Product Overview –Incoloy 330 / SS 330 / RA330 Tubes
Incoloy 330 Tubes, also known as SS 330 Tubes or RA330® Tubes, are premium austenitic nickel-iron-chromium alloy tubes engineered for continuous service in extreme high-temperature environments. Designated as UNS N08330, this alloy provides exceptional resistance to oxidation, carburization, nitriding, thermal shock, and repeated heating and cooling cycles while maintaining excellent mechanical strength
Unlike conventional stainless steel tubes, Incoloy 330 maintains excellent structural stability even during prolonged exposure to temperatures approaching 1150°C, making it one of the preferred materials for furnace equipment and thermal processing industries.
These tubes are widely installed in industrial furnaces, radiant tubes, heat treatment plants, petrochemical processing units, ethylene cracking furnaces, heat exchangers, steam generators, power plants, cement industries, glass manufacturing plants, and thermal processing equipment.
Industrial buyers frequently search for Incoloy 330 Tubes Supplier, RA330 Tubes, SS 330 Tubes, UNS N08330 Tubes, ASTM B535 Tubes, Heat Treatment Tubes, Furnace Tubes, High Temperature Alloy Tubes, Heat Exchanger Tubes, RA330 Tubes UAE, RA330 Tubes Saudi Arabia, Buy Incoloy 330 Tubes, and RA330 Tube Price.
As a trusted supplier, exporter, and stockist of Incoloy 330 / SS 330 / RA330 Tubes,we serve customers across the UAE, Saudi Arabia, Qatar, Oman, Kuwait, Bahrain, India, Africa, Europe, and Southeast Asia, delivering quality products, competitive pricing, and reliable logistics for industrial and infrastructure projects.
Material Specification -Incoloy 330 / SS 330 / RA330 Tubes
Note: RA330® is a registered trademark commonly used in the industry for Alloy 330. Equivalent specifications may vary depending on the product form and project requirements.
Technical Specifications –Incoloy 330 / SS 330 / RA330 Tubes
| Outside Diameter: | 6.35 mm to 114.3 mm |
| Wall Thickness: | 0.5 mm to 12 mm |
| Length: | Up to 18 Meters & Custom Length |
| Pipe Ends: | Plain End, Annealed Ends |
| Product Type | Seamless & Welded Pipes |
| Surface Finish: | Bright Annealed, Pickled, Polished |
| ASTM : | ASTM B535* |
| Alloy Family: | Nickel-Iron-Chromium Alloy |
| Available Sizes: | ¼", ⅜", ½", ⅝", ¾", 1", 1¼", 1½", 2", 2½", 3", 4" |
Custom lengths and project-specific sizes are available on request.
Third Party Inspection Available
Material is commonly supplied to customer specifications and applicable ASTM / ASME requirements depending on the product form and project requirements. Mechanical and chemical values are as per standard limits. Mill Test Certificates (MTC) available upon request.
Chemical Composition –Incoloy 330 / SS 330 / RA330 Tubes
(As per ASTM specification)
| Element | Max (%) |
|---|---|
| Iron (Fe) | Balance |
| Carbon (C) | ≤0.08 |
| Nickel (Ni) | 34.0–37.0% |
| Chromium (Cr) | 17.0–20.0% |
| Manganese (Mn) | ≤2.0% |
| Silicon (Si) | 1.0–1.5% |
| Sulphur (S) | ≤0.03% |
| Phosphorus (P) | ≤0.03% |
Note: The high nickel and chromium content, combined with controlled silicon levels, provides exceptional resistance to oxidation, carburization, nitriding, and thermal cycling, making Alloy 330 one of the leading materials for furnace and heat treatment applications.
Mechanical Properties of Incoloy 330 / SS 330 / RA330 Tubes
| Property | Value (Min) |
|---|---|
| Yield Strength (0.2%) | ≥275 MPa |
| Tensile Strength | ≥620 MPa |
| Elongation | ≥35% |
| Melting Point | 1343–1371°C |
| Density | 8.14 g/cm³ |
| Hardness | ≤190 HRC |
| Modulus of Elasticity | 195 GPa |
Note :Alloy 330 maintains excellent ductility and mechanical stability even after prolonged exposure to elevated temperatures, helping reduce thermal distortion and extending equipment life.
Why Choose Incoloy 330 / SS 330 / RA330 Tubes?
Applications of Incoloy 330 / SS 330 / RA330 Tubes
Where Incoloy 330 / SS 330 / RA330 Tubes are used:
- 🔸Chemical Processing Equipment
- 🔸Gas Turbine Exhaust Systems
- 🔸Combustion Chambers
- 🔸Furnace Rollers
- 🔸High Pressure Piping
- 🔸Pressure Vessels
- 🔸Mining Equipment
- 🔸Furnace Components
- 🔸Decorative Steel Projects
Understanding Stainless Steel Grades ?
have a look what experts says !
Key Advantages of Incoloy 330 / SS 330 / RA330 Tubes
Best Alternatives to Incoloy 330 / SS 330 / RA330 Tubes
- This process provides:
- 🔸 Excellent creep strength
- 🔸 Outstanding oxidation resistance
- 🔸 Reliable long-term thermal stability
Best for: Heat exchangers, reformers, boilers, and power generation equipment.
- 🔸 Superior oxidation resistance at very high temperatures
- 🔸 Excellent scaling resistance
- 🔸 Outstanding fatigue performance
Best for: Industrial furnaces, heat treatment plants, and thermal processing systems.
- 🔸 Good high-temperature oxidation resistance
- 🔸 Excellent fabrication characteristics
- 🔸 More economical for moderate high-temperature service
Best for: Furnace components, boilers, kilns, and industrial heating equipment.