MATERIAL DESCRIPTION

All our super-duplex materials are produced by Norsok M-650 Ed.4 and/ or ISO 17782 qualified manufacturers.

Super Duplex UNS S32760 is among the most common super duplex grade in the market. UNS S32760 is a duplex especially designed for service in aggressive chloride-containing environments and has additions of W and Cu compared to UNS S32750. It has very good resistance to localized corrosion and stress corrosion cracking in combination with high mechanical strength.

Applications

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

UNS S32760 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
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

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

Round Bar Stock

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

View stock list

Material Weight Calculator

Hardness conversion

PREN Calculator

ksi / MPa converter

Equivalent Standards

  • EN 1.4501
  • UNS S32760
  • Grade F55
  • (Zeron 100)
Tags: Plate / Round Bar & Bored Bar