UNS N06230 Alloy 230 – Superior Oxidation Resistance Up to 2100°F | Available in Plate, Sheet, Strip, Wire, Bar, Pipe & Forgings | ZYTC Alloy
Alloy 230 (UNS N06230) – High-Temperature Nickel superalloy
Alloy 230 (UNS N06230), also known commercially as Haynes® 230®, is a nickel-chromium-tungsten-molybdenum superalloy that delivers an exceptional combination of high-temperature strength, oxidation resistance, and long-term thermal stability. This solid-solution strengthened material is engineered for extreme operating environments where conventional alloys simply cannot perform.
At ZYTC Alloy, we specialize in the production and supply of Alloy 230 in virtually every form—plate, sheet, strip, wire, bar, pipe, and forgings—manufactured to the most rigorous international standards including ASTM B435, AMS 5878, AMS 5891, and EN specifications. Our commitment to standardization, process optimization, and professionalism ensures that every product leaving our facility meets or exceeds customer requirements.
Chemical Composition of Alloy 230 (UNS N06230)
The superior performance of Alloy 230 derives from its carefully balanced chemical composition. Below is the nominal composition range for UNS N06230:
| Element | Content (Wt.%) |
|---|---|
| Nickel (Ni) | Balance |
| Chromium (Cr) | 20.0 – 24.0 |
| Tungsten (W) | 13.0 – 15.0 |
| Molybdenum (Mo) | 1.0 – 3.0 |
| Cobalt (Co) | 5.0 max |
| Iron (Fe) | 3.0 max |
| Chromium (Cr) | 20.0 – 24.0 |
| Silicon (Si) | 0.25 – 0.75 |
| Manganese (Mn) | 0.30 – 1.00 |
| Aluminum (Al) | 0.20 – 0.50 |
| Carbon (C) | 0.05 – 0.15 |
| Lanthanum (La) | 0.005 – 0.05 |
| Boron (B) | 0.015 max |
| Phosphorus (P) | 0.030 max |
| Sulfur (S) | 0.015 max |
The addition of tungsten (up to 15%) provides solid-solution strengthening, while chromium enhances oxidation resistance. The precise lanthanum addition contributes to superior scale adhesion at extreme temperatures. The creep resistance of Alloy 230 is optimized through controlled boron content.
Mechanical Properties of Alloy 230 (UNS N06230)
Alloy 230 exhibits outstanding mechanical properties across a wide temperature range, making it one of the most robust nickel-based superalloys available. Typical properties for Alloy 230 in the annealed condition (per ASTM B435 and AMS 5878) are summarized below:
| Mechanical Property | Value (Typical) |
|---|---|
| Tensile Strength, Ultimate | 110 – 140 ksi (758 – 965 MPa) |
| Tensile Strength, Yield (0.2% offset) | 310 – 450 MPa (45 – 65 ksi) |
| Elongation at Break | 30 – 44% |
| Heat Treatment (Annealed) | 2048 – 2246°F (1120 – 1230°C) |
| Suggested Operating Conditions | –300°F to 2100°F (–184°C to 1149°C) |
Alloy 230 maintains its mechanical integrity at temperatures up to 2100°F (1149°C) for prolonged exposures. It is particularly effective for very long-term applications at temperatures of 1200°F (650°C) or more, and is capable of outlasting stainless steels and nickel alloys by as much as 100 to 1 depending upon the temperature. The higher strength of Alloy 230 allows for design section thicknesses as much as 75 percent thinner than lesser alloys with no loss in load-bearing capability.
Key physical properties of UNS N06230:
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Density: 0.327 lb/in³ (9.05 g/cm³)
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Modulus of Elasticity: 30.6 × 10³ ksi (211 GPa) at 70°F (20°C)
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Melting Range: 2375 – 2500°F (1302 – 1371°C)
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Coefficient of Expansion: 7.4 µin/in-°F (70°F to 1000°F)
Applications of Alloy 230 (UNS N06230)
Alloy 230 combines properties that make it ideally suited for a wide variety of component applications across multiple demanding industries.
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Combustion cans and combustion linings
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Transition ducts
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Flame holders
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Thermocouple sheaths and protection tubes
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Gas turbine hot section components
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Heat exchangers
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High-temperature bellows
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Furnace retorts, chains, and fixtures
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Burner flame shrouds
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Recuperator internals and dampers
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Nitriding furnace internals
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Heat-treating baskets, grates, and trays
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Sparger tubes
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Cyclone internals
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Catalyst grid supports in ammonia burners
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High-temperature heat exchangers and ducts
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High-strength thermocouple protection tubes
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Key process internals
Additional applications include resistance heater components, wire mesh belts, heat-treating fixtures, basket liners, muffles and retorts.
Alloy 230 Product Forms & Manufacturing Capabilities
ZYTC Alloy maintains full manufacturing capabilities for Alloy 230 in the following forms:
Our Alloy 230 products are manufactured in strict compliance with ASTM, AMS, and EN standards. We also offer custom fabrication to customer drawings, ensuring that your specific dimensional and performance requirements are precisely met.
ZYTC Alloy – Your Trusted Alloy 230 Supplier
At ZYTC Alloy, we are committed to delivering high-quality Alloy 230 materials that meet the stringent demands of aerospace, power generation, chemical processing, and industrial heating applications.
Our production and inspection processes are built upon three core principles: Standardization, Process Optimization, and Professionalism. Every stage—from raw material selection through final inspection—is meticulously controlled to ensure consistent chemical composition, mechanical properties, dimensional tolerances, and overall quality.
Recent Success Story: ZYTC Alloy recently completed and delivered an export order of Alloy 230 (UNS N06230) plate to South Korea, manufactured to ASTM B435 standard in dimensions 1.27 × 914 × 3048 mm. The product underwent comprehensive final testing and was certified qualified before release to the customer. This successful delivery demonstrates our unwavering commitment to quality, fast delivery lead times, competitive pricing, and professional service.
Whether you require Alloy 230 plate, sheet, strip, wire, bar, pipe, forgings, or custom-fabricated components, ZYTC Alloy is your one-stop solution for high-performance nickel superalloy materials. Contact us today to discuss your specific Alloy 230 requirements.
