EN 1.4501 / SUPER DUPLEX UNS S32760 / F55

• Applications

  The main applications are for details with special requirements for high corrosion resistance.

  It is widely used in oil & gas, hydropower, pressure vessels, pulp & paper, structural components and chemical tankers.

  Oil & Gas Industry

  • • Subsea pipelines, manifolds, and risers
    • Offshore platforms and topside equipment
    • Heat exchangers, separators, and pressure vessels in highly aggressive environments

  Chemical & Petrochemical

  • • Reactors and columns for strong acids and chlorides
    • Storage tanks for harsh chemicals
    • Piping systems in severe chemical processes

  Marine & Shipbuilding

  • • Seawater cooling systems and pumps
    • Ballast water systems
    • Propeller shafts and rudder stocks

  Desalination & Water Treatment

  • • High-pressure reverse osmosis systems
    • Evaporators and brine heaters
    • Piping and pumps for seawater intake and discharge

  Pulp & Paper Industry

  • • Bleaching equipment and digesters exposed to chlorides
    • Evaporators and heat recovery systems

  Renewable Energy

  • • Offshore wind farm components
    • Structural parts exposed to seawater and harsh weather

• Heat Treatment & Weldability

  Heat Treatment – Solution annealing in the range of 1120°C followed by water quenching.

  Weldability – Very good.

• Chemical Composition (Specific for Bars)

  Weight %	C	Mn	P	S	Si	Cr	Ni	Mo	N	Cu	W	PREN
  Min.						24,0	6,00	3,00	0,20	0,50	0,50	40
  Max.	0,030	1,00	0,025	0,010	1,00	26,0	8,00	4,50	0,30	1,00	1,00

  PREN = % Cr+3.3 % Mo+16 % N ≥ 40

• Reference Standards

  Reference Standards

  General:

  • Norsok M-650 Ed.4 qualified manufacturers
  • PED 2014/68/EU Annex I section 4.3
  • AD2000 W0 (W2/W10)
  • NACE MR0175/ISO 15156-3 and NACE MR0103/ ISO 17945

  Plate, sheet and coil:

  • ASTM A240, EN 10028-7, EN 10088-2, EN 10088-4, Norsok M-630 MDS D55

  Bar and forging:

  • ASTM A276, ASTM A479, ASTM A182, EN 10088-3, Norsok M-630 MDS D54/ D57

  Other products:

  • As per applicable ASTM and/or EN standards and Norsok M-630 MDS

• Mechanical Properties (Typical)

  	Yield strength Rp0.2, MPa	Tensile strength Rm, MPa	Elongation [%]	Hardness [HB]	Impact, Charpy-V, -46ºC [J]
  BAR	≥ 550	≥ 750	≥ 25	≤ 300	≥ 65
  PLATE CR (COIL)	≥ 550	750 – 1000	≥ 25	≤ 310	≥ 45
  PLATE HR (COIL)	≥ 550	750 – 1000	≥ 25	≤ 310	≥ 45
  PLATE (QUARTO)	≥ 550	750 – 930	≥ 25	≤ 310	≥ 45

   

Stocked Products and Dimensions

• 

  Round Bar

  DIA	KG/M
  12,7 mm	1,1
  15,87 mm	1,5
  19,05 mm	2,3
  25,4 mm	4,2
  31,75 mm	6,2
  38,1 mm	9,2
  44,5 mm	12,7
  50,8 mm	16,2
  60 mm	22,6
  70 mm	30,8
  76,2 mm	36,6
  80 mm	40,2
  90 mm	50,9
  101,6 mm	64,7
  120 mm	90,5
  127 mm	104,7
  130 mm	106,

  DIA	KG/M
  140 mm	123
  152 mm	147
  160 mm	162
  170 mm	182
  180 mm	204
  203,2 mm	258
  220 mm	304
  230 mm	333
  240 mm	362
  254 mm	402
  280 mm	493
  300 mm	566
  304,8 mm	579
  330 mm	686
  355,6 mm	797
  380 mm	910
  406,4 mm	1040