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Super Duplex Steel S32750 / S32760 Tube Fittings Manufacturer & Supplier in India
Super Duplex Steel S32750 and S32760 tube fittings are precision-engineered compression fittings manufactured from high-performance super duplex stainless steel alloys (UNS S32750 / UNS S32760, also known as Alloy 2507 / Alloy 2507Cu). These fittings deliver exceptional corrosion resistance, high strength, and long-term durability in demanding environments including offshore oil and gas platforms, chemical processing plants, seawater handling systems, and desalination facilities.
Due to their high chromium, molybdenum, and nitrogen content, Super Duplex instrumentation tube fittings offer strong resistance to chloride stress corrosion cracking, pitting, and crevice corrosion. They also maintain excellent mechanical strength and structural stability in high-pressure and high-temperature applications, ensuring leak-free and reliable performance in critical industrial piping systems.
Kalpataru Piping Solutions is a trusted manufacturer, supplier, and exporter of Super Duplex Steel UNS S32750 and UNS S32760 instrumentation tube fittings used for secure connections in tubing, piping, and hydraulic systems. These Super Duplex compression fittings are widely used in industries such as oil and gas, petrochemicals, marine engineering, power generation, and chemical processing.
Our UNS S32750 union elbow fittings are designed for high-pressure systems and provide excellent fatigue strength and vibration resistance. Super Duplex S32760 bulkhead elbow fittings are suitable for panel or equipment wall mounting, allowing easy system partitioning during inspection and maintenance.
With ISO 9001:2015 certification and over 15 years of manufacturing experience, we supply super duplex tube fittings to oil & gas operators, chemical plants, and marine engineering firms across 40+ countries including UAE, Saudi Arabia, USA, and Singapore.
In addition, Super Duplex Steel S32750 union tee and cross fittings provide reliable branching connections in instrumentation lines. Precision-machined threads and ferrule geometry ensure tight sealing, corrosion resistance, and long service life in demanding industrial environments.
- What are Super Duplex Steel S32750 Tube Fittings?
- Specification of Super Duplex Steel S32750 Tube Fittings
- UNS S32750 / S32760 Super Duplex Tube Fittings Manufacturing Standards
- Super Duplex S32750 / S32760 Compression Tube Fittings Sizes
- Sizes of SDSS Tube Union
- Super Duplex Blanking Plug Metric Sizes
- S32750 Female Elbow Thread I.D
- S32760 Male Elbow Thread O.D
- UNS S32750 / S32760 Super Duplex Tube Fitting Connection Types
- Grades & Variants of SDSS Tube Fittings
- Material Configurations of 25Cr SDSS Instrumentation Fittings
- WNR 1.4501 Ferrule Fittings Chemical Composition
- Equivalent Material Grades of Super Duplex Tube Fittings
- Mechanical Properties of Super Duplex Steel S32750 Tube Fittings
- Physical Properties of S32760 Stainless Adapter Fittings
- Density of Alloy 2507 Hydraulic Fittings
- Temperature Range of WNR 1.4410 Flare Fittings
- Pressure Limit of S32750 / S32760 Stainless Bushings
- Super Duplex Female Run Tee Pressure Rating
- Advantages of Super Duplex 2507 / S32750 Tube Fittings
- Installation Guide for Super Duplex Steel S32750 / S32760 Tube Fittings
- Installation of Super Duplex Hex Nipple Fittings
- HS Code of WNR 1.4410 / WNR 1.4501 Tube Fittings
- Applications of Super Duplex Steel S32750 / S32760 Tube Fittings
What are Super Duplex Steel S32750 / S32760 Tube Fittings?
Super Duplex Steel S32750 (Alloy 2507, WNR 1.4410) and S32760 (Zeron 100, WNR 1.4501) tube fittings are high-performance compression fittings manufactured from super duplex stainless steel alloys with a balanced 50/50 austenitic-ferritic microstructure. Both grades offer exceptional corrosion resistance and mechanical strength in aggressive chloride environments.
S32750 contains approximately 25% chromium, 7% nickel, and 4% molybdenum with nitrogen additions, providing a PREN (Pitting Resistance Equivalent Number) of approximately 42-43. S32760 features a similar chromium and nickel content but includes tungsten (0.5-1.0%) and copper (0.5-1.0%) additions that enhance resistance to localized corrosion in the most aggressive seawater and sour gas environments.
Both grades are specified interchangeably in many applications, with S32760 chosen when maximum pitting resistance or copper/tungsten-enhanced performance is required for seawater handling or sour service conditions.
S32750 vs S32760 Super Duplex — Key Differences
Property | S32750 (Alloy 2507 / WNR 1.4410) | S32760 (Zeron 100 / WNR 1.4501) |
UNS Number | S32750 | S32760 |
Werkstoff Nr. | 1.4410 | 1.4501 |
Trade Name | Alloy 2507 | Zeron 100 |
Chromium (%) | 24–26% | 24–26% |
Molybdenum (%) | 3.0–5.0% | 3.0–4.0% |
Key Additions vs S32750 | — | W (0.5–1.0%) + Cu (0.5–1.0%) — enhances pitting resistance |
PREN (Pitting Resistance) | ~42–43 | ~40–41 (W and Cu compensate) |
Primary Application | Offshore, chemical, desalination — general high-corrosion service | Seawater handling, sour service — when Cu and W additions are needed |
Tensile Strength | 795 MPa min | 750 MPa min |
Super Duplex Steel S32750 tube fittings Types




















Specification of Super Duplex Steel S32750 Tube Fittings
Super Duplex Steel S32750 Tube Fittings, UNS S32750 Instrumentation Tube Fittings, and Super Duplex Compression Tube Fittings are manufactured according to international standards to ensure high strength, corrosion resistance, and reliable performance in demanding industrial environments.
| Specifications | ASTM A182, A276, A479 / ASME SA182, SA276, SA479 |
|---|---|
| Size | 1/16″ to 1/2″ & 1.5MM to 38.1MM |
| Thread | NPT, PT, BST, NPS, PS, BSP |
| Pressure | 6000PSI for Stainless Steel / 300/1000/3000PSI for Brass |
| Types | Tube to Union, Tube to Male, Tube to Female, Instrument Pipe Fittings, Accessories |
UNS S32750 / S32760 Super Duplex Tube Fittings Manufacturing Standards
Super Duplex Steel S32750 Tube Fittings, UNS S32760 Tube Fittings, and Super Duplex 2507 Compression Tube Fittings are manufactured according to internationally recognized standards to ensure dimensional accuracy, mechanical strength, and corrosion resistance in industrial piping and instrumentation systems.
| American Standard | Manufacturing Form |
|---|---|
| ASTM A276 | Super Duplex stainless steel bars used for machining tube adapters and straight fittings |
| ASTM A479 | Stainless steel bars for pressure vessel and high-temperature applications |
| ASTM A276M / ASTM A479M | Metric versions of ASTM A276 and A479 specifications |
| ASME SA 276 / SA 479 | ASME equivalent standards for stainless steel bars used in piping systems |
| ASTM A182 | Forged or rolled alloy and stainless steel fittings such as compression cross fittings |
| ASME SA 182 | ASME specification for forged stainless steel fittings including compression tee |
| ASTM A182M | Metric specification for forged stainless steel fittings |
| ASME SA 789 | Seamless and welded ferritic/austenitic stainless steel tubing used in instrumentation systems |
| ASTM A240 / ASME SA 240 | Plate, sheet, and strip used for pressure vessels and general stainless steel applications |
Super Duplex S32750 / S32760 Compression Tube Fittings Sizes
Alloy 2507 Tube Fittings, Super Duplex S32750 Compression Fittings, and UNS S32760 Instrumentation Tube Fittings are available in multiple sizes to support high-pressure hydraulic and instrumentation systems.
| Tube Fittings Types | Forms of Super Duplex 2507 Tube Fittings | Size OD | Size Inch |
|---|---|---|---|
| Tube To Union | Union Tee, Bulkhead Union, Union Elbow, Reducing Elbow, Union Cross | 6mm to 38mm | 1/4″ to 1 1/2″ |
| Tube to Male Fittings | Male Connector, Male Bulkhead Connector, Male Elbow, Male Run Tee, Male Branch Tee | 6mm to 38mm | 1/4″ to 1 1/2″ |
| Tube to Female Fittings | Female Connector, Female Bulkhead Connector, Female Run Tee, Female Branch Tee | 6mm to 38mm | 1/4″ to 1 1/2″ |
| Tube to Pipe Fittings | Female Elbow, Street Elbow, Allen Key, Bushing, Female Cap, Female Cross, Female Elbow, Female Tee, Hex Coupling, Hex Nipple, Male Elbow, Male Female Adapter, Male Female Branch Tee, Male Tee, Reducing Hex Coupling, Reducing Hex Nipple, Street Elbow, Street Tee, Union Joint Ball | 6mm to 38mm | 1/4″ to 1 1/2″ |
| Tube Fittings Accessories | Blanking End, Blanking Plug, Tube Nut, Front Ferrule, Back Ferrule | 6mm to 38mm | 1/4″ to 1 1/2″ |
Sizes of SDSS Tube Union
Super Duplex Stainless Steel Tube Union Fittings, UNS S32750 Tube Unions, and Super Duplex 2507 Union Fittings are produced in various BSPT and BSPP thread sizes to ensure leak-tight pipe connections.
| Dash | BSPT & BSPP | Size | Size & Pitch |
|---|---|---|---|
| – | inch – TPI | -10 | 5/8 – 14 |
| -20 | 1 1/4 – 11 | -4 | 1/4 – 19 |
| -48 | 3 – 11 | -24 | 1 1/2 – 11 |
| -8 | 1/2 – 14 | -6 | 3/8 – 19 |
| -40 | 2 1/2 – 11 | -32 | 2 (11) |
| -12 | 3/4 – 14 | -16 | 1 – 11 |
| -2 | 1/8 – 28 |
Super Duplex Blanking Plug Metric Sizes
Super Duplex S32750 Blanking Plugs, UNS S32760 Pipe Plugs, and Super Duplex 2507 Threaded Plugs are manufactured in metric sizes to provide secure sealing in tubing and piping systems.
| Metric sizes (Inches) | Size (mm) |
|---|---|
| 1 | 25 mm |
| 3/4 | 20 mm |
| 3/8 | 12 mm |
| 5/16 | 10 mm |
| 3/16 | 6 mm |
S32750 Female Elbow Thread I.D
Super Duplex S32750 Female Elbow Fittings, UNS S32750 Threaded Elbows, and Super Duplex Instrumentation Elbow Fittings are designed with precise thread inner diameters to ensure standardized and leak-proof connections.
| BSPP Female Thread I.D | inch | mm |
|---|---|---|
| 0.75 | 19,1 | 2.26 |
| 57,4 | 2.86 | 72,6 |
| 0.6 | 15,2 | 3.36 |
| 85,4 | 0.97 | 24,6 |
| 1.21 | 30,7 | 1.55 |
| 39,4 | 0.82 | 20,8 |
| 1.79 | 45,5 | 0.34 |
| 8,6 | 0.47 | 11,9 |
S32760 Male Elbow Thread O.D
Super Duplex S32760 Male Elbow Fittings, UNS S32760 Threaded Elbows, and Super Duplex 2507 Pipe Elbows feature accurately machined thread outer diameters for secure mechanical joints.
| BSPT Male Thread O.D | inch | mm |
|---|---|---|
| 0.37 | 9,5 | 0.5 |
| 12,8 | 0.64 | 16,3 |
| 0.8 | 20,4 | 0.89 |
| 22,5 | 1.02 | 25,9 |
| 1.28 | 32,6 | 1.62 |
| 41,1 | 1.85 | 47,0 |
| 2.31 | 58,6 | 2.92 |
| 74,1 | 3.41 | 86,6 |
UNS S32750 / S32760 Super Duplex Tube Fitting Connection Types
Super Duplex Steel S32750 Tube Fittings, UNS S32760 Hydraulic Tube Fittings, and Super Duplex 2507 Instrumentation Fittings are available with multiple connection types for complex piping systems.
- JIC
- Butt weld
- Socket weld
- Threaded
- Welding
Grades & Variants of SDSS Tube Fittings
Super Duplex Stainless Steel Tube Fittings, UNS S32750 Tube Fittings, and UNS S32760 Tube Fittings are supplied in different grades and alloy variants to meet diverse industrial requirements.
- 6MO Alloy Tube Fittings
- Super Duplex 2507 Grade Tube Fittings
- UNS S32750 Tube Fittings
- UNS S32760 Tube Fittings
- 254 SMO Alloy Tube Fittings
Material Configurations of 25Cr SDSS Instrumentation Fittings
Super Duplex Instrumentation Tube Fittings, UNS S32750 Instrumentation Fittings, and Super Duplex 2507 Ferrule Fittings are engineered for precise instrumentation and process control applications.
- Female Connectors
- Adjustable Elbows and Tees
- Tube-to-Male Connections
- Tube-to-Tube Couplings
- Tube Closures
- Ferrule Assemblies, Weld Connectors, and Nuts
Chemical Composition of Super Duplex Tube Fittings
WNR 1.4410 (UNS S32750) Chemical Composition
| Element | Name | Composition |
|---|---|---|
| Cr | Chromium | 24.0% – 26.0% |
| Ni | Nickel | 6.0% – 8.0% |
| Mo | Molybdenum | 3.0% – 5.0% |
| N | Nitrogen | 0.24% – 0.32% |
| C | Carbon | 0.030% max |
| Mn | Manganese | 1.20% max |
| P | Phosphorus | 0.035% max |
| S | Sulfur | 0.010% max |
| Cu | Copper | 0.50% max |
WNR 1.4501 (UNS S32760) Chemical Composition
WNR 1.4501 Super Duplex Ferrule Fittings, UNS S32760 Tube Fittings, and Super Duplex 2507 Compression Fittings contain a balanced chemical composition that enhances corrosion resistance, mechanical strength, and resistance to chloride stress corrosion cracking.
| Element | Name | Composition |
|---|---|---|
| Cr | Chromium | 24.0% – 26.0% |
| Ni | Nickel | 6.0% – 8.0% min. |
| Mo | Molybdenum | 3.0% – 5.0% |
| Cu | Copper | 0.50% max |
| S | Sulfur | 0.010% max |
| Mn | Manganese | 1.20% max |
| P | Phosphorus | 0.035% max |
| C | Carbon | 0.030% max |
Equivalent Material Grades of Super Duplex Tube Fittings
| STANDARD | UNS | WERKSTOFF NR. | Trade Name |
|---|---|---|---|
| Super Duplex 2507 | S32750 | 1.4410 | Alloy 2507 |
| Super Duplex Zeron 100 | S32760 | 1.4501 | Zeron 100 |
Mechanical Properties of Super Duplex Steel S32750 Tube Fittings
Super Duplex Steel S32750 Compression Tube Fittings, UNS S32750 Instrumentation Tube Fittings, and Super Duplex 2507 Pipe Fittings offer high tensile strength and excellent mechanical performance.
Properties | Values |
|---|---|
| Elongation | 15% |
| Yield Strength | 550 MPa |
| Tensile Strength | 795 MPa |
| Hardness (HB) | 310 |
Physical Properties of S32760 Stainless Adapter Fittings
Super Duplex S32760 Adapter Fittings, UNS S32760 Stainless Steel Adapters, and Super Duplex 2507 Instrumentation Adapters exhibit reliable physical properties suitable for corrosive and high-pressure environments.
| Properties | Values |
|---|---|
| Density | g/cm³: 7.8 / lb/in³: 0.28 |
| Modulus of elasticity | GPa: 200, 194, 186, 180 / psi x 10-6: 29 |
| Poisson’s ratio | 0.3 |
| Linear expansion (RT → T)°C | x 10-6/°C: 13, 13.5, 14 |
| Thermal conductivity | W/m°C: 15, 16, 17, 18 / Btu/h ft°F: 8.7 |
| Thermal capacity | J/kg°C: 500, 530, 560, 590 |
| Electric resistivity | µΩm: 0.8, 0.85, 0.9, 1 |
Density of Alloy 2507 Hydraulic Fittings
Alloy 2507 Hydraulic Tube Fittings, Super Duplex S32750 Hydraulic Fittings, and UNS S32760 Hydraulic Connectors provide an excellent strength-to-weight ratio for demanding industrial systems.
| Density | Values |
|---|---|
| lb/in³ | 0.281 |
| g/cm³ | 7.8 |
Temperature Range of WNR 1.4410 Flare Fittings
WNR 1.4410 Super Duplex Flare Fittings, UNS S32750 Flare Tube Fittings, and Super Duplex 2507 Flare Connectors operate effectively across a wide temperature range.
| Properties | Values | Values |
|---|---|---|
| Temperature Range | °F | °C |
| -58° to 572° | -50° to 300°C |
Pressure Limit of S32750 / S32760 Stainless Bushings
Super Duplex S32750 Bushings, UNS S32760 Threaded Bushings, and Super Duplex 2507 Pipe Bushings are designed to handle high pressure in demanding industrial piping applications.
| Size | Pressure |
|---|---|
| Over 9/16″ | 10,000 psig / 690 bar |
| up to 9/16″ | 20,000 psig / 1380 bar |
| up to 1/2″ | 15,000 psig / 1040 bar |
| Over 1/2″ | 3600 psig / 250 bar |
Super Duplex Female Run Tee Pressure Rating
Super Duplex Female Run Tee Fittings, UNS S32750 Run Tee Connectors, and Super Duplex 2507 Instrumentation Tee Fittings offer reliable pressure performance in instrumentation systems.
| Non-positionable | SAE / MS Thread Size | Designator | psig (bar) |
|---|---|---|---|
| – | – | – | 5076 (349) |
| 5/16-24 | 2ST | 3/8-24 | 3ST |
| 7/16-20 | 4ST | 1/2-20 | 5ST |
| 9/16-18 | 6ST | – | 4568 (314) |
| 3/4-16 | 8ST | – | 3625 (249) |
| 7/8-14 | 10ST | – | – |
Advantages of Super Duplex 2507 / S32750 Tube Fittings
Super Duplex Steel 2507 Tube Fittings, UNS S32750 Tube Fittings, and UNS S32760 Compression Fittings provide exceptional corrosion resistance, strength, and durability compared to standard stainless steel fittings.
- Exceptional durability against fatigue and erosion
- Impressive structural strength
- Outstanding resistance to cracking
- Low thermal expansion coefficient, providing dimensional stability across a wide temperature range
- Strong protection against crevice corrosion
Installation Guide for Super Duplex Steel S32750 / S32760 Tube Fittings
Proper installation of Super Duplex Steel tube fittings is essential to ensure leak-free performance and long service life in high-pressure instrumentation and hydraulic systems. Follow the steps below for correct installation.
Step-by-Step Installation Procedure
- Cut the tube square using a proper tube cutter. Avoid using a hacksaw as it may create uneven edges that affect sealing performance.
- Deburr the tube ends thoroughly on both the inside and outside edges to remove sharp burrs that could damage the ferrule or fitting components.
- Insert the tube fully into the fitting body until it reaches the internal tube stop. Full insertion is critical to ensure proper ferrule grip and sealing.
- Slide the nut and ferrule(s) onto the tube in the correct orientation before tightening.
- Finger-tighten the nut until resistance is felt.
- Mark the nut position with a marker to track the correct tightening rotation.
- Tighten the nut using a wrench according to the ferrule design:
- Single ferrule fittings: Tighten approximately 1¼ turns past finger-tight.
- Double ferrule fittings: Tighten approximately 1½ turns past finger-tight.
- For reassembly, tighten the nut only ¼ turn past finger-tight to restore the seal.
Torque Recommendation
For critical applications, use a calibrated torque wrench to achieve consistent tightening. Torque values may vary depending on tube size, pressure rating, and fitting design, therefore it is recommended to follow the manufacturer’s torque specifications or pressure rating tables for accurate tightening values.
Proper installation helps maintain leak-free sealing, vibration resistance, and long-term reliability in high-pressure instrumentation and process control systems.
Installation of Super Duplex Hex Nipple Fittings
Super Duplex Hex Nipple Fittings, UNS S32750 Threaded Nipples, and Super Duplex 2507 Pipe Nipples should be installed using correct ferrule and threaded connection methods to ensure leak-free operation.
| Installation | Type |
|---|---|
| Single Ferrule | Sleeve Type |
| Metric thread | Bulkhead Union Elbow |
| Metric | JIC |
| Threaded | NPT |
| BSP | Super Duplex Male Street Tee |
| Double Ferrule | 3000-10000 PSI pressure |
| Port Size: 1/16″ to 1 1/2″ | Super Duplex Stainless Steel Tube Nuts |
| UNF | Double Ferrule |
| NPT | 3000-6000 Psig pressure |
| BSPT | Branch Reducing Tee |
| Male To Female | Round head |
| Threaded | Street Elbow |
| Round head | Threaded |
| Super Duplex Female Thread Elbow | Double Ferrule |
| 3000-6000 Psig pressure | UNF |
| NPT | BSPT |
| SDSS Bulkhead Union | Single Ferrule |
| Sleeve Type | Metric thread |
| Cross | Round head |
| Threaded | Super Duplex Female Run Tee |
HS Code of WNR 1.4410 / WNR 1.4501 Tube Fittings
WNR 1.4410 Super Duplex Tube Fittings, WNR 1.4501 Instrumentation Fittings, and Super Duplex 2507 Pipe Fittings are classified under standardized HS codes for international trade and export documentation.
| Property | Value |
|---|---|
| HS Code | 72192190 |
Applications of Super Duplex Steel S32750 / S32760 Tube Fittings
Super Duplex Steel S32750 and S32760 tube fittings are widely used in industries where piping systems are exposed to aggressive chemicals, seawater, and high-pressure operating conditions. Their excellent resistance to chloride-induced corrosion, high mechanical strength, and long service life make them suitable for critical instrumentation and hydraulic systems.
Some common real-world applications include:
- Subsea control line connections in deepwater oil fields, where fittings must withstand high pressure, seawater exposure, and extreme operating conditions.
- Hydraulic line fittings on offshore drilling rigs, ensuring leak-free fluid transfer in high-pressure hydraulic systems.
- Sampling system connections in desalination plants, where corrosion-resistant fittings are required for seawater processing and monitoring systems.
- Instrument air line connections in chemical processing units, providing secure and reliable connections for automated control systems.
- Seawater cooling system connections on FPSOs (Floating Production Storage and Offloading units), where high resistance to pitting and crevice corrosion is essential.
Because of these capabilities, Super Duplex instrumentation tube fittings are frequently used in offshore platforms, petrochemical facilities, marine engineering systems, and high-pressure industrial process lines where reliability and corrosion resistance are critical.
Other Available Stock of Super Duplex Steel Instrumentation Tube Fittings
- Super Duplex Steel Swagelok instrumentation Fittings
- ASTM A182 Super Duplex Steel S32760 Reducing Union Tee
- Super Duplex 2507 45 Degree Positionable Male Elbow
- ASTM A276 Super Duplex Steel S32750 Ferrule Nut
- Super Duplex Steel S32760 Positionable Male Run Tee
- Super Duplex Steel S32750 /S32760 Hex Plug
- ASTM A182 Super Duplex S32750 Tube End Closure
- ASME SA182 S32750 Super Duplex Steel Fitting End Closure
- 2507 Super Duplex Steel Parker Compression Fittings
- Super Duplex Steel A182 S32750 Bulkhead Reducing Union
- Super Duplex Steel S32750 Hydraulic Fittings in India
- Super Duplex Steel Single Ferrule Compression Fittin
- Super Duplex Steel S32760 Ferrule Fitting Supplier
- UNS S32750 Bulkhead Lock Nut
- Super Duplex S32750 Positionable Male Elbow
- Super Duplex Steel S32760 Hex Nipple
- Super Duplex Steel S32750 / S32760 Hex Bushing
- SA479 Super Duplex Steel S32750 Male Adapter
- Super Duplex Steel DIN 1.4410 Female Adapter
- Super Duplex Steel S32750 /S32760 Allen Key Plug
- UNS S32750 /S32760 Instrumentation Pipe Fittings
- Super Duplex Steel S32750/ S32760 Tube Cap Fittings
- Super Duplex Steel Tylok Instrumentation Fittings
- S32750 /S32760 Super Duplex Steel Union Joint Ball
- Super Duplex S32760 Two Ferrule Compression Fitting
- Super Duplex Steel S32750 Ferrule Tube Fittings
- Super Duplex 2507 High Pressure Hydraulic Tube Fittings
- DIN 1.4410 Front Ferrule
Related Products
Need Super Duplex S32750 or S32760 Tube Fittings for your project?
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FAQ’s About Super Duplex Steel S32750 tube fittings
A: UNS S32750 (Alloy 2507, WNR 1.4410) is a super duplex stainless steel with 25% chromium, 7% nickel, and 4% molybdenum. It offers higher strength and corrosion resistance than standard duplex grades (S31803/S32205) and is specified for offshore, chemical, and desalination service where chloride-induced corrosion is the design-limiting factor.
A: Both are super duplex stainless steel with similar chromium and nickel content. S32760 (Zeron 100, 1.4501) adds tungsten and copper to the S32750 chemistry, providing equivalent or slightly better pitting resistance in seawater service. Both grades are interchangeable in most applications — S32760 is preferred when the service involves sour gas or aggressive seawater.
A: Material standards: ASTM A276 and ASTM A479 for bar and wire; ASTM A182 for forgings; ASME SA 789 for tubes. Fitting standards: ASTM A182, ASME SA182. Thread standards: NPT, BSP, BSPT. Size standards: ASME B16.11 for socket weld and threaded fittings.
A: Primary applications include subsea control systems, offshore hydraulic lines, desalination sampling systems, seawater cooling on FPSOs, and instrument connections in chemical processing plants where resistance to chloride stress corrosion cracking and pitting is mandatory.