Duplex 2205 (UNS S31803, S32205, 1.4462) is a stainless steel containing two-phase, ferritic, austenitic 22% chromium, 3% molybdenum, 5 to 6% nickel. Duplex 2205 (UNS S31803, S32205, 1.4462) is the most widely used duplex stainless steel grade and has twice as high yield strength as the standard austenitic stainless steel grades.

Duplex 2205 (UNS S31803, S32205, 1.4462) is the most common of several different duplex stainless steels. Dublex 2205 (UNS S31803, S32205, 1.4462) has a much higher corrosion resistance than most other stainless steels (such as AISI 316, AISI 317).

Similarly, the mechanical properties and strength of the Dublex 2205 (UNS S31803, S32205, 1.4462) stainless are also higher. Corrosion resistance of ordinary stainless steels and Dublex 2205 (UNS S31803, S32205, 1.4462) is used where the strength is not sufficient.

Duplex 2205 (UNS S31803, S32205, 1.4462)

• Due to its high chromium, molybdenum and nitrogen content, the Duplex 2205 exhibits superior corrosion resistance in most environments than 316 and 316L.
• Resistant to oxidation due to chromium, molybdenum and nitrogen content.
• Resistant to chlorine-induced corrosion cracking.
• Performs well in environments with ferrite.

Dublex 2205 (UNS S31803, S32205, 1.4462) Fields of application

• Chemical industry
• Fertilizer industry
• Oil and gas industry
• Food industry

General characteristics of Dublex 2205 (UNS S31803, S32205, 1.4462)

• High resistance to stress corrosion cracking in chloride bearing environments
• High resistance to stress corrosion cracking in hydrogen sulphide-containing media
• High resistance to general corrosion
• High resistance to wear corrosion
• High mechanical properties – roughly two times the ability of austenitic stainless steels
• Physical properties with design advantages
• Good weldability

Dublex 2205 (UNS S31803, S32205, 1.4462) Chemical composition (%)

• Carbon: 0,030
• Silicon: 1
• Manganese: 2
• Phosphorus: 0,030
• Sulfur: 0,015
• Chrome: 22
• Nickel: 5
• Molybdenum: 3.2
• Nitrogen: 0.18

Dublex 2205 (UNS S31803, S32205, 1.4462) Standard and norms

• UNS: S31803, S32205
• Material number: 1.4462
• X2CrNiMoN 22-5-3
• SS: 2377
• AFNOR: Z2.CND22.05.03
• Duplex 2205 (UNS S31803, S32205, 1.4462) pipe: EN 10216-5, NFA 49-217, ASTM A789
• Duplex 2205 (UNS S31803, S32205, 1.4462) plate: ASTM A240, EN 10088-2
• Duplex 2205 (UNS S31803, S32205, 1.4462) sheet metal: ASTM A240, EN 10088-2
• Rod Duplex 2205 (UNS S31803, S32205, 1.4462): ASTM A276, A479, EN 10088-3
• Spindle 2205 (UNS S31803, S32205, 1.4462) Shaft: ASTM A276, A479, EN 10088-3
• Duplex 2205 (UNS S31803, S32205, 1.4462) Wire
• Welding wire of duplex 2205 (UNS S31803, S32205, 1.4462)
• Duplex 2205 (UNS S31803, S32205, 1.4462) flange: ASTM A182
• Duplex 2205 (UNS S31803, S32205, 1.4462) fittings: ASTM A182; A815
• Forging: Dublex 2205 (UNS S31803, S32205, 1.4462): ASTM A276, A479, EN 10088-3

Duplex 2205 (UNS S31803, S32205, 1.4462) shapes supplied

• Duplex 2205 (UNS S31803, S32205, 1.4462) bar
• Duplex 2205 (UNS S31803, S32205, 1.4462) plate
• Duplex 2205 (UNS S31803, S32205, 1.4462) sheet
• Duplex 2205 (UNS S31803, S32205, 1.4462) rod
• Duplex 2205 (UNS S31803, S32205, 1.4462) bar
• Duplex 2205 (UNS S31803, S32205, 1.4462) wire
• Duplex 2205 (UNS S31803, S32205, 1.4462) welding wire