- Excellent resistance to sulfuric acid and phosphoric acid
- High resistance to pitting and crevice corrosion
- Superior performance in chloride-containing environments
- Good weldability and fabrication properties
- Strong resistance to stress corrosion cracking
- Reliable performance in harsh industrial conditions
Alloy 28, also known as UNS N08028/ Sanicro 28 , is a high-alloy austenitic stainless steel designed for superior corrosion resistance in aggressive environments. It contains high levels of chromium, nickel, and molybdenum, making it highly resistant to acids, chloride stress corrosion cracking, and pitting.
Alloy 28 is widely used in chemical processing, oil and gas, marine, and power generation industries where strong corrosion resistance and durability are essential.
Key Features of Alloy 28
- Excellent resistance to sulfuric acid and phosphoric acid
- High resistance to pitting and crevice corrosion
- Superior performance in chloride-containing environments
- Good weldability and fabrication properties
- Strong resistance to stress corrosion cracking
- Reliable performance in harsh industrial conditions
Alloy 28 Chemical Composition
| Element | Content (%) |
|---|---|
| Nickel (Ni) | 30.0 – 34.0 |
| Chromium (Cr) | 26.0 – 28.0 |
| Molybdenum (Mo) | 3.0 – 4.0 |
| Copper (Cu) | 0.6 – 1.4 |
| Carbon (C) | Max 0.02 |
| Nitrogen (N) | 0.15 – 0.30 |
| Iron (Fe) | Balance |
Alloy 28 Mechanical Properties
| Property | Value |
| Tensile Strength | ≥ 500 MPa |
| Yield Strength | ≥ 214 MPa |
| Elongation | ≥ 35% |
| Hardness | ≤ 220 HB |
Applications of Alloy 28
Alloy 28 is commonly used in industries that require exceptional corrosion resistance:
- Chemical processing equipment
- Heat exchangers
- Oil and gas processing
- Marine engineering
- Fertilizer production plants
- Pulp and paper industry
- Desulfurization systems
- Offshore platforms
- Pressure vessels
FAQ
What is Alloy 28 used for?
Alloy 28 is commonly used in chemical processing, oil and gas, marine engineering, and heat exchanger applications due to its excellent corrosion resistance.
Is Alloy 28 resistant to corrosion?
Yes, Alloy 28 provides strong resistance to sulfuric acid, phosphoric acid, chloride stress corrosion cracking, and pitting corrosion.
What is the UNS number for Alloy 28?
The UNS designation for Alloy 28 is UNS N08028.
Is Alloy 28 suitable for acidic environments?
Yes, Alloy 28 is specifically designed for acidic and chloride-rich environments where enhanced corrosion resistance is required.
What forms are available for Alloy 28?
Alloy 28 is available as pipe, tube, plate, sheet, bar, rod, fittings, and flanges.
Alloy 28 Supplier & Manufacturer
We provide high-quality Alloy 28 materials for global industrial applications. Available in custom dimensions, specifications, and finishes to meet project requirements.
Contact us for Alloy 28 pricing, technical specifications, and bulk order inquiries.
Email: sales@hengyimetal.com
WhatsApp: +86 19521258704
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