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HAYNES® Alloys

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
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