Super Duplex Ferralium 255

in stock

 

We are the Super Duplex 255 / Ferralium 255-SD50 Stainless Steel Supplier Malaysia.

With the strong global sourcing in Duplex Stainless Steel, our sales and supplier network including : Australia, Pakistan,  Malaysia, Singapore, Taiwan, China, Vietnam, Belgium, Japan, South Korea, Philippines, France, United Kingdom, Indonesia, Thailand, Hong Kong, China, Sweden, United States, Dubai, Finland, Brunei, Germany.

 

Leading Supplier of Ferralium Alloy 255 

  •  Super Duplex 255 | Ferralium 255 – SD50 | Super Duplex 1.4507 | UNS S32550 | Alloy 255  

*Due to different country, it has different name for the UNS S32550 Ferralium 255 Stainless Steel. 

 

Properties of Ferralium 255 

Ferralium® 255 – SD50 (super duplex 255) is a super duplex stainless steel supplied in the hot worked and annealed condition. It achieves higher strengths than most stainless steels and alternative corrosion resistant alloys, offering the potential to reduce section size and therefore weight and cost.

As a 25% Cr alloy, with significant additions of copper, Ferralium® 255 offers excellent corrosion resistance in a wide variety of corrosive chemicals including sulphuric, nitric and phosphoric acid.

In seawater and other chloride containing environments it also provides outstanding resistance to pitting and crevice corrosion, with Critical Pitting Temperature exceeding 50°C. Excellent ductility and impact strength at both ambient and sub-zero temperatures combine with a high resistance to abrasion, erosion and cavitation erosion.

Listed in NACE MR 01 75 for sour service and having gained ASME Approval for Pressure Vessel applications, Ferralium® 255-SD50 is tested to the highest degree using tests designed to guarantee that the trade-marked product possesses high integrity, a correct phase balance and the absence of sigma and other deleterious phases.

 

Properties of Super Duplex 255 : 

  • Ferralium 255 UNS S32550 pioneered the addition of nitrogen, to create the first super duplex stainless steel
  • Continuously developed through 1990’s to extend PREN > 40, and more recently to increase mechanical properties
  • First super duplex stainless steel to achieve 586N/mm2 as a minimum 0.2% Proof Stress, up to 12” (300mm) section sizes
  • Pitting Resistance Equivalent (PREN) >40, indicating outstanding resistance to pitting and crevice corrosion
  • Very low levels of sulphur minimise the likelihood of inclusions as sites for potential pitting corrosion
  • Higher copper content provides self-healing effect at sites of pitting to inhibit further growth
  • Available as bars, plate, pipe and fittings with complementary weld wire
  • Particularly suitable for larger components as the formation of sigma phase is much less likely than it is for other Super Duplex grades

 

Chemical Composition in Super Duplex 1.4507 (%) 

MinMax
Cr24.5026.50
Ni5.506.50
Mo3.103.80
Co
Nb (+Ta)
Ti
V
W
Cu1.502.00
C0.025
Mn0.801.20
N0.200.25
Si0.70
P0.025
S0.005
FeBalance
Al

* Table 1 : Chemical Composition for Super Duplex 1.4507 (Ferralium 255) 

 

Mechanical Properties for Alloy 255 : 

Ultimate TensileYield Strength (0.2% OS)Elongation R/AHardness Brinell
Min110 KSI80 KSI15%
Max 297
Min760 MPa550 MPa
Max

* Table 2 : Mechanical Properties for Alloy 255 (Ferralium 255) 

 

Physical Properties for Ferralium 255-SD50 : 

Density (Kg/m3)7810
Magnetic Permeability (20°C)33
Young’s Modulus (kN/mm2)199
Specific Electrical Resistance, 20°C (Ω-m)0.80 x 10^-6
Mean coefficient of thermal expansion, 20-100°C (m/m/degC)11.1 x 10^-6
Specific Heat, 20°C (J/kg.K)475
Thermal conductivity, 20°C (W/m.K)14.2
Fracture Toughness, KQ (MPa/m2)98

* Table 3 : Physical Properties for UNS S32550 Ferralium 255 

 

Applications for Ferralium Alloy 255 : 

  • Oil & Gas industry pumps, valves, wellhead and subsea equipment
  • Pollution control scrubbers, precipitators, fans and pumps
  • Marine propellers, shafts, rudders, seals, pumps, valves
  • Bolts and fasteners
  • Process industry equipment in sulphuric acid, nitric acid, phosphoric acid, PP / PVC/TiOx production, agrochemicals
  • Grain and vegetable processing plant, sugar cane centrifuges
  • Pulp and paper digester blow vales, feed valves, washers, black liquor heater tubes, bleaching components
    • Copper smelting fans, tuyere bars, wet scrubbers, leaching area precipitators
  • Water and sewage treatment, desalination, swimming pools

 

Our Sales and Supplier Network in Alloy 1.4507 / S32550 / Alloy 255 Ferralium 255 : 

With over 15 years of experience and strong global sourcing networking in the market, we are proud to be the Super Duplex 255 / Ferralium 255-SD50 Stainless Steel Supplier and Exporter to :

  • Australia, Pakistan,  Malaysia, Singapore, Taiwan, China, Vietnam, Belgium, Japan, South Korea, Philippines, France, United Kingdom, Indonesia, Thailand, Hong Kong, China, Sweden, United States, Dubai, Finland, Brunei, Germany.

Besides, we have the full range of Stainless Steel sheets, Stainless Steel Round Bar, Stainless Steel Rods, Stainless Steel Plate which consists of 

300 Series Stainless Steel : SUS304, SUS304L, SUS309, SUS310, SUS316Ti, SUS317, SUS321, SUS347

400 Series Stainless Steel  : SUS403, SUS410, SUS420, SUS431, SUS440C, SUS630, SUS904L 

Nitronic 30, Nitronic 50, Nitronic 60

– Super Duplex S32750, S32760 

253MA 

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