PRODUCT DESCRIPTION

Haynes HR-120 alloy (UNS N08120) alloy is a solid-solution-strengthened heat-resistant alloy that provides excellent strength at elevated temperature combined with very good resistance to carburizing and sulfidizing environments. Its oxidation resistance is comparable to other widely used Fe-Ni-Cr materials, such as alloys 330 and 800H, but its strength at temperatures up to 2000ºF (1095ºC) is significantly higher, even in comparison to Ni-Cr alloys. Haynes HR-120 alloy can be readily formed hot or cold, and is commonly welded using Hynes 556 filler wire.

Haynes HR-120 Alloy Applications

Applications include those which require high strength combined with good resistance to carburizing and sulfidizing environments such as the following:
• Bar Frame Heat Treating Baskets
• Radiant Tubes
• Wire Mesh Furnace Belts and Basket Liners
• Cast Link Belt Pins
• Muffles, Retorts
• Recuperators
• Heat Treating Fixtures
• Fluidized Bed Components
• Waste Incinerators

Haynes HR-120 Alloy Heat Treatment

Haynes HR-120 alloy is furnished in the solution annealed condition, unless otherwise specified. Depending on the product form, the alloy is solution annealed at a temperature ranging from 2150 to 2250 °F (1175 to 1230 °C) and rapidly cooled.

Nominal Composition

Weight %
Iron33 Balance
Nickel37
Cobalt3 max.
Chromium25
Molybdenum1 max.
Tungsten0.5 max.
Niobium*0.7
Manganese0.7
Silicon0.6
Nitrogen0.2
Aluminum0.1
Carbon0.05
Boron0.004
Titanium0.2 max.

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