Alloy 28 with Excellent Resistance to Reducing and Oxidizing Acids

Alloy 28 (UNS N08028, W. Nr. 1.4563) is a nickel-iron-chromium alloy with additions of molybdenum and copper. It has excellent resistance to both reducing and oxidizing acids, to stress-corrosion cracking, and to localise attack such as pitting and crevice corrosion. The alloy are especially resistant to sulphuric and phosphoric acid. Used for chemical processing, pollution control equipment, oil and gas well piping, nuclear fuel reprocessing, acid production and pickling equipment.

Typical composition

Ni=31, Cr=27, Cu=1.0, Mo=3.5, C≤0.020, Mn≤2.0, P≤0.025, S≤0.015, Si≤0.6, Fe=Rem

Spec

ASTM B668 - 14
Standard Specification for UNS N08028 and N08029 Seamless Pipe and Tube

Advantages

• Very high corrosion resistance in strong acids
• Very good resistance to stress corrosion cracking (SCC) and intergranular corrosion in various environments
• High resistance to pitting and crevice corrosion
• Good weldability

Applications

• Phosphoric acid
• Sulphuric acid
• Oil and gas
• Fluoride-bearing media
• Nuclear power plants
• Seawater and chloride-bearing cooling water

Suzhou Xunshi New Material Co., Ltd (refered as Xunshi afterwards) is a professional supplier of high performance alloys. Our factory is specialized in manufacturing Nickel alloys & Cobalt alloys for 10⁺ years，with a company mission to provide a high quality, reliable source for precision alloys, high temperature alloys and stainless steels in both pilot run and mass production. We are professionally manufacturing materials with unique features, which are then used in aerospace, military, electronics, marine, petroleum and petrochemical industries.

Base on “Quality-oriented, Leading Technology, Continuous Improvement, Customer Satisfaction”, we believe Xunshi could be your best supplier.

Product Scope of Xunshi

· Inconel

· Hastelloy

· Incoloy

· Monel

· Nimonic

· Nitronic

· Haynes

· Special Stainless Steel

· Soft Magnetic Alloy

· Permanent Magnetic Alloy

· Elastic Alloy

· Controlled Expansion Alloy

· Magnetostrictive Material

Services of Xunshi

· Material selection

· Non-standard product research and pre-production

· Hard to find material sourcing

· Cutting/splitting

· Precision machining

· Heat treatment

· Customized Packing

· Logistics service

Advantages of Xunshi

· Experienced in industry

· Quality control system

· Authorized Certificates

· Guaranteed delivery and quality

· Customers from 30+ countries trust us

Xunshi is engaged in introducing China-origin high performance alloys to the entire world. Choose Xunshi, choose high performance.