Duplex 2750

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Overview:

Namah Super Alloys is a trusted manufacturer, supplier, stockist, and exporter of premium Nickel Alloy and High-Performance Alloy products. With a commitment to quality and precision, we specialize in a wide range of products including Rods (Bright Bars), Sheets & Plates, Pipes & Tubes, Pipe Fittings (Flanges, Elbows, Tees, Reducers, Nipples, etc.), Fasteners (Nuts, Bolts, Studs), CNC Components, and Sheet, Plate & Coils.

Our materials are renowned for their exceptional strength, corrosion resistance, and thermal stability, making them suitable for critical applications across industries such as aerospace, oil & gas, petrochemicals, marine, power generation, and defense. We offer custom and standard sizes, ensuring optimal performance in both high-pressure and corrosive environments. With superior machinability, weldability, and dimensional accuracy, Namah Super Alloys delivers components that meet the most demanding international standards and client specifications.

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.

High Strength and Cost Effective Corrosion Resistance

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.

AVAILABLE TUBE PRODUCT FORMS
Straight Tube | Straight Pipe | U - Tube | Coiled Tube
TYPICAL MANUFACTURING SPECIFICATIONS
ASTM A 789 / ASME SA 789
ASTM A790 / ASME SA790
ASTM A815
TYPICAL APPLICATIONS
CCUS PROJECTS
HEAT EXCHANGERS
OFFSHORE PLATFORMS
FIRE-FIGHTING SYSTEMS
INJECTION & BALLAST WATER SYSTEMS
INDUSTRIES PREDOMINANTLY USING THIS GRADE
OIL AND GAS
CHEMICAL PROCESSES
GENERAL ENGINEERING

Typical Specification

Element C Cr Cu Mn Mo N Ni P S Si
Min - 24 0.50 - 3 0.24 6 - - -
Max 0.030 26 1 2 5 0.35 8 0.35 0.015 1
PHYSICAL PROPERTIES (Room Temperature)
Specific Heat (0-100°C) 500 J.kg-1.°K-1
Thermal Conductivity 15 W.m -1.°K-1
Thermal Expansion 11 mm/m/°C
Modulus Elasticity 200 GPa
Electrical Resistivity 8.12 Ohm-cm
Density 7.80 g/cm3
MECHANICAL PROPERTIES
Temper Annealed
Tensile Rm 115 ksi (min)
Tensile Rm 800 MPa (min)
R.p. 0.2% Yield 80 ksi (min)
R.p. 0.2% Yield 550 MPa (min)
Elongation (2” or 4D gl) 15 % (min)
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