Alloy 330 (UNS N08330 ) is a fully austenitic, iron-nickel-chromium alloy specifically formulated for consistent performance in severe high-temperature environments. The controlled addition of silicon, combined with a high nickel/chromium matrix, provides superior resistance to oxidation, carburization, and thermal fatigue.
1. Product Specifications & Physical DataZYTC Alloy supplies UNS N08330 in a full range of mill forms and finished components to support fabricators and end-users in the thermal processing sector. Available Forms: Bar, billet, sheet, plate, strip, seamless/welded pipe, welded fittings, and custom forgings.
| Chemical Composition (Nominal) | Content (%) |
|---|
| Nickel (Ni) | 34 - 37 | | Chromium (Cr) | 17 - 20 | | Iron (Fe) | Balance (approx. 43) | | Silicon (Si) | Added for oxidation resistance | | Manganese (Mn) | ≤2 |
| Physical Property | Metric | Imperial |
|---|
| Density | 8.08 g/cm³ | 0.292 lb/in³ |
| Mechanical Properties (Annealed) | Metric | Imperial |
|---|
| Tensile Strength | 600 MPa | 87 ksi | | Yield Strength | 280 MPa | 40.6 ksi | | Elongation at Break | 45% | 45% |
2. Operating Conditions & Selection CriteriaAlloy 330 (UNS N08330 ) is selected for applications where standard stainless steels fail due to scaling or thermal cycling. It is a solid-solution strengthened alloy, meaning it retains structural integrity without requiring heat treatment. Maximum Service Temperature: Effective up to 1150°C (2100°F) in oxidizing atmospheres. Environmental Resistance: The composition forms a tight, adherent oxide scale that resists spalling. It offers exceptional resistance to carburization and nitriding atmospheres common in petrochemical furnaces. Thermal Stability: Designed for cyclic conditions; resists embrittlement and thermal shock during rapid heating and cooling.
3. Fabrication, Comparison & SupplyCompared to lower-nickel heat-resistant alloys, Incoloy® 330 provides a superior balance of workability and high-temperature strength. Fabrication: Exhibits excellent weldability and formability. It can be readily fabricated using standard shop practices, making it suitable for complex fixtures, radiant tubes, and retorts. Material Alternative: Often specified over Alloy 600 or 800H when increased resistance to sulfur and oxidation is required in industrial furnace environments. Why Specify ZYTC Alloy: As a certified supplier, we provide traceable chemistry, verified mechanical properties, and consistent dimensional tolerances. We support projects requiring ASME codes and NACE standards.
Contact ZYTC Alloy for certified Alloy 330 (UNS N08330 ), technical datasheets, or pricing on standard sizes and custom-forged components. Email:daisy@zytcsteel.com WhatsApp/WeChat: +86 17335753350 |
