Product Introduction

When engineers search for Alloy 28 Superalloy, they are usually not looking for a general stainless steel grade. They need a material that can maintain long-term corrosion resistance in highly aggressive chemical environments where conventional stainless steels cannot provide sufficient service life.

As a high alloy stainless steel and super austenitic stainless steel, Alloy 28 combines high chromium, molybdenum and nickel content to provide excellent resistance against sulfuric acid, phosphoric acid, chloride-containing media and organic acids. Compared with standard austenitic stainless steels, UNS N08028 Alloy offers improved resistance to pitting, crevice corrosion and stress corrosion cracking, making it suitable for demanding chemical processing applications.

Mono Group supplies Alloy 28 Pipe, Alloy 28 Plate, Alloy 28 Sheet, Alloy 28 Tube and Alloy 28 Bar with customized dimensions and international specifications for industrial applications requiring reliable corrosion performance.

Chemical components(%)

Mechanical properties

Physical properties

Key Properties of Alloy 28

1. Sulfuric Acid and Chemical Corrosion Resistance

One of the main reasons engineers choose Alloy 28 for sulfuric acid service is its ability to resist corrosion across a wide range of sulfuric acid concentrations.

The combination of chromium, molybdenum and nickel provides:

• Sulfuric Acid Resistant Alloy performance

• Phosphoric Acid Resistant Alloy capability

• Organic Acid Resistant Alloy characteristics

• Strong resistance to localized corrosion

This makes UNS N08028 material suitable for chemical equipment exposed to mixed acidic environments.

2. Chloride Corrosion Resistance

Many chemical processing systems contain chloride ions that can cause rapid localized corrosion in ordinary stainless steels.

Alloy 28 provides enhanced resistance against:

• Pitting corrosion

• Crevice corrosion

• Chloride stress corrosion cracking

For this reason, Alloy 28 Corrosion Resistant Alloy is frequently considered for marine environments, chemical plants and pollution control systems.

3. Mechanical Stability and Fabrication Performance

Besides corrosion resistance, Alloy 28 offers good fabrication characteristics.

Typical advantages include:

• Excellent weldability

• Good formability

• Stable mechanical properties after fabrication

• Suitable performance for welded equipment manufacturing

This allows Alloy 28 Pipe and Plate to be fabricated into pressure equipment, heat exchangers and chemical processing components.

Specifications and Standards

Mono Group supplies Alloy 28 corrosion resistant alloy in various product forms according to engineering requirements, including pipes, tubes, plates, sheets, bars and fabricated components.

Alloy 28 vs Conventional Stainless Steel

For applications involving sulfuric acid, phosphoric acid or complex chemical environments, Alloy 28 Superalloy provides a higher corrosion resistance level than conventional stainless steels.

Typical Applications of Alloy 28

1. Chemical Processing Equipment

Alloy 28 for Chemical Processing is widely used where equipment contacts aggressive chemical media.

Typical applications include:

• Acid processing equipment

• Chemical reactors

• Storage tanks

• Piping systems

2. Sulfuric Acid and Phosphoric Acid Plants

Because of its strong acid resistance, Alloy 28 for sulfuric acid service and Alloy 28 for phosphoric acid production are common selections in:

• Sulfuric acid plants

• Fertilizer production

• Wet process phosphoric acid equipment

3. Heat Exchangers and Pressure Equipment

For equipment requiring both corrosion resistance and fabrication reliability:

• Alloy 28 Heat Exchanger Material

• Alloy 28 Pressure Vessel Components

• Alloy 28 Process Piping

are commonly considered.

4. Petrochemical and Environmental Equipment

The material is also suitable for:

• Petrochemical processing systems

• Pollution control equipment

• Flue gas treatment systems

• Pulp and paper processing equipment

Frequently asked questions

Q: What is Alloy 28 used for?

A: Alloy 28 is mainly used for chemical processing equipment, sulfuric acid plants, phosphoric acid production systems, heat exchangers and pressure equipment requiring high corrosion resistance.

Q: Is Alloy 28 better than 316L stainless steel for acid applications?

A: Yes. Compared with 316L stainless steel, Alloy 28 corrosion resistant alloy provides better resistance to sulfuric acid, chloride corrosion, pitting and crevice corrosion.

Q: What is the equivalent material of Alloy 28?

A: The common designations include UNS N08028 and Sanicro 28. These names refer to the same corrosion resistant alloy family.

Q: Which Alloy 28 products can be supplied?

A: Common supply forms include Alloy 28 Pipe, Alloy 28 Seamless Pipe, Alloy 28 Tube, Alloy 28 Plate, Alloy 28 Sheet, Alloy 28 Bar and Alloy 28 Forgings.

Q: What standards are available for Alloy 28 products?

A: Depending on product form, Alloy 28 can be supplied according to standards such as ASTM B709, ASTM B468, ASTM B464, ASTM B473 and ASTM A182.

Mono Group supplies corrosion resistant materials for chemical processing, energy and industrial equipment applications. We provide Alloy 28 Supplier solutions including pipes, plates, sheets, bars and customized products according to customer requirements.

With experience supplying nickel alloys and high-performance materials, we support customers with material selection, specification confirmation and export supply services.

For Alloy 28 Pipe, UNS N08028 Plate or Sanicro 28 material requirements, contact info@monokj.com and our team will assist with suitable material options and quotation support.