High-temperature Alloys for Heat Exchangers / Recuperators Tech Brief

Heat Exchangers and Waste Heat Recuperators

After you install a heat exchanger or a waste heat recuperator, the last thing you want to see is the tube bundle out on the floor for maintenance or repair. Specifying HAYNES^® high-temperature alloys can keep your unit in service where it belongs! In aluminum melting furnaces, glass furnaces, forging furnaces, chemical process facilities, and many complex process environments, HAYNES^® alloys give you the performance edge that means not only less frequent down time, but lower lifecycle costs as well. So whether your application is for a shell-and-tube, radiation, or plate-type heat exchanger, there’s a HAYNES^® alloy that will do the job, and keep on doing it long after lesser materials would have your maintenance man busy. Look to 214^®, 230^®, and 556^® alloys for all of your high temperature heat exchanger needs.

Nominal Composition

230^®

214^®

556^®

Product Description

HAYNES^® 230^® alloy combines excellent high-temperature strength, outstanding resistance to oxidizing environments up to 2100°F (1150°C) for prolonged exposures, premier resistance to nitriding environments, and excellent long-term thermal stability. It is readily fabricated and formed. Other attractive features include lower thermal expansion characteristics than most high-temperature alloys, and a pronounced resistance to grain coarsening with prolonged exposure to high-temperatures. HAYNES^® 556^® alloy combines effective resistance to sulfidizing, carburizing and chlorine-bearing environments at high temperatures with good oxidation resistance, fabricability, and excellent high-temperature strength. It has also been found to resist corrosion by molten chloride salts, molten zinc, and other aggressive environments. HAYNES^® 214^® alloy is the most oxidation-resistant, carburization-resistant, and chlorination-resistant alloy available as a fabricable material. Its effective use temperature limit is in excess of 2200°F (1204°C) for prolonged exposure, and up to 2400°F (1316°C) for shorter exposures.

Typical Tensile Properties