2205 Duplex Stainless Steel & Duplex 2507 Suppliers

DUPLEX 2205

ASTM A 182, A 240, A 276, 
A 789, A 790, A 815
UNS S31803, S32205
NACE MR0175

Forms of Duplex 2205 Available at Reliant Pipes

• Sheet
• Plate
• Bar
• Pipe & Tube (welded & seamless)
• Fittings (i.e. flanges, slip-ons, blinds, weld-necks, lapjoints, long welding necks, socket welds, elbows, tees, stub-ends, returns, caps, crosses, reducers, and pipe nipples)
• Welding Wire and Welding Electrode

2205 is a duplex stainless steel, with a chemical composition of nearly equal proportions of austenite and ferrite.  This combination allows the alloy to be stronger and tougher than standard austenitic steels. Duplex stainless steels like 2205 also maintain good weldability in their thickest sections, and they are much more resistant to stress corrosion cracking than standard austenitic steels.  

Standard Industry Specifications

• UNS S32205
• ASTM A 240
• ASME SA 240
• W.NR. 1.4462

Common Applications of 2205 Duplex Stainless Steel

• Chemical Processing, Storage and Transport
• Pulp and Paper Industry
• Mining Industry
• Marine Applications
• Oil and Gas Extraction and Processing
• Heat Exchangers

What are the characteristics of Duplex 2205?

• High resistance to chloride stress corrosion cracking
• Resistance to chloride pitting and crevice corrosion
• Good general corrosion resistance
• Good sulfide stress corrosion resistance
• High Strength
• Good weldability and workability

In what applications is Duplex 2205 used?

• Chemical process vessels, piping and heat exchangers
• Pulp mill digesters, bleach washers, chip pre-steaming vessels
• Food processing equipment
• Oil field piping and heat exchangers
• Flue gas desulfurization equipment

ASTM Specifications

Pipe Smls	Pipe Welded	Tube Smls	Tube Welded	Sheet/Plate	Bar	Flanges, Fittings & Valves
A790	A790	A789	A789	A240	A276	A182

Mechanical Properties
Specified Tensile Properties ASTM A240

Ultimate Tensile Strength, ksi Minimum	.2% Yield Strength, ksi Minimum	Hardness Max.
95	65	31 Rockwell C

SUPER DUPLEX 2507

UNS S32750

Forms of Super Duplex 2507 Available

• Sheet
• Plate
• Bar
• Pipe & Tube (welded & seamless)
• Fittings (i.e. flanges, slip-ons, blinds, weld-necks, lapjoints, long welding necks, socket welds, elbows, tees, stub-ends, returns, caps, crosses, reducers, and pipe nipples)

What are the characteristics of Duplex 2507?

• High resistance to chloride stress corrosion cracking
• High Strength
• Superior resistance to chloride pitting and crevice corrosion
• Good general corrosion resistance
• Suggested for applications up to 600° F
• Low rate of thermal expansion
• Combination of properties given by austenitic and ferritic structure
• Good weldability and workability

In what applications is Duplex 2507 used?

• Desalination Equipment
• Chemical process pressure vessels, piping and heat exchangers
• Marine Applications
• Flue Gas Scrubbing Equipment
• Pulp & Paper Mill Equipment
• Offshore Oil production/technology
• Oil and gas industry equipment

ASTM Specifications

Pipe Smls	Pipe Welded	Tube Smls	Tube Welded	Sheet/Plate	Bar	Flanges & Fittings
A790	A790	A789	A789	A240	A276	A182

Mechanical Properties
Specified Tensile Properties, Plate ASTM A240

Ultimate Tensile Strength, ksi Minimum	.2% Yield Strength, ksi Minimum	% Elongation Min.
116	80	15	310