Food Processing Nickel Based Superalloy 28 Sanicro 28 Corrosion Resistance
Alloy 28: High-Performance Nickel-Based Alloy Renowned For Superior Corrosion Resistance In Harsh Chemical Environments
Alloy 28 Product Description:
Alloy 28, also known as Sanicro 28, is a nickel-based superalloy designed to provide exceptional resistance to corrosion in aggressive environments. It contains significant amounts of nickel, chromium, molybdenum, and copper, which collectively contribute to its superior performance against corrosion, particularly in sulfuric acid and other acidic environments. Alloy 28 is characterized by its high mechanical strength, excellent weldability, and ease of fabrication into various forms such as sheets, plates, bars, pipes, and fittings. It is widely used in industries such as chemical processing, pharmaceuticals, food processing, pulp and paper, and desalination plants where reliability and durability are paramount.
Key Features:
- Corrosion Resistance: Outstanding resistance to corrosion in sulfuric acid and other aggressive chemical environments.
- Mechanical Properties: High strength and toughness suitable for demanding industrial applications.
- Weldability: Good weldability using standard welding techniques, facilitating ease of fabrication and installation.
- Temperature Resistance: Capable of withstanding elevated temperatures up to 450°C (842°F), ensuring performance in high-temperature processes.
- Applications: Used extensively in chemical processing, pharmaceuticals, food processing, pulp and paper industries, and desalination plants where corrosion resistance and reliability are critical.
Alloy 28 stands out for its robust performance in corrosive environments, making it a preferred choice for applications requiring long-term durability and resistance to chemical degradation.
Here is a detailed composition table for Alloy 28 (Sanicro 28):
| Element | Composition Range (%) |
|---|---|
| Nickel (Ni) | Approx. 31.0 |
| Chromium (Cr) | Approx. 27.0 |
| Molybdenum (Mo) | Approx. 3.0 |
| Copper (Cu) | Approx. 1.5 |
| Nitrogen (N) | Approx. 0.11 |
| Iron (Fe) | Balance |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 0.7 |
| Carbon (C) | ≤ 0.02 |
| Phosphorus (P) | ≤ 0.02 |
| Sulfur (S) | ≤ 0.01 |
Key Points:
- Nickel (Ni): Provides corrosion resistance and strength.
- Chromium (Cr): Enhances resistance to oxidation and corrosion.
- Molybdenum (Mo): Improves resistance to pitting and crevice corrosion.
- Copper (Cu): Contributes to resistance against corrosive environments.
- Nitrogen (N): Enhances mechanical properties and corrosion resistance.
- Iron (Fe): Base element providing structural integrity.
- Manganese (Mn), Silicon (Si): Trace elements that influence material properties and processing characteristics.
- Carbon (C), Phosphorus (P), Sulfur (S): Trace elements managed for minimal impact on alloy properties.
Alloy 28 (Sanicro 28) is recognized for its exceptional corrosion resistance in sulfuric acid and other aggressive chemical environments, making it suitable for various industrial applications where corrosion resistance and reliability are crucial.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.

