We are stockists of 31803 duplex alloys in sheet, plate, and bar directly distributed globally from our UK stockholding warehouse, combined with our large capacity cutting capabilities we can meet requirements for many industries.
The following are the properties of 31803:
Stainless ferritic-austenitic Cr-Ni-Mo steel with nitrogen addition.
High corrosion resistance, especially against stress corrosion cracking in solutions containing chloride.
Good strength properties.
Resistant to intergranular corrosion in the temperature range up to 300°C.
Heat treatment subsequent to welding not necessary.
Surface condition for optimum corrosion resistance: pickled, heat treated free from scale or machined.
|Size||1/2 inch, 3/4 inch, 1 inch|
|Application||Structure Pipe, Hydraulic Pipe|
Duplex S31803 Fittings offered finds application in different industry sectors including in the chemical industry, paper industry, seawater desalination plants, oil and gas production and others. These quality assured and high performance fittings are directly distributed to global customers from our UK stock holding warehouse. As leading and well recognized stockiest, these fittings also come with good strength properties as well as corrosion resistance. We can offer these in both standard and customized finish specifications.
EN / DIN
Hot Forming –
1200 to 950°C / Air cooling
Heat Treatment –
1020 to 1100°C Water , air (thickness below 2mm)
Ferrite + Austenite
Condition: solution annealed –
0.2% proof stress
650 – 880
25 - – - -
100 - – - -
640 – 840
252) 252) - -
90 60 - -
St = Bar
Bl = Sheet or plate
L = Longitudinal, Q = Transverse, T = Tangential
1) For sheet or plate < 3mm = A80mm specimen
2) The values for other products and dimensions shall be established by agreement.