Our stock of Super Duplex 32760 can be supplied in sheet, plate, or bar forms, cut to specific requirements and comes with the Keshariya Metal quality certification.

The following are the properties of S32760 Super Duplex:

  • Ferritic-austenitic stainless steel.
  • Excellent corrosion resistance against general corrosion, stress corrosion cracking, corrosion fatigue, pitting, crevice and erosion corrosion and possessing very high mechanical strength properties.
  • Good weldability, post weld heat treatment not necessary.
  • Max. Temperature for long periods of service: 280°C (536°F) / (300°C/572°F possible for short periods).
  • Surface condition for optimum corrosion resistance: pickled or machined.
Inconel-601[1]

Application

Components in offshore, waste water, sea water desalination and chemical plants with aggressive chloride-containing media e.g. heat exchangers, separator parts, compressor and pump components, turbine blades.

Technical Info

Chemical Composition (average %)

CSiMnCrMoNiWCuNPREN
0.0200.250.5525.203.707.000.650.600.22Min. 40

Standards

UNS S32760

Hot Forming

Forging

1280 to 1000°C (2336-1832°F)
Air cooling

Heat Treatment

Quenching:

1100°C (2012°F)
Water , air (thickness below 2mm)

Structure as quenched:

1100°C (2012°F)
Water , air (thickness below 2mm)

Structure as quenched:

Ferrite + Austenite

Welding

Weldability of super duplex 32760 is good. The welding procedures are similar to those applied for conventional duplex grades. Welding consumables for different welding methods are available.

Machining

The machine ability of super duplex 32760 is superior to comparable super duplex grades due to its optimised inclusion characteristic. Further details are available on request.

Mechanical Properties

Condition: quenched

ProductDimension
Size
mm
0.2% proof stress
N/mm2
min.
Tensile strength
N/mm2
min.
Elongation A5
% min.
L    Q     T
Impact strength
(ISO-V)
J min.
L    Q     T
St, Sch≤25055075025   - –    - -70   - –    - -
Bl≤ 75- –   251)  - -- -   55    - -

St = Bar , Sch = Forging,
Bl = Sheet or plate
L = Longitudinal, Q = Transverse, T = Tangential
1) < 3mm = A80mm specimen
The values for other products and dimensions shall be established by agreement.

Hight Temperature Properties

Condition: quenched

0.2% yield strength
N/mm² min.
Temperature
50°C (122°F)100°C (212°F)150°C (302°F)200°C (392°F)250°C (482°F)300°C (572°F)
510480445405400395

Physical Properties

Physical Properties

Thermal conductivity at …………….. 20°C (68°F) …………..15.0 …………W/(m.K)
Specific heat at ………………………..20°C (68°F) …………..450 ………….J/(kg.K)
Electrical resistivity at ………………. 20°C (68°F) …………..0.80 …..Ohm.mm2/m
Modulus of elasticity at …………….. 20°C (68°F) …………..250 x 103 …N/mm2
Magnetic properties …………………………………………………magnetic

20°C und …°C, 10-6 m/(m.K) bei
Thermal expansion between
20°C (68°F) and …°C (°), 10-6 m/(m.K) at
Temperature10-6 m/(m.K)
˚C˚F
100°C212°F13.3
200°C392°F13.6
300°C572°F14.0
400°C752°F170
Modulus of elasticity, 103 N/mm2 atTemperature103 N/mm2
˚C˚F
20°C66°F205
100°C212°F200
200°C392°F195
300°C572°F180
400°C752°F170

As regards applications and processing steps that are not expressly mentioned in this product description/data sheet, the customer shall in each individual case be required to consult us.