Our products conform to GB, AISI, ASTM, DIN, EN, JIS standard for stainlesss steel coil, sheet and plate.
UNS S32550, W.Nr. 1.4507, F61
UNS S32550 is a highly alloyed, super duplex (ferrite-austenite) solid solution trengthened alloy, which provides high strength and wear resistance while offering superior corrosion resistance compared to 316 stainless steel. Also, the material offers good ductility with a high fatigue strength, twice the yield strength of alloy 20, and stronger than duplex 2205. It is important to note that carbides, nitrides and sigma phase can formed if UNS S32550 stainless steel is allowed to soak between the temperatures of 1000°F and 1800°F.
|
Material |
Cr |
P |
S |
Ni |
Si |
C |
Mn |
Mo |
|
S32550 |
24.0-27.0 |
0.04 max |
0.03 max |
4.50-6.50 |
1.00 max |
0.04 max |
1.50 max |
2.90-3.90 |
|
Material |
Tensile strength |
Yield strength 0,2 |
Elongation |
Hardness HB30 |
|
S32550 |
750N/mm² |
550N/mm² |
25% |
290HB |
Pollution Control: Scrubbers, precipitators, fans and pumps
Oil and Gas: Pumps, valves, wellheads and subsea equipment
Desalination Plants: Pumps, valves, and heat exchangers
Chemical and Petrochemical: Pressure vessels, heat exchangers, and storage tanks
Food Processing: Storage tanks, pipelines, and processing machinery
Pulp and Paper: Digester blow vales, feed valves, washers, black liquor heater tubes, bleaching components
Marine: Propellers, shafts, rudders, seals, pumps, valves
Construction and Architecture: Bridges, building facades, and infrastructure
In most media, UNS S32550 display excellent corrosion resistance, including pitting and crevice corrosion resistance. Its also has high resistance to intergranular corrosion and high strength it performs well in abrasion/corrosion conditions. In addtion, UNS S32550 stainless steel performs well in sulphuric, phosphoric, and nitric and shows excellent resistance to organic acids such as acetic and formic acid.
Although machinable, the high strengths of UNS S32550 stainless steel makes machining difficult. Compared to 304, machining of UNS S32550 is around 20% slower. During machining, cutting edges must be kept sharp, dull edges cause excess work hardening. Cuts should be light but deep enough to prevent work hardening by riding on the surface of the material. Chip breakers should be employed to assist in ensuring swarf remains clear of the work. Also, low thermal conductivity of super duplex S32550 stianless steel results in heat concentrating at the cutting edges, this means coolants and lubricants are necessary and must be used in large quantities.
UNS S32550 duplex stainless steel has good weldability and all standard welding processes can be used. They are not quite as easily welded as the austenitic grades but low thermal expansion in duplex grades reduces distortion and residual stresses after welding.
Ø Bar & Rod
Ø Plate & Sheet
Ø Coil & Strip
Ø Pipe & Tube
Ø Fitting: Flange, Tee, Elbow, Reducer etc.
Ø Forging: Ring, Shaft, Circle, Block etc.
Ronsco is a supplier with more than 27 years of experience in the stainless steel and nickel alloy field, we always adheres to the business phiosophy of "customer-centered", tries its best to meet the requirements of customers and pursues win-win cooperation with customers. Are you looking for metal products one-stop supplier! Contact Us Now! Email: service@ronsteel.com
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