HAYNES® 230® alloy for Cyclone Separators Tech Brief
For Long-Term Performance in Cyclone Separators
When vortex finder tubes and other internals in your cyclone separator aren’t giving you the performance life you need to avoid costly downtime and replacements, turn to HAYNES® 230® alloy for the best in resistance to high-temperature warpage and oxidation damage. 230® alloy is suited for long-term continuous exposure at temperatures as high as 2100°F (1149°C). It is designed to outlast traditional stainless steels, nickel-chromium alloys, and iron-nickel-chromium materials by as much as 10 to 1! And, 230® alloy is both readily fabricable and repairable! Its retention of ductility after being in service for years means you can perform reforming and weld repair operations without any need for pre- or post-repair treatment. So consider HAYNES® 230® alloy next time your plant is down for cyclone separator maintenance. It’s the choice that will keep your plant up, and your maintenance costs down.
Product Description
HAYNES® 230® alloy is a top-of-the-line high-performance, industrial heat-resistant alloy for applications demanding high strength as well as resistance to environment. It is a substantial upgrade in performance capabilities from common iron-nickel-chromium and nickel-chromium alloys, and displays the best combination of strength, stability, environmental resistance, and fabricability of any commercial nickel-base alloy. HAYNES® 230® alloy can be utilized at temperatures as high as 2100°F (1150°C) for continuous service. Its resistance to oxidation, combustion environments and nitriding, recommends it highly for applications such as nitric acid catalyst grids, high-temperature bellows, industrial furnace fixtures and hardware, strand annealing tubes, thermocouple protection tubes, and many more.
Resistance to High-Temperature Combustion Gas Environments* | ||||
Alloy | Maximum Metal Affected | |||
1800°F (980°C) 1000 h | 2000°F (1095°C) 500 h | |||
– | mils | µm | mils | µm |
230® | 3.5 | 89 | 5.7 | 145 |
X | 6.4 | 163 | 13.5 | 343 |
RA330 | 11.8 | 300 | 13.6 | 343 |
800H | 15.3 | 389 | 27.2** | 691** |
Type 310 | 16.5 | 419 | 24.1 | 612 |
600 | 17.8 | 452 | 20.7 | 526 |
601 | 20.0 | 508 | >24.0 | >610 |
Type 304 | >23.0*** | >504*** | – | – |
Type 316 | >23.0*** | >504*** | – | – |
* Samples exposed to product of combustion from burning a mixture of No. 1 and No. 2 fuel oils, and cycled to <500ºF (280ºC) every 1/2 hour.
** Exposed only 400 hours
*** Exposed only 6.5 hours
Nominal Composition
Nickel | Balance |
Cobalt | 5 max. |
Chromium | 22 |
Molybdenum | 2 |
Tungsten | 14 |
Iron | 3 max. |
Silicon | 0.4 |
Manganese | 0.5 |
Carbon | 0.10 |
Aluminum | 0.3 |
Boron | 0.015 max. |
Lanthanum | 0.02 |
Typical Tensile Properties, Plate
Test Temperature | 0.2% Yield Strength | Ultimate Tensile Strength | Elongation 2 in. (51 mm) | |||
°F | °C | ksi | MPa | ksi | MPa | % |
RT | RT | 57 | 395 | 125 | 860 | 50 |
1000 | 540 | 40 | 275 | 103 | 705 | 53 |
1200 | 650 | 40 | 275 | 98 | 675 | 55 |
1400 | 760 | 42 | 275 | 88 | 605 | 53 |
1600 | 870 | 37 | 255 | 63 | 435 | 65 |
1800 | 980 | 21 | 145 | 35 | 240 | 83 |
2000 | 1095 | 11 | 76 | 20 | 140 | 83 |
2100 | 1150 | 7 | 47 | 13 | 91 | 106 |
2200 | 1205 | 4 | 30 | 9 | 65 | 109 |
Typical Rupture Properties, Plate
Test Temperature | Typical Rupture Properties: Stress Required to Produce Rupture in Hours Shown | ||||||
100 h | 1,000 h | 10,000 h | |||||
°F | °C | ksi | MPa | ksi | MPa | ksi | MPa |
1200 | 650 | 56.0 | 385 | 42.5 | 295 | 29.0 | 200 |
1400 | 760 | 27.0 | 185 | 20.0 | 140 | 14.2 | 98 |
1600 | 870 | 13.7 | 95 | 9.5 | 66 | 6.2 | 43 |
1800 | 980 | 6.0 | 41 | 3.0 | 21 | 1.6 | 11 |
1900 | 1040 | 3.5 | 24 | 1.8 | 12 | – | – |
2000 | 1095 | 2.1 | 14 | 1.0 | 7 | – | – |
2100 | 1150 | 1.2 | 8 | 0.6 | 4 | – | – |
Typical Room Temperature Physical Properties
Physical Property | British Units | Metric Units |
Density |
0.324 lb/in3 |
8.97 g/cm3 |
Electrical Resistivity | 49.2 µohm-in | 125 µohm-cm |
Modulus of Elasticity |
30.6 x 106 psi |
211 GPA |
Thermal Conductivity |
62 Btu-in/ft2-h-°F |
8.9 W/m-°C |
Specific Heat | 0.095 Btu/lb-°F | 397 J/Kg-°C |
Environmental Resistance
Oxidation in Air – Excellent at 2100°F (1095°C) Nitriding – Best Commercial alloy
Sulfidation – Equal to X alloy Chlorination – Equal to 625 alloy
Carburization – Equal to X alloy Hydrogen Embrittlement – Excellent