Alloy 230
UNS N06230
Description
Alloy 230 is a nickel-chromium alloy with tungsten and molybdenum additions. The combination of these metals gives Alloy 230 with many desirable properties including outstanding oxidation resistance, superior strength up to 1149 °C and nitriding-resistance. By the way, the alloy is one of the most nitriding-resistant materials available. In addition, Alloy 230 is easily fabricated and has very good forming and welding characteristics. Other attractive features include excellent creep and fatigue resistance, lower thermal expansion characteristics than most high-temperature alloys, and a pronounced resistance to grain coarsening with prolonged exposure to high temperatures. These combined properties make it very suitable for a wide variety of component applications in the aerospace and power industries.
Chemical Component
| Ni | Cr | W | Mo | Co | Al | La | Mn | C | Si | Ph | Cu | Fe | S | B | Ti |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 47-65% | 20-24% | 13-15% | 1-3% | 5% max | 0.20-0.50% | 0.005-0.05% | 0.30-1% | 0.05-0.15% | 0.25-0.75% | 0.03% max | 0.50% max | 3% max | 0.015% max | 0.015% max | 0.10% max |
Basic Information
| Items | Alloy 230 |
|---|---|
| Catalog | ACMA-Ni-A008 |
| Density | 8.968 g/cm3 |
| Melting Range | 1302-1371 °C |
Material Forms
Alfa Chemistry offers Alloy 230 in a variety of forms, including Sheet & Plate, Round Bar, etc.
Mechanical & Physical Properties
| Properties | 21.1 °C | 538 °C | 649 °C | 704 °C | 760 °C | 816 °C | 871 °C | 927 °C | 982 °C | 1093 °C |
|---|---|---|---|---|---|---|---|---|---|---|
| Ultimate Tensile Strength, MPa | 841.2 | 703.3 | 6668.8 | - | 537.8 | - | 310.3 | - | 172.4 | 89.6 |
| 0.2% Yield Strength, MPa | 420.6 | 303.4 | 303.4 | - | 324.1 | - | 234.4 | - | 124.1 | 68.9 |
| Elongation, % | 47 | 54 | 57 | - | 61 | - | 75 | - | 50 | 37 |
| 10,000 hr Rupture Strength, MPa | - | - | 186.2 | 127.6 | 91 | 57.9 | 38.6 | 22.1 | 7.6 | - |
Features
- Excellent oxidation resistance to 2100 °F
- Superior high temperature strength
- Resistant to grain coarsening at high temperatures
- Good resistance to nitriding and carburizing
Specifications
Applications
Alloy 230 can be used in a variety of applications, including:
- Transition ducts on turbine engines
- Combustion linings on turbine engines
- Furnace retorts
- Burner flame shrouds
- Vacuum heat treat fixtures
- Chains and fixtures
- Nitriding furnace internals
- Sparger tubes and recuperative internals
Among the many applications, Alloy 230 is most suitable for power generation industry.
* Technical data included herein should be used as a guideline only, and should not be construed as maximum or minimum values for specification or for final design, or for a particular use or application. The data may be revised anytime without notice.
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