HAYNES® HR-160® alloy for Severely Sulfidizing Environments Tech Brief
For Severely Sulfidizing and Other Aggressive Environments
HAYNES® HR-160® alloy has excellent resistance to sulfidation and chloride attack in both reducing and oxidizing atmospheres. The alloy also has exceptionally good resistance to oxidation, hot corrosion, carburization, metal dusting, nitridation and corrosion at corrosion attack by low melting point compounds such as those formed by phosphorus, vanadium, and other impurities. HR-160 alloy utilizes high chromium and silicon contents to form a protective oxide scale which renders the alloy resistance to various forms of high-temperature corrosion.
Current Applications
Waste Incineration
Thermocouple Protection Tubes
Gas Sampling Probes
Tube Shields
Feed Chutes Combustion Chamber Liners & Internals
Refractory Anchors
Dampers
Others
Coal and Oil Fired Boilers & Fluidized Bed System
Burners
Coal Feed Chutes
Expansion Joints
Others
Sulfur Recovery Plants
Burners
Tube Shields in Waste Heat Recovery Boilers
Chemical Plant
Recuperators and Heat Exchangers
Claciners
Other Application
Cement Kilns & Other High-temperature
Furnaces
Pulp and Paper Recovery Boilers
Coal Gasification
Industrial Gas Turbines
Nominal Composition
Nickel | Balance |
Cobalt | 29 |
Chromium | 28 |
Iron | 2 max. |
Molybdenum | 1 max. |
Silicon | 2.75 |
Tungsten | 1 max. |
Manganese | 0.5 |
Titanium | 0.5 |
Carbon | 0.005 |
Sulfidation Resistance
Lab Tests at 1600°F (870°C)/215 h in Ar-5%h2-5%CO-1%CO2-0.15%H2S Po2= 3 x 10-19 atm, Ps2= 0.9 x 10-6 atm
Alloy Description
HAYNES® HR-160® alloy is a Ni-Co-Cr-Si alloy with a stable austenitic structure. The alloy is readily fabricated, and may be welded by gas-tungsten-arc (TIG) or gas-metal-arc (MIG) techniques. HR-160® filler metal is recommended for joining HR-160 alloy. When HR-160® alloy is welded to other alloys, such as stainless steels, 556® filler metal should be used. HAYNES® HR-160® alloy is available as plate, sheet, strip, billet, bar, wire, pipe, and tubing.
Typical Tensile Properties, Plate
Test Temperature | 0.2% Yield Strength | Ultimate Tensile Strength | Elongation | Reduction of Area | |||
°F | °C | ksi | MPa | ksi | MPa | % | % |
70 | 20 | 45.6 | 315 | 111.2 | 765 | 68 | 73 |
1000 | 540 | 25.5 | 175 | 81.8 | 565 | 76 | 69 |
1200 | 650 | 25.7 | 175 | 75.8 | 525 | 70 | 67 |
1400 | 760 | 24.7 | 170 | 62.1 | 430 | 73 | 64 |
1600 | 870 | 22.41 | 150 | 38.3 | 265 | 85 | 84 |
1800 | 980 | 10.8 | 74 | 20.4 | 140 | 90 | 98 |
2000 | 1095 | 5.0 | 34 | 10.8 | 74 | 88 | 98 |
2100 | 1150 | 2.3 | 16 | 6.0 | 41 | 113 | 94 |
2200 | 1205 | 1.6 | 11 | 4.4 | 30 | 110 | 94 |