Incoloy 330 is a highly capable nickel-iron-chromium alloy.It provides outstanding resistance to oxidation and thermal cycling at high temperatures.Therefore, it is ideal for applications where standard stainless steel pipes or stainless steel pipe fittings quickly succumb to heat damage.This specialized alloy offers an excellent solution for high-temperature service.
Introduction to Incoloy 330 | UNS N08330 | 1.4886
Incoloy 330 is a heat-resistant alloy.Its chemistry provides superior performance above 600℃(1112℉).The high nickel and chromium content is key.This combination resists oxidation and carburization.The material also maintains good strength at these elevated temperatures.Incoloy 330 is often used in industrial furnaces and heat treatment equipment.
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Key Advantages of Incoloy 330
The alloy forms a stable protective oxide layer.This layer prevents scaling at high temperatures.It ensures structural integrity during long service life.
It resists the adsorption of carbon compounds at high temperatures, thereby preventing metal embrittlement.
The alloy performs well under rapid temperature changes. It resists cracking and thermal fatigue.
Incoloy 330 maintains its mechanical properties. It performs reliably at elevated operating temperatures. Its strength ensures pipes and fittings remain intact.
Key Disadvantages of Incoloy 330
The alloy is designed for high heat. Its properties are not optimized for cryogenic applications. Other alloys are better suited for extremely cold service.
The material’s high nickel content makes it tough. This makes it difficult to cut and shape. Specialized tools and slower speeds are required for fabrication.
The chemical composition of this alloy includes high levels of nickel and chromium.This results in a higher price compared to standard stainless steel.Such costs are only justified in high-temperature applications.
High-nickel alloys can experience significant contraction after welding.This can cause dimensional inaccuracy.Proper fixturing and procedure control are necessary.
Chemical Composition
| Element | Ni | Cr | Fe | Mn | Si | C |
|---|---|---|---|---|---|---|
| Content (wt%) | 34.0 – 37.0 | 17.0 – 20.0 | Bal. | ≤ 1.50 | 0.75 – 1.50 | ≤ 0.08 |
Mechanical Properties
| Property | Tensile Strength | Yield Strength (0.2% Offset) | Elongation | Hardness | Density |
|---|---|---|---|---|---|
| Value (Typical) | ≥ 517 MPa(75 ksi) | ≥207 MPa(30 ksi) | ≥ 30 | ≤ 95 | 7.98g/cm³ |
Incoloy 330 Applications in Pipes and Fittings
- Furnace Components: For critical stainless steel piping, Incoloy 330 alloy ensures stable system operation under extreme temperatures. This alloy effectively resists carburization damage.
- Heat Exchangers: This alloy is an ideal choice for heat exchanger tubing, withstanding extremely high-temperature gases to ensure efficient and safe heat transfer operations.
- Mufflers and Exhaust Systems: Incoloy 330 is an outstanding choice. It is particularly suitable for systems exposed to high-temperature oxidizing gases, ensuring the long-term reliability of piping and fittings.
- Industrial Distillation Vessels: This alloy is critical for piping and distillation vessels in heat treatment processes. Its exceptional thermal cycling performance effectively prevents premature structural failure.
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