Duplex 2205 & Super Duplex 32750 Valves & Fitting

Empex Stainless is a manufacturer of Duplex 2205 and Super Duplex 32750 Valves & Fittings, including Super Duplex Compression Tube Fittings and Pipe Fittings.

Duplex stainless steels are increasingly being used across industries and are now offered by major stainless steel mills worldwide. Their growing popularity is driven by several advantages:

• Higher strength, resulting in weight savings

• Greater corrosion resistance, particularly against stress corrosion cracking

• Better price stability

• Lower overall lifecycle cost

Properties

The balanced composition of chromium, molybdenum, and nitrogen gives Duplex 2205 excellent resistance to chloride pitting and crevice corrosion. This makes it highly suitable for demanding services such as marine environments, brackish water systems, bleaching operations, closed-loop water systems, and certain food processing applications.

The elevated chromium, molybdenum, and nitrogen content in 2205 provides corrosion resistance superior to common austenitic stainless steels like 316L and 317L in many aggressive environments.

Advantages

Duplex and Super Duplex Valves & Fittings combine the best characteristics of both ferritic and austenitic stainless steels. They offer the high strength and stress corrosion cracking resistance of ferritic alloys along with the excellent fabrication properties and corrosion resistance of austenitic alloys.

Duplex 2205 is a cost-effective solution for applications where 300 series stainless steels are prone to chloride stress corrosion cracking. Stress corrosion cracking typically occurs when stainless steel is exposed to tensile stress in chloride-containing environments, especially at elevated temperatures. Duplex grades significantly reduce this risk, ensuring enhanced reliability and longer service life in critical applications.