion-Resistant Nickel Alloys
G. SORELL, 1997—Continuing advances in metallurgical techniques and manufacturing technologies have spurred the development of nickel alloys and their broader utilization in the chemical industry.
Nickel alloys offer a combination of excellent corrosion resistance, strength, toughness, metallurgical stability, fabricability and weldability. Many nickel alloys additionally possess outstanding heat resistance, making them ideal choices for applications requiring chemical resistance and strength at elevated temperatures.
This survey of wrought nickel-based alloys (here defined as containing more than 45% nickel) covers a range of wrought corrosion-resistant alloys commonly used in chemical plant applications.
Part II: Picking Nickel-Base Alloys to Resist Heat and Corrosion
G. SORELL, 1998—The ability to withstand the combined onslaught of heat and corrosion makes nickel-base alloys a good choice for aggressive high-temperature environments. Nickel alloys find extensive application for chemical plant equipment exposed to corrosive process streams at elevated temperatures, commonly defined as more than about 1,000o F.
In many instances, high strength, chemical-resistant nickel alloys are the favored, if not the only, practical material for hostile environments beyond the capability of austenitic and superaustenitic stainless steels. Though more expensive than iron-base alloys, the excellent performance characteristics of heat-and-corrosion-resistant nickel alloys often makes them the most economical long-term choice.
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