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SAE J518 ASTM A182 F53/UNS S32750 SAE Flange 1-1/4″ SCH160 6000 PSI

Standard SAE J518 / ISO 6162
Size range: 1-1/4"
Pressure range: 6000PSI
Material: F53 (2507/UNS S32750)
Used in: Construction machinery, Agricultural machinery, Industrial machinery, Marine equipment, Mining equipment, Mobile equipment, Pumps and valves, etc

  • Type: UNS S32750 SAE Flange
  • Material: 2507 (UNS S32750/F53/SAF 2507)
  • Size: 1-1/4″
  • THK: SCH160
  • Pressure: 6000PSI
  • Standard: SAE J518 / ISO 6162

What is UNS S32750?

UNS S32750 is a super duplex stainless steel that contains high levels of chromium, molybdenum, and nitrogen. It has a higher strength and better corrosion resistance than standard duplex stainless steels. UNS S32750 also has excellent toughness and ductility, making it suitable for use in harsh and demanding environments.

Chemical Composition % of (UNS32750) 2507

Grade Chemistry (Typical Values) Mechanicals
Specification Cr Ni Mo Cu N W Si Mn P S C Fe UTS 0.20% Elong Hardness PREN
max max max N/mm² Proof % (min) HB (max)
(min) (min)
2507 25 7 3.8 0.75 0.25 0.28 0.8 1.2 0.035 0.02 0.03 Bal 750 500-550 25 270 41

sae j518 astm a182 f53 uns s32750 sae flange 1 1 4 sch160 6000 psi 4 - SAE J518 ASTM A182 F53/UNS S32750 SAE Flange 1-1/4" SCH160 6000 PSI

China SAE Flange Manufacturer offers SAE J518 ASTM A182 F53/UNS S32750 SAE Flange, 1-1/4″, SCH160, 6000 PSI.

If you’re in the market for a high-performance flange, you may have come across UNS S32750 SAE flanges. These flanges are highly sought after for their exceptional corrosion resistance, high strength, and durability.

What is an SAE flange?

SAE (Society of Automotive Engineers) flanges are a type of hydraulic flange commonly used in fluid power systems. They have four bolt holes arranged in a square pattern and are designed to mate with SAE standard ports. SAE flanges are available in a variety of sizes and pressure ratings and can withstand high pressure and vibration.

Benefits of UNS S32750 SAE Flanges

UNS S32750 SAE flanges offer several advantages over other types of flanges, including:

  • Excellent corrosion resistance in chloride-rich environments;
  • High strength and toughness;
  • Good fatigue resistance;
  • Low thermal expansion;
  • High resistance to pitting and crevice corrosion;
  • Resistance to stress corrosion cracking;
  • Good weldability.

UNS S32750 SAE flange properties

UNS S32750 SAE Flanges have the following properties:

  • Density: 7.8 g/cm3
  • Tensile strength: 800-1000 MPa
  • Yield strength: 550 MPa
  • Elongation: 15-20%
  • Hardness: 32 HRC
  • Thermal conductivity: 14 W/mK
  • Electrical resistivity: 80 μΩ·cm
  • Magnetic permeability: <1.05

Applications of UNS S32750 SAE Flanges

UNS S32750 SAE Flanges are suitable for a wide range of applications in various industries, including

  • Oil and Gas
  • Chemical processing
  • Desalination
  • Marine and offshore
  • Pulp and paper
  • Power Generation
  • Mining & quarrying
  • Food and Beverage
  • Pharmaceutical

How to choose the right UNS S32750 SAE flange?

Choosing the right UNS S32750 SAE flange depends on several factors, including:

  • Pressure rating
  • Size and dimensions
  • Material compatibility
  • Operating temperature and pressure
  • Fluid type and characteristics
  • Environmental conditions
  • Certifications and standards required

It’s important to consult with a qualified engineer or supplier to determine the best UNS S32750 SAE flange for your specific application.

Manufacture of UNS S32750 SAE Flanges

The manufacturing process of SAE flanges involves several steps including cutting, forging, machining, heat treatment and surface finishing. The first step is to cut the raw material, typically a high strength steel alloy, to the required shape and size using a cutting machine or saw. This is followed by forging, where the material is heated and then pressed into shape using a hydraulic press or hammer.
The forged material is then machined to achieve the precise dimensions and tolerances required for the flange. This is done using CNC machines, lathes, milling machines and other tools. After machining, the flange is heat treated to improve its strength and toughness. This involves heating the flange to a high temperature and then rapidly cooling it, a process known as quenching.
Finally, the flange undergoes surface finishing, where it is ground, polished or coated to improve its appearance and corrosion resistance. The finished product is then inspected for quality and tested to ensure it meets the required specifications.
The manufacture of SAE flanges requires advanced engineering skills and specialised equipment to produce high quality, reliable components. There are currently many manufacturers of SAE flanges around the world, each with their own unique processes and techniques.

Testing and Quality Control

UNS S32750 SAE flanges must undergo rigorous testing and quality control procedures to ensure their performance and reliability. Some of the common tests performed on UNS S32750 SAE flanges include:

  • Hydrostatic testing
  • Ultrasonic testing
  • Magnetic particle inspection
  • Liquid penetrant inspection
  • Hardness testing
  • Dimensional inspection

Installation of UNS S32750 SAE Flanges

Proper installation of UNS S32750 SAE Flanges is critical to their performance and safety. The flanges should be installed in accordance with industry standards and guidelines using the appropriate gaskets and fasteners. It’s also important to ensure proper alignment and torque of the flange bolts to prevent leaks and other problems.

Maintenance of UNS S32750 SAE Flanges

Regular maintenance and inspection of UNS S32750 SAE Flanges is essential to their longevity and performance. It’s important to periodically inspect the flanges for signs of corrosion, wear or damage, and replace or repair as necessary. Cleaning the flanges and their mating surfaces and using appropriate lubricants can also help prevent problems and extend their life.


UNS S32750 SAE flanges are designed and manufactured to meet various international standards and certifications, including:

  • SAE J518
  • ISO 6162

Be sure to select UNS S32750 SAE flanges that meet the appropriate standards and have the necessary certifications for your application.


UNS S32750 SAE flanges offer exceptional performance and durability in high pressure and corrosive environments. With excellent corrosion resistance, high strength and compatibility with a wide range of fluids and temperatures, they are widely used in a variety of industries, including oil and gas, chemical processing and marine.
When selecting UNS S32750 SAE flanges, it’s important to consider factors such as size, material compatibility, operating conditions and industry standards. Proper installation, maintenance and inspection are also essential to ensure safe and reliable performance.
By selecting high quality UNS S32750 SAE flanges and working with experienced engineers and suppliers, you can ensure the success and longevity of your applications.
In conclusion, UNS S32750 SAE flanges are an excellent choice for high pressure and corrosive environments. With their exceptional properties and compatibility with a wide range of fluids and temperatures, they are widely used in critical applications. By considering key factors and following proper installation and maintenance procedures, you can ensure their safe and reliable performance for years to come.

Frequently Asked Questions

What is the difference between UNS S32750 and UNS S32760?
UNS S32750 and UNS S32760 are both super duplex stainless steels, but UNS S32760 has a higher chromium and molybdenum content, making it more resistant to corrosion and pitting.
What is the maximum temperature that UNS S32750 SAE flanges can withstand?
UNS S32750 SAE flanges can withstand temperatures up to 250°C (482°F) in continuous service and up to 300°C (572°F) in intermittent service.
Can UNS S32750 SAE flanges be used in seawater applications?
Yes, UNS S32750 SAE flanges are highly resistant to corrosion in seawater and are commonly used in marine and offshore applications.
What is the typical lead time for UNS S32750 SAE Flanges?
Lead times for UNS S32750 SAE Flanges can vary depending on size, quantity and specific requirements. It’s best to contact a supplier for a more accurate lead time.
Can UNS S32750 SAE Flanges be customised for specific applications?
Yes, UNS S32750 SAE Flanges can be customised with various features such as coatings, markings and special dimensions to suit specific applications.

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