2205 / URANUS 45N, S31803, F51, S32205 DUPLEX (AUSTENITIC-FERRITIC) Cr-Ni-Mo-N STAINLESS STEEL

Description

Alloy 2205 is a second-generation, nitrogen-alloyed duplex stainless steel (ferritic-austenitic). It offers an excellent combination of both strength and corrosion resistance over a wide range of applications. The approximate 50/50 ferrite-austenite structure provides excellent chloride pitting and stress corrosion cracking resistance, with roughly twice the yield strength of the standard austenitic stainless grades.

The high chromium and molybdenum content, coupled with the nitrogen addition in 2205, provides general corrosion, pitting, and crevice corrosion resistance superior to 316L and 317L.

2205 demonstrates superior erosion-corrosion resistance when compared to 316 stainless steel. It is not subject to intergranular corrosion in the as-welded condition. 2205 may be successfully machined by conventional methods.

The (UNS S32205) grade is a restricted-chemistry version which maintains chromium, molybdenum and nitrogen at higher levels than t

Applications

Pulp and paper industry, Desalination plants, Flue-gas cleaning, Cargo tanks and pipe systems in chemical tankers, Seawater systems, Firewalls and blast walls on offshore platforms, Bridges, Components for structural design, Storage tanks, Pressure vessels, Heat exchangers, Water heaters, Rotors, impellers and shafts

Specifications

USN# S31803 2205 / URANUS 45N, F51 DUPLEX (AUSTENITIC-FERRITIC) Cr-Ni-Mo-N STAINLESS STEEL
UNS# S32205 2205 HIGH IN DUPLEX (AUSTENITIC-FERRITIC) Cr-Ni-Mo-N STAINLESS STEEL

ASTM A-182 (F51) FORGED & ROLLED PIPE FLANGES,FITTINGS,& VALVES & PARTS FOR HIGH TEMP
ASTM A-240 PLATE, SHEET & STRIP FOR PRESSURE VESSELS
ASTM A-276 BARS & SHAPES
ASTM A-479 BARS & SHAPES FOR BOILERS & PRESSURE VESSELS
ASTM A-480 FLAT-ROLLED PLATE, SHEET & STRIP
ASTM A-789 SEAMLESS & WELDED TUBING FOR GENERAL SERVICE
ASTM A-790 SEAMLESS & WELDED PIPE
ASTM A-815 WROUGHT PIPING FITTINGS
ASTM A-928 ELECTRIC FUSION WELDED W/ ADDITIONAL FILLER METALS

Available Forms

  • Angles
  • Bar
  • Forge
  • Hex Bar
  • Pipe
  • Plate
  • Sheet
  • Tubes
  • Wire