Kanakratna Steelage Pvt. Ltd.
Kanakratna Steelage Pvt. Ltd.
Bhuleshwar, Mumbai, Maharashtra
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Super Duplex S32750

Super Duplex stainless like S32750, is a mixed microstructure of austenite and ferrite (50/50) which has improved strength over ferritic and austenitic steel grades. The main difference is that Super Duplex has a higher molybdenum and chromium content which gives the material greater corrosion resistance than standard duplex grades.

The balanced duel phase microstructure combines high strength with cost effective corrosion resistance particularly in high chloride environments. Super Duplex has the same benefits as its counterpart – it has lower alloying costs when compared with similar ferritic and austenitic grades with equipment corrosion resistance in chloride containing environments due to the material’s increased tensile and yield strength. In many cases this gives the purchaser the welcomed option of purchasing smaller thicknesses without the need to compromise on quality and performance.

Super Duplex UNS S32750 combines the most desirable characteristics of both ferritic and austenitic steels. It has excellent corrosion resistance to a wide variety of media, with outstanding resistance to pitting and crevice corrosion in seawater and other chloride containing environments due to its high chromium, molybdenum, and nitrogen level, with Critical Pitting Temperature exceeding 50°C.

The duplex microstructure gives this grade high strength UNS S32750 a low coefficient of thermal expansion and higher heat conductivity than austenitic steels and is suitable for working temperatures up to 300°C.

Listed in NACE MR 01 75 for sour service UNS S32750 and having gained ASME Approval for Pressure Vessel applications it can be used in a wide variety of applications.
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Super Duplex Pipe
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Super Duplex Pipe

Approx. Price: Rs 600 / KilogramGet Latest Price
Product Details:
Single Piece Length6 meter, 3 meter
ApplicationDrinking Water, Utilities Water
Unit Pipe Length9 meter, 6 meter, 3 meter
Size3/4 inch, 1/2 inch
We are engaged in providing our clients with high quality pipes and tubes which are made of Duplex & Super Duplex steel.

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

Technical Info:

Chemical Composition (average %)

CSiMnCrMoNiCuNPREN
0.020.250.5525.83.47max. 0.500.3Min. 40

Standards UNS: S32750
Hot Forming Forging: 1200 to 950°C / Air cooling
Heat Treatment Solution annealing: 1150 to 1000°C (2102-1832°F) Air cooling
Heat Treatment Solution annealing / quenching: 1100°C (2012°F) Water , air (thickness below 2mm)
Structure as quenched: Ferrite + Austenite
Welding: Weld ability of super duplex 32750 is good. The welding procedures are similar to those applied for conventional duplex grades. Welding consumables for different welding methods are available.

Mechanical Properties

Condition: solution annealed

ProductDimension Size mm0.2% proof stress N/mm2 min.Tensile strength N/mm2 min.Elongation A5 % min. L Q TImpact strength (ISO-V) J min. L Q T
St, Sch≤ 16050079525 - – - -100 - – - -
P≤ 75252) 252) - -100 60 - -

St = Bar ,
Sch = Forging,
P = 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.

High Temperature Properties

Condition: solution annealed/quenched

0.2% yield strength N/mm² min.Temperature
100°C (212°F)150°C (302°F)200°C (392°F)250°C (482°F)
450420400380

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Super Duplex Sheet
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Super Duplex Sheet

Approx. Price: Rs 600 / KilogramGet Latest Price
Product Details:
Minimum Order Quantity10 Kilogram
Thickness0-1 mm, 1-2 mm, 2-3 mm, 3-4 mm, 4-5 mm, >5 mm
Material GradeUNS NO-32750/32760/
We are proficiently engaged in offering Super Duplex Sheet.

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

Technical Info:

Chemical Composition (average %)

CSiMnCrMoNiCuNPREN
0.020.250.5525.83.47max. 0.500.3Min. 40

Standards UNS: S32750
Hot Forming Forging: 1200 to 950°C / Air cooling
Heat Treatment Solution annealing: 1150 to 1000°C (2102-1832°F) Air cooling
Heat Treatment Solution annealing / quenching: 1100°C (2012°F) Water , air (thickness below 2mm)
Structure as quenched: Ferrite + Austenite
Welding: Weldability of super duplex 32750 is good. The welding procedures are similar to those applied for conventional duplex grades. Welding consumables for different welding methods are available.

Mechanical Properties

Condition: solution annealed

ProductDimension Size mm0.2% proof stress N/mm2 min.Tensile strength N/mm2 min.Elongation A5 % min. L Q TImpact strength (ISO-V) J min. L Q T
St, Sch≤ 16050079525 - – - -100 - – - -
P≤ 75252) 252) - -100 60 - -

St = Bar ,
Sch = Forging,
P = 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.

High Temperature Properties

Condition: solution annealed/quenched

0.2% yield strength N/mm² min.Temperature
100°C (212°F)150°C (302°F)200°C (392°F)250°C (482°F)
450420400380

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Super Duplex Fittings
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Super Duplex Fittings

Approx. Price: Rs 600 / PieceGet Latest Price
We are a well-known Manufacturer, Supplier and Exporter of Super Duplex Fittings.

We are proficiently engaged in offering Super Duplex Sheet.

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

Technical Info:

Chemical Composition (average %)

CSiMnCrMoNiCuNPREN
0.020.250.5525.83.47max. 0.500.3Min. 40

Standards UNS: S32750
Hot Forming Forging: 1200 to 950°C / Air cooling
Heat Treatment Solution annealing: 1150 to 1000°C (2102-1832°F) Air cooling
Heat Treatment Solution annealing / quenching: 1100°C (2012°F) Water , air (thickness below 2mm)
Structure as quenched: Ferrite + Austenite
Welding: Weld ability of super duplex 32750 is good. The welding procedures are similar to those applied for conventional duplex grades. Welding consumables for different welding methods are available.

Mechanical Properties

Condition: solution annealed


ProductDimension Size mm0.2% proof stress N/mm2 min.Tensile strength N/mm2 min.Elongation A5 % min. L Q TImpact strength (ISO-V) J min. L Q T
St, Sch≤ 16050079525 - – - -100 - – - -
P≤ 75252) 252) - -100 60 - -

St = Bar ,
Sch = Forging,
P = 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.

High Temperature Properties

Condition: solution annealed/quenched

0.2% yield strength N/mm² min.Temperature
100°C (212°F)150°C (302°F)200°C (392°F)250°C (482°F)
450420400380

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Super Duplex Flanges
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Super Duplex Flanges

Approx. Price: Rs 2,500 / PieceGet Latest Price
Product Details:
Size10-20 inch, 20-30 inch, 5-10 inch
Material StandardASTM A105
BrandKanakratna Steelage
KanakRatna offer our clients with various Super Duplex flanges such as sorf, soff, solj, swrf, swff, wnrf, wnff, wnrtj, lwnrf, blrf, blff, threaded, spectacle blind, orifice & studding outlet.These are given to our client according to the requirement and specification.

Standard: astm / asme a/sa 182

Grade: f 44, f 45, f51, f 53, f 55, f 60, f 61

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Super Duplex Hexagon Bar 2507  UNS S32750
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Super Duplex Hexagon Bar 2507 UNS S32750

Approx. Price: Rs 500 / KilogramGet Latest Price
Product Details:
Minimum Order Quantity10 Kilogram
Single Piece Length3 meter, 6 meter
Thickness/Diameter2-3 inch, >4 inch, 1-2 inch, 0-1 inch, 3-4 inch

Super Duplex 2507® Stainless Steel Bar

UNS S32750

UNS S32750, commonly known as Super Duplex 2507®, is very similar to UNS S31803 Duplex. The difference between the two is the contents of chromium and nitrogen are higher in the Super Duplex Grade which in turn creates higher corrosion resistance as well as a longer lifespan. Super Duplex is composed of between 24% to 26% chromium, 6% to 8% nickel, 3% molybdenum, and 1.2% manganese, with the balance being iron. Also found in Super Duplex are trace amounts of carbon, phosphorus, sulfur, silicon, nitrogen, and copper. Benefits include: good weldability and workability, a high level of thermal conductivity and low coefficient of thermal expansion, high resistance to corrosion, fatigue, high resistance to pitting and crevice corrosion, high resistance to stress corrosion cracking (especially chloride stress corrosion cracking), high energy absorption, high strength, and erosion. Essentially, the Duplex alloys are a compromise; possessing some of the ferritic stress corrosion cracking resistance and much of the superior formability of the common austenitic stainless alloys, more cost effectively than the high nickel alloys.

Industries that use Super Duplex include:

• Chemical

• Marine

• Oil and Gas production

• Petrochemical

• Power

• Pulp and Paper

• Water desalinization

 

BAR SPECIFICATIONS

UNS

TYPE

AMS

ASTM

FEDERAL

CHARACTERISTICS

S32750

SUPER DUPLEX

A-479

Higher chromium and nitrogen content in Super Duplex makes it superior in corrosion resistance and enables a longer lifespan than Duplex.

 

CHEMISTRY ANALYSIS

C

MN

P

S

SI

CR

NI

MO

CU

OTHER

M/NM

.03

1.2

.035

.02

.08

24. – 26.

6. – 8.

3. – 5.

.5

N .24 – .32

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