Super duplex steel UN32750 Hex Bolts Nuts Studs

Product Details:

Containing 25% chromium, 7% nickel, 3.6% molybdenum as well as copper, tungsten, and nitrogen, UNS S32760 is a highly alloyed super duplex stainless steel with high PREN for use in aggressive environments.

This is a super duplex grade with a ferritic-austenitic microstructure. The alloy consists of around 40-50% ferrite in the annealed condition. The super duplex microstructure has the high strength of the ferritic grades whilst retaining the corrosion resistance of the austenitic grades. It is not uncommon to see the metal used as a practical solution to chloride-induced stress cracking, which is the Achille’s’ heel of stainless steel.

It also has outstanding resistance against sulphide-stress corrosion cracking in sour-gas environments.

Well known for its high impact strength, UNS S32760 displays no ductile-brittle transition but only a slight reduction in impact energy as temperature decreases. Even when welded, UNS S32760 displays only slightly lower impact strength.

It was initially developed as a seawater resistant material for pump applications in the North Sea. Following its success, it became the desired material for a wide range of uses including oil and gas applications, seawater, subsea pipework systems, heat exchangers and more.

Product Details:

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.

#nutsandbolts #duplexbolts #boltsandnuts

Product Details:

Premium Super Duplex 32750 Grade Fasteners – Strength Meets Corrosion Resistance ��

Looking for high-performance fasteners for the toughest industrial environments? Aanuraj Fasteners Pvt Ltd proudly offers Super Duplex UNS S32750 fasteners – including studs, bolts, and nuts – manufactured as per DIN, IS, and ISO standards to ensure reliability, precision, and global compatibility.

�� Available Standards:

• Studs & Bolts: DIN 931, DIN 933, DIN 976, ISO 4014, ISO 4017, IS 1364

• Nuts: DIN 934, DIN 985, ISO 4032, IS 1364, ISO 7040

• Custom Sizes: As per drawings & project requirements

�� Chemical Composition (Typical %):

• Cr: 24.0 – 26.0

• Ni: 6.0 – 8.0

• Mo: 3.0 – 5.0

• N: 0.24 – 0.32

• Fe: Balance

• Others: Mn ≤ 1.2, Si ≤ 0.8, P ≤ 0.035, S ≤ 0.02

�� Mechanical Properties:

• Tensile Strength: ≥ 795 MPa

• Yield Strength (0.2% proof): ≥ 550 MPa

• Elongation: ≥ 15%

• Hardness: ≤ 32 HRC

• Impact Energy: Excellent toughness even at sub-zero temperatures

�� Key Benefits:

• Exceptional pitting & crevice corrosion resistance in seawater and chloride-rich environments

• Superior strength-to-weight ratio compared to austenitic stainless steel

• Outstanding fatigue & stress corrosion cracking resistance

• Ideal for marine, oil & gas, desalination, chemical processing, and offshore structures

�� Order your Super Duplex 32750 fasteners today for unmatched durability and performance!

Keywords: super duplex fasteners, super duplex 32750 bolts, super duplex studs, super duplex nuts, UNS S32750, DIN 934 nuts, DIN 933 bolts, ISO 4014 bolts, IS 1364 studs, super duplex 2507 fasteners, corrosion resistant fasteners, high strength stainless steel fasteners, marine grade fasteners, offshore fasteners, chemical plant fasteners, Aanuraj Fasteners Pvt Ltd, high nickel fasteners, duplex stainless steel bolts, super duplex nuts manufacturer India

Hashtags: #superduplexfasteners, #superduplex32750, #superduplexbolts, #superduplexnuts, #UNSS32750, #superduplexstuds, #DIN934, #DIN933, #ISO4014, #IS1364, #offshorefasteners, #marinefasteners, #chemicalplantfasteners, #corrosionresistantfasteners, #aanurajfasteners, #highnickelfasteners, #duplexstainlesssteel

Product Details:

Premium Super Duplex 32750 Grade Fasteners – Strength Meets Corrosion Resistance ��
Looking for high-performance fasteners for the toughest industrial environments? Aanuraj Fasteners Pvt Ltd proudly offers Super Duplex UNS S32750 fasteners – including studs, bolts, and nuts – manufactured as per DIN, IS, and ISO standards to ensure reliability, precision, and global compatibility.
�� Available Standards:

Studs & Bolts: DIN 931, DIN 933, DIN 976, ISO 4014, ISO 4017, IS 1364

Nuts: DIN 934, DIN 985, ISO 4032, IS 1364, ISO 7040

Custom Sizes: As per drawings & project requirements

�� Chemical Composition (Typical %):

Cr: 24.0 – 26.0

Ni: 6.0 – 8.0

Mo: 3.0 – 5.0

N: 0.24 – 0.32

Fe: Balance

Others: Mn ≤ 1.2, Si ≤ 0.8, P ≤ 0.035, S ≤ 0.02

�� Mechanical Properties:

Tensile Strength: ≥ 795 MPa

Yield Strength (0.2% proof): ≥ 550 MPa

Elongation: ≥ 15%

Hardness: ≤ 32 HRC

Impact Energy: Excellent toughness even at sub-zero temperatures

�� Key Benefits:

Exceptional pitting & crevice corrosion resistance in seawater and chloride-rich environments

Superior strength-to-weight ratio compared to austenitic stainless steel

Outstanding fatigue & stress corrosion cracking resistance

Ideal for marine, oil & gas, desalination, chemical processing, and offshore structures

�� Order your Super Duplex 32750 fasteners today for unmatched durability and performance!
Keywords: super duplex fasteners, super duplex 32750 bolts, super duplex studs, super duplex nuts, UNS S32750, DIN 934 nuts, DIN 933 bolts, ISO 4014 bolts, IS 1364 studs, super duplex 2507 fasteners, corrosion resistant fasteners, high strength stainless steel fasteners, marine grade fasteners, offshore fasteners, chemical plant fasteners, Aanuraj Fasteners Pvt Ltd, high nickel fasteners, duplex stainless steel bolts, super duplex nuts manufacturer India
Hashtags: #superduplexfasteners, #superduplex32750, #superduplexbolts, #superduplexnuts, #UNSS32750, #superduplexstuds, #DIN934, #DIN933, #ISO4014, #IS1364, #offshorefasteners, #marinefasteners, #chemicalplantfasteners, #corrosionresistantfasteners, #aanurajfasteners, #highnickelfasteners, #duplexstainlesssteel

Product Details:

Premium Super Duplex 32750 Grade Fasteners – Strength Meets Corrosion Resistance ��

Looking for high-performance fasteners for the toughest industrial environments? Aanuraj Fasteners Pvt Ltd proudly offers Super Duplex UNS S32750 fasteners – including studs, bolts, and nuts – manufactured as per DIN, IS, and ISO standards to ensure reliability, precision, and global compatibility.

�� Available Standards:

• Studs & Bolts: DIN 931, DIN 933, DIN 976, ISO 4014, ISO 4017, IS 1364

• Nuts: DIN 934, DIN 985, ISO 4032, IS 1364, ISO 7040

• Custom Sizes: As per drawings & project requirements

�� Chemical Composition (Typical %):

• Cr: 24.0 – 26.0

• Ni: 6.0 – 8.0

• Mo: 3.0 – 5.0

• N: 0.24 – 0.32

• Fe: Balance

• Others: Mn ≤ 1.2, Si ≤ 0.8, P ≤ 0.035, S ≤ 0.02

�� Mechanical Properties:

• Tensile Strength: ≥ 795 MPa

• Yield Strength (0.2% proof): ≥ 550 MPa

• Elongation: ≥ 15%

• Hardness: ≤ 32 HRC

• Impact Energy: Excellent toughness even at sub-zero temperatures

�� Key Benefits:

• Exceptional pitting & crevice corrosion resistance in seawater and chloride-rich environments

• Superior strength-to-weight ratio compared to austenitic stainless steel

• Outstanding fatigue & stress corrosion cracking resistance

• Ideal for marine, oil & gas, desalination, chemical processing, and offshore structures

�� Order your Super Duplex 32750 fasteners today for unmatched durability and performance!

Keywords: super duplex fasteners, super duplex 32750 bolts, super duplex studs, super duplex nuts, UNS S32750, DIN 934 nuts, DIN 933 bolts, ISO 4014 bolts, IS 1364 studs, super duplex 2507 fasteners, corrosion resistant fasteners, high strength stainless steel fasteners, marine grade fasteners, offshore fasteners, chemical plant fasteners, Aanuraj Fasteners Pvt Ltd, high nickel fasteners, duplex stainless steel bolts, super duplex nuts manufacturer India

Hashtags: #superduplexfasteners, #superduplex32750, #superduplexbolts, #superduplexnuts, #UNSS32750, #superduplexstuds, #DIN934, #DIN933, #ISO4014, #IS1364, #offshorefasteners, #marinefasteners, #chemicalplantfasteners, #corrosionresistantfasteners, #aanurajfasteners, #highnickelfasteners, #duplexstainlesssteel

Product Details:

🔩 Allen Grub Screw in Super Duplex 32750 – 5 Point Description

1. Chemical Composition

   • Super Duplex 32750 (UNS S32750 / 1.4410) is a high-alloy stainless steel.

   • Contains Chromium (24–26%), Nickel (6–8%), Molybdenum (3–5%), Nitrogen (0.24–0.32%).

   • Provides excellent pitting, crevice, and stress corrosion resistance, especially in chloride-rich and marine environments.

2. Mechanical Properties

   • Tensile Strength: 795 MPa min.

   • Yield Strength (0.2% offset): 550 MPa min.

   • Hardness: ≤ 310 HB.

   • Very high strength compared to 300 series stainless steels, with superior toughness and fatigue resistance.

3. Dimensional Specifications

   • Sizes: M3 – M36 (metric), 1/8” – 1 ½” (inch series).

   • Lengths: Standard & customized as per project requirements.

   • Threads: Metric, UNC, UNF available.

   • Standards: As per DIN 916, DIN 913, ISO 4029, BS, and ASTM.

4. Why Choose Aanuraj Fasteners Pvt Ltd

   • Expertise in super duplex & exotic grade fasteners manufacturing.

   • Hot forged & CNC precision machining for accuracy.

   • Full traceability with heat numbers & test certificates.

   • Supplying to marine, desalination, chemical, offshore oil & gas, and refineries.

   • Customization, fast delivery, and export quality assurance.

5. Applications

   • Offshore platforms, subsea equipment, and marine engineering.

   • Desalination plants and water treatment facilities.

   • Petrochemical and chemical process industries.

   • High-pressure pumps, valves, and pipeline connections.

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Product Details:

Duplex Grub Screw M12 x 30

🔹 Chemical Composition (UNS S32760 / Super Duplex 32760)

1. Chromium: ~24–26% → Provides high resistance to corrosion and oxidation.

2. Nickel: ~6–8% → Improves toughness and structural stability.

3. Molybdenum: ~3–4% → Enhances resistance against pitting and crevice corrosion.

4. Copper & Tungsten additions → Extra resistance to aggressive chloride and acidic environments.

5. Low Carbon → Prevents carbide precipitation and intergranular corrosion.

🔹 Mechanical Properties

1. Tensile Strength: ~750–880 MPa → Very high strength compared to austenitic steels.

2. Yield Strength: ≥550 MPa → Reliable in high-load applications.

3. Hardness: ~250 HB max → Balanced hardness for wear resistance.

4. Excellent fatigue strength and impact toughness even at sub-zero temperatures.

5. Dual-phase microstructure (Austenite + Ferrite) → Ensures superior stress corrosion cracking resistance.

🔹 Dimensional Specifications (DIN 916 Standard)

1. Type: Hexagon Socket Set Screw with Cone Point.

2. Size Range: Typically available from M3 to M36.

3. Thread: Metric coarse thread as per ISO standards.

4. Tolerance: Threads produced with precision for accurate tightening.

5. Lengths: Short, medium, and long lengths as per DIN 916 specifications.

🔹 Applications

1. Offshore and marine industries → Pumps, valves, and subsea fastenings.

2. Chemical and petrochemical plants → Equipment exposed to acids, chlorides, and harsh chemicals.

3. Oil & Gas industry → Heat exchangers, pipeline flanges, and fastening of critical equipment.

4. Desalination plants → High chloride resistance makes it ideal for seawater service.

5. Power generation & infrastructure → Used in turbine assemblies and heavy-duty fastening applications.

🔹 Why Aanuraj Fasteners Pvt Ltd?

 

1. Specialized manufacturer of Super Duplex 32760 fasteners, ensuring top quality and reliability.

2. In-house hot forging, CNC machining, and thread rolling for precision and strength.

3. Custom sizes and coatings available to meet international project requirements.

4. ISO-certified processes with strict quality inspection and traceability (heat & lot numbers).

5. Trusted supplier for chemical plants, marine, and oil & gas industries across India.

Product Details:

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.

Available Tube Product form

• Straight
• Coiled
• Seamless
• Seam welded, cold redrawn and annealed

Typical Applications

• Subsea control lines
• Offshore platforms
• Fire-fighting systems
• Injection & ballast water systems
• Heat exchangers

Industries predominantly using this Grade

• Chemical processing
• Oil and gas

Additional Information:

• Item Code: AFDUPLEXSTUD1
• Production Capacity: 1000 kg/ 5 days
• Delivery Time: 7 DAYS
• Packaging Details: BOX

Product Details:

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.

Product Details:

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.