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HAYNES® Alloys

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.

Natural-Gas-Fired Furnace Coupon Exposures
Alloy Nitrogen Absorption (mils/y)
214® 3
230® 11
556® 13
600 20
800H 36
304 59

Nominal Composition

230®

Nickel: Balance
Iron: 3 max.
Cobalt: 5 max.
Chromium: 22
Molybdenum: 2
Tungsten: 14
Silicon: 0.4
Manganese: 0.5
Aluminum: 0.3
Carbon: 0.10
Boron: 0.015
Lanthanum: 0.01

214®

Nickel: Balance
Iron: 3
Cobalt: 2 max.
Chromium: 16
Molybdenum: -
Tungsten: -
Silicon: 0.2 max.
Manganese: 0.5 max.
Aluminum: 4.5
Carbon: 0.04
Yitrium: 0.01
Zirconium: 0.1 max.

556®

Nickel: 20
Iron: Balance
Cobalt: 18
Chromium: 22
Molybdenum: 3
Tungsten: 2.5
Silicon: 0.4
Manganese: 1
Aluminum: 0.2
Carbon: 0.10
Nitrogen: 0.2
Tantalum: 0.6
Lanthanum: 0.02
Zirconium: 0.01

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

Test Temperature 0.2% Yield Strength Ultimate Tensile Strength Elongation
°F °C ksi ksi %
- - 230® 556® 214® 230® 556® 214® 230® 556® 214®
70 21 56.9 59.5 82.0 124.9 118.1 145.0 48 48 37
1200 649 39.0 32.8 85.0 97.2 85.4 120.0 55 52 31
1400 760 41.2 32.0 79.0 84.9 68.5 102.0 46 49 15
1600 871 32.4 28.6 47.0 58.3 47.6 60.0 59 53 15
1800 982 17.3 15.5 8.0 32.5 28.0 15.0 71 63 72
2000 1093 8.2 8.0 3.9 17.3 14.8 8.3 50 55 99
2100 1149 5.6 - 2.0 11.4 - 4.5 40 - 99
2200 1204 3.7 - 1.4 8.0 - 4.4 31 - 99
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