Duplex stainless steel
Duplex stainless steel offers excellent resistant to corrosion and very high mechanical strengtd. tde high corrosion resistance of duplex stainless steel ensures significantly more uptime tdan carbon steels and conventional stainless steels, while tde mechanical strengtd allows for lighter constructions, more compact system design and less welding.
Common duplex steel specification
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316T DESIGNATIONS
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CHEMICAL COMPOSITION ASTM/EN STANDARDS (Major elements only)
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Welding
consumables
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% content is a maximum unless a range is indicated
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ASTM
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EN
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Trade Name
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C
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Mn
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Cr
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Ni
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Mo
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N
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Otder
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Duplex
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2304
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0.03
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21.5/24.5
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3.0/5.5
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0.1/0.6
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0.05/0.2
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0.05/0.6 Cu
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2304/2205
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1.4362
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0.03
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22.0/24.0
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3.5/5.5
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0.1/0.6
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0.05/0.2
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0.1/0.6 Cu
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2101
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1.4162
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0.04
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4.0
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21.0
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1.35
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0.1
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0.2
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2205
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0.03
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22.0/23.0
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4.5/6.5
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3.0/3.5
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0.14/0.2
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2205
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1.4462
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O.03
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21.0/23.0
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4.5/6.5
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2.5/3.5
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0.10/0.22
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2507
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0.03
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24.0/26.0
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6.0/8.0
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3.0/5.0
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0.24/0.35
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1.5/2.5 Cu
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2507
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1.441
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0.03
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24.0/26.0
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6.0/8.0
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3.0/4.5
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0.2/0.35
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1.0/2.5 Cu
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Type of Stainless Steel Pipe Fittings
Duplex and super duplex pipe, fittings and flanges
MSAP Forge and Fittings can supply the following duplex stock grades:
Duplex UNS stock grades S31803, S32205, F51 and F60
Super duplex UNS stock grades S32750, S32760, F53 and F55
Stock materials are produced, certified and tested to comply with almost all international standards and specifications.
Duplex Stainless steel pipe fittings and flanges’ stock range
Duplex u/i 12in: all items are in stock from sch10s u/i XXS, pipe and corresponding fittings, flanges from 150lb – 2,500lb and API flanges to 10,000 psi.
Above 12in we have materials available up to 30in (762mm OD) in a limited thickness range.
Super duplex is available in a limited thickness range up to 18in.