HAYNES® HR-160® alloy Applications in Waste Incinerators Tech Brief
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