Here's a professional English product introduction for UNS N08020 (Alloy 20/20Cb-3):

‌UNS N08020‌ is a nickel-iron-chromium austenitic alloy renowned for its exceptional corrosion resistance in severe chemical environments. Developed initially for sulfuric acid service, this alloy combines 32-38% nickel with 19-21% chromium and 3-4% copper for enhanced performance.

‌Key Features:‌

• Outstanding resistance to sulfuric, phosphoric, and nitric acids
• Excellent chloride stress corrosion cracking resistance
• Good mechanical properties with 690 MPa tensile strength
• Maintains corrosion resistance in both oxidizing and reducing media

‌Primary Applications:‌
• Chemical Processing: Reactors, heat exchangers, and piping systems for acid handling
• Petrochemical: Equipment for oil refining and synthetic rubber production

• Marine Engineering: Seawater desalination plants and offshore platforms
• Pharmaceutical: Drug manufacturing equipment requiring GMP compliance

• Food Industry: Processing equipment for corrosive food products

The material is available in multiple forms including plates, tubes, and bars, complying with standards such as ASTM B463. Its balanced composition makes UNS N08020 particularly suitable for aggressive industrial applications where conventional stainless steels fail.