EN 1.4501 / SUPER DUPLEX UNS S32760 / F55

• Applications

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

  EN 1.4501 / Super Duplex UNS S32760 / F55 is characterized by:

  • High resistance to stress corrosion cracking in halide containing environments.
  • High resistance to pitting and crevice corrosion.
  • High resistance to general corrosion.
  • High mechanical strength.
  • High resistance to erosion corrosion and corrosion fatigue.

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

• 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