MATERIAL DESCRIPTION

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

Super Duplex UNS S32750 is the most common super duplex grade in the market. UNS S32750 is a duplex especially designed for service in aggressive chloride-containing environments. It has very good resistance to localized corrosion and stress corrosion cracking in combination with high mechanical strength. It is widely used in oil & gas, hydropower, pressure vessels, pulp & paper, structural components and chemical tankers.

Applications

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

UNS S32750 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.

Heat Treatment
Solution annealing in the range of 1100°C followed by water quenching.

Weldability
Very good.

Chemical Composition (Specific for Bars)

Weight % C Mn P S Si Cr Ni Mo  Cu  N  PRE
Min.            24,0  6,00  3,00    0,24  41
Max.  0,030  1,20  0,025  0,010 0,80  26,0  8,00  4,50  0,50  0,32  

PREN = % Cr + 3.3 % Mo + 16 % N ≥ 41

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
 16 mm  1.7
 20 mm  2.5
 25 mm  3.9
 30 mm  5.7
 35 mm  7.7
 40 mm  10.1
 45 mm  12.8
 50 mm  15.8
 60 mm  22.6
 70 mm  30.8
 80 mm  40.2
 90 mm  50.9
 100 mm  62.9
 110 mm  76.1
 120 mm  90.5
 125 mm  96
 DIA  KG/M
 130 mm  106
 140 mm  123
 150 mm  141
 160 mm  161
 170 mm  182
 180 mm  204
 200 mm  251
 225 mm  319
 250 mm  385
 280 mm  494
 300 mm  566
 330 mm  686
 350 mm  780
 380 mm  910
 406,4 mm  1040

Plate Stock

MEASUREMENTS  KG/PLATE
 2 X 1500 X 3000 mm  72
 3 X 1500 X 3000 mm  108
 3 X 1500 X 6000 mm  216
 3 X 2000 X 6000 mm  288
 4 X 1500 X 3000 mm  144
 4 X 1500 X 6000 mm  288
 4 X 2000 X 6000 mm  384
 5 X 1500 X 3000 mm  180
 5 X 1500 X 6000 mm  360
 5 X 2000 X 6000 mm  480
 6 X 1500 X 3000 mm  216
 6 X 1500 X 6000 mm  432
 6 X 2000 X 6000 mm  576
 8 X 1500 X 3000 mm  297
 8 X 1500 X 6000 mm  594
 8 X 2000 X 6000 mm  791
 10 X 1500 X 3000 mm  371
 10 X 1500 X 6000 mm  742
 10 X 2000 X 6000 mm  989
 12 X 1500 X 3000 mm  445
 MEASUREMENTS  KG/PLATE
 12 X 1500 X 6000 mm  890
 12 X 2000 X 6000 mm  1187
 15 X 1500 X 3000 mm  557
 15 X 1500 X 6000 mm  1113
 15 X 2000 X 6000 mm  1484
 16 X 1500 X 3000 mm  593
 16 X 1500 X 6000 mm  1186
 16 X 2000 X 6000 mm  1582
 20 X 1500 X 3000 mm  742
 20 X 1500 X 6000 mm  1484
 20 X 2000 X 6000 mm  1978
 25 X 1500 X 3000 mm  927
 25 X 1500 X 6000 mm  1854
 25 X 2000 X 6000 mm  2472
 30 X 1500 X 3000 mm  1113
 30 X 1500 X 6000 mm  2225
 30 X 2000 X 6000 mm  2966
 35 X 1500 X 3000 mm  1297
 35 X 1500 X 6000 mm  2595
 35 X 2000 X 6000 mm  3460
 40 X 1500 X 3000 mm  1484
 40 X 1500 X 6000 mm  2966
 40 X 2000 X 6000 mm  3956
 50 X 1500 X 3000 mm  1854
 50 X 1500 X 6000 mm  3708
 60 X 1500 X 3000 mm  2224
 60 X 1500 X 6000 mm  4449

Coil Stock

1300 MM 1500 MM 2000 MM
0,4 mm 1,5 mm 3 mm
0,5 mm 3 mm 4 mm
0,7 mm 4 mm 5 mm
1 mm 5 mm 6 mm
  6 mm  

Product Sheet

View stock list

Material Weight Calculator

Hardness conversion

PREN Calculator

ksi / MPa converter

Equivalent standards

  • EN 1.4410
  • UNS S32750
  • Grade F53
  • (SAF 2507)
Tags: Coil / Plate / Round Bar & Bored Bar