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HAYNES® Alloys

Applications in Waste Incinerators

HAYNES® HR-160® alloy provides the best combination of resistance to harsh, high-temperature environments and life cycle cost effectiveness of any commercially available alloy. Components produced from HR-160 alloy have exhibited outstanding performance in waste incineration applications. Field trials have demonstrated that component life extensions greater than 10X are possible with direct material substitution. HR-160 alloy utilizes high chromium and silicon contents to promote the formation of a protective oxide scale which resists attack from sulfur, vanadium, chlorides, and other salt deposits. This makes the alloy ideally suited for waste incinerator components operating up to 2200°F (1204°C), such as T/C protection tubes, dampers, tube shields, tube supports, thermos wells, combustion chambers, ducts, heat exchangers, and vortex finders.

HAYNES® HR-160® Alloy Performance Capability
Incinerator Type Field Test Conditions Performance as Compared to Current Material
Municipal Waste 800-2000°F (982-1093°C);
sulfur, chlorides, K, Zn, etc.
1300-1400°F (704-760°C);
sulfur chlorides, K, Zn, Pb
>17x better than stainless steels
9x better than 625
12x better than 825
15x better than 304
>12x better than 446
Industrial Waste 1600-1700°F (871-927°C);
sulfur chlorides, K, etc
>20x better than stainless steels
Hospital Waste 1200-1400°F (649-760°C);
sulfur chlorides, Zn, etc.
>7x better than 304 and 316
Chemical Waste 900°F (482°C);
Pb, K, S, P, Zn, and Ca
15x better than carbon steel and 600

Product Description

HAYNES HR-160 alloy is a Ni-Co-Cr-Si alloy with a stable austenitic structure. The alloy is easily fabricated using methods such as gas-tungsten-arc welding (TIG) process or gas-metal-arc welding (MIG) process. 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.

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

Field Performance- Municipal Waste Incineration

Alloy Metal Loss Maximum Metal Affected
- mils mm mils mm
HR-160® 0 0 2.0 0.05
556® 9.5 0.24 11.0 0.28
625 16.5 0.42 17.5 0.44
188 17.0 0.43 18.5 0.47
825 21.5 0.55 24.5 0.62
304SS 28.0 0.72 29.5 0.75
446SS >23.5 0.60c >23.5 0.60c
Carbon Steel 27.1 0.69 30.0 0.76

(a) test rack was exposed at 1300-1400F (704-760C) for 2 months
(b) metal loss + maximum internal penetration
(c) sample was perforated

Comparative Stress-Rupture Strengths

°F °C HR-160® RA333 800HT RA330 253 MA RA85H 309 SS 310 SS
1100 593 22.9 25.0 - - - - - -
1200 649 15.6 16.5 17.5 11.0 14.0 12.0 16.0 9.3
1300 764 10.8 12.0 11.0 - 8.5 - - -
1400 760 7.4 9.2 7.3 4.3 5.2 5.0 5.45 3.9
1500 816 5.1 5.7 5.2 - 3.75 - - -
1600 871 3.6 3.1 3.5 1.7 2.5 2.1 1.86 1.65
1700 927 2.5 1.8 1.9 - 1.65 - - -
1800 982 1.8 1.05 1.2 0.63 1.15 0.9 0.63 0.69

*ksi can be converted to MPa (megapascals) by multiplying by 6.895

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