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Super Duplex 2507 Threaded Rods Manufacturer & Exporter in India

Explore Super Duplex 2507 Threaded Rods Manufacturer & Exporter in India manufactured for demanding industrial applications with reliable strength, corrosion resistance and compliance with international standards.
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-50

Min Temp

300

Max Temp

🌡

300

Suitable for continuous service up to approximately 300°C under typical operating conditions.

⚡

850

Typical tensile strength around 850 MPa depending on product form and heat treatment.

🛡

Excellent

Excellent corrosion resistance in a wide range of industrial environments.

⚖

7.8

Typical density is approximately 7.8 g/cm³.

Product Overview

What are Super Duplex 2507 Threaded Rods?

Super Duplex 2507 threaded rods are high-strength, corrosion-resistant fasteners manufactured from UNS S32750 or S32760 duplex stainless steel bar, conforming to ASTM A479 or ASTM A276. These rods combine austenitic and ferritic microstructures, delivering exceptional resistance to chloride-induced pitting, crevice corrosion, and stress corrosion cracking, even in aggressive seawater and chemical environments.

With a PREN (Pitting Resistance Equivalent Number) of =41, Super Duplex 2507 threaded rods are specified for critical bolted joints in offshore, desalination, and chemical processing applications where standard stainless steels fail. Their high yield strength (=550 MPa) allows for reduced rod diameters and lighter assemblies without compromising safety or durability.

Quick Specifications

MaterialSuper Duplex 2507
UNS NumberS32750 / S32760
DIN Number1.4410
Material StandardASTM A479 / ASTM A276
Rod Standard (Metric)DIN 975 / DIN 976
Rod Standard (Inch)ASME B18.31.3
Thread FormISO Metric / UNC / UNF
Diameter RangeM6-M64 / ¼"-2½"
Tensile Strength800 MPa (116 ksi) min
Yield Strength550 MPa (80 ksi) min
HardnessMax 32 HRC / 300 HB
? All rods supplied with full traceability and PMI certification. NABL-accredited lab reports available.

Complete the Fastener Set

Other Super Duplex 2507 Fastener Products Available from RealBolt

RealBolt also manufactures the complete Super Duplex 2507 fastener range from certified super duplex stainless steel bar stock, including Super Duplex 2507 Bolts, Super Duplex 2507 Nuts, Super Duplex 2507 Screws, Super Duplex 2507 Washers, and Super Duplex 2507 Studs. All Super Duplex 2507 fastener types are produced to ASTM with full EN 10204 MTC 3.1/3.2 documentation.
Super Duplex 2507 Bolts
Super Duplex 2507 Nuts
Super Duplex 2507 Screws
Super Duplex 2507 Washers
Super Duplex 2507 Studs

Technical Data

Super Duplex 2507 Threaded Rods Dimensions, Sizes & Thread Standards

Super Duplex 2507 Threaded Rods are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 975 (full thread) / DIN 976 (studs) / ASME B18.31.3. Custom lengths available in 10mm increments. Inch sizes per UNC/UNF thread forms. All Super Duplex 2507 threaded rods dimensions conform to applicable DIN, ISO, and ASME B18 standards.

Threaded Rod Dimensions - Metric (DIN 975)

Size (M)Pitch (mm)Core Dia (mm)Length Range (mm)Thread Type
M61.04.8100-2000Full
M81.256.6100-2000Full
M101.58.2100-3000Full
M121.759.9100-3000Full
M162.013.6100-3000Full
M202.517.0100-3000Full
M243.020.9100-3000Full
M303.526.4100-3000Full
M364.032.0100-3000Full
M424.537.7100-3000Full
M485.043.4100-3000Full
M565.550.8100-3000Full
M646.058.1100-3000Full

Dimensional & Material Standards

StandardCoversThread
DIN 975Threaded rods, full threadMetric
DIN 976Stud bolts, double endMetric
ASME B18.31.3Threaded rods, inchUNC/UNF
ISO 898-1Mechanical propertiesMetric
ASME B1.1Unified threadsUNC/UNF
Material StandardRequirement
ASTM A479Bar/rod - UNS S32750/S32760
ASTM A276Rod, hot/cold finished
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC
NACE MR0175Sour service =32 HRC

Material Chemistry

Super Duplex 2507 Chemical Composition

Super Duplex 2507 Threaded Rods are manufactured from a high-alloy ferritic-austenitic steel containing chromium (24–26%), molybdenum (3.5–5%), and nitrogen (0.24–0.32%) per ASTM. These precise elemental limits produce PREN ≥ 40 — confirming seawater pitting immunity — and deliver the 550 MPa minimum yield strength required for NORSOK M-630 subsea qualification.

Chemical Composition per ASTM A479

ElementComposition (%)
Chromium (Cr)24.0-26.0
Nickel (Ni)6.0-8.0
Molybdenum (Mo)3.0-5.0
Nitrogen (N)0.24-0.32
Manganese (Mn)1.2 max
Silicon (Si)0.8 max
Carbon (C)0.030 max
Phosphorus (P)0.035 max
Sulphur (S)0.020 max
Iron (Fe)Balance
? All heats spectro-tested and certified by NABL-accredited laboratory. PMI available on request.

Why Super Duplex 2507 Alloy Composition Matters for Threaded Rods

High Chromium & Molybdenum — Pitting & Crevice Resistance
The 24–26% Cr and 3–5% Mo content gives Super Duplex 2507 threaded rods a PREN =41, ensuring outstanding resistance to pitting and crevice corrosion in seawater, brine, and chloride-rich process streams.
Nitrogen Addition — Strength & SCC Resistance
Nitrogen enhances yield strength and increases resistance to chloride stress corrosion cracking, making these rods ideal for high-pressure, high-temperature bolted joints in aggressive environments.
Balanced Duplex Structure
The dual-phase (austenitic-ferritic) microstructure provides a unique combination of high mechanical strength and excellent corrosion resistance, outperforming 316L and 904L in demanding applications.

Fastener Performance

Super Duplex 2507 Threaded Rods Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for Super Duplex 2507 Threaded Rods per ASTM. Super Duplex 2507 threaded rods achieve 850 MPa tensile strength, with hardness, yield, and elongation values verified by NABL-accredited testing and reported in the EN 10204 MTC.

Rod SizeDry (Nm)Lubricated (Nm)Clamp Load (kN)
M121108838
M1627021680
M20540432125
M24930744180
M3018601488285
M3632002560420
M4251004080580
M4876006080760
?? Anti-galling: Use molybdenum-based or PTFE anti-seize. Lubricated values assume K=0.15. Avoid copper-based anti-seize on duplex stainless steel.

Industry Applications

Super Duplex 2507 Threaded Rods Applications — Industries & End Uses

Super Duplex 2507 Threaded Rods from RealBolt are specified across subsea oil and gas, FPSOs, desalination, and offshore where excellent corrosion resistance and 850 MPa tensile strength are required for reliable fastener performance. Click each industry below for detailed application examples.
Super Duplex 2507 threaded rods are the industry standard for bolted connections in offshore jackets, topsides, and subsea manifolds. Their high PREN and mechanical strength ensure long-term reliability in splash zones, riser clamps, and subsea pipeline supports exposed to seawater and chlorides.
Used for filter press tie rods, membrane housing connections, and high-pressure piping supports in reverse osmosis (RO) and multi-effect distillation (MED) plants. Super Duplex 2507 rods prevent crevice corrosion and stress corrosion cracking in brine and chlorinated water environments.
Threaded rods for heat exchanger tie rods, reactor vessel closures, and acid pipeline supports in phosphoric acid, urea, and organic acid service. Outperforms 316L and 904L in mixed chloride and acidic process streams.
Specified for hull penetrations, deck equipment mounting, and shaft coupling assemblies where resistance to seawater, biofouling, and cyclic loading is critical. Approved by major marine classification societies.

Super Duplex 2507 Threaded Rods Standards & International Certifications

Super Duplex 2507 Threaded Rods from RealBolt Engineering Industries are manufactured to internationally recognised fastener dimensional standards covering thread form, tolerances, strength grades, and quality requirements. Every batch ships with EN 10204 MTC 3.2 (third-party), NACE MR0175/ISO 15156, NORSOK M-630, Charpy impact certificates, and PMI (XRF) reports — available on request for all orders.
Standards
DIN 975 DIN 976-1 ASME B18.31.2 IS 1367 IS 1364 IS 12427
Certifications
ISO 9001:2015NACE MR0175NABL LabPED 2014/68/EUMTC 3.1 / 3.2

Buy Super Duplex 2507 Threaded Rods from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified Super Duplex 2507 Threaded Rods — for competitive pricing, EN 10204 MTC 3.1/3.2 documentation, and fast Mumbai dispatch. Standard sizes are ex-stock; custom dimensions accepted with 2–3 week lead time. Request your quote today.
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Answers for Buyers

Super Duplex 2507 Threaded Rods — Frequently Asked Questions

Browse expert answers to common questions about Super Duplex 2507 Threaded Rods from RealBolt — covering PREN ≥ 40, NORSOK M-630, NACE MR0175, ASTM A182 F53/F55, sizes, and EN 10204 3.2 third-party documentation. Contact our technical team directly for project-specific guidance on Super Duplex 2507 threaded rods selection and pricing.
Super Duplex 2507 threaded rods are supplied to DIN 975 (metric full thread), DIN 976 (studs), and ASME B18.31.3 (inch UNC/UNF). Custom thread forms such as BSW, BSF, and ACME are available on request. Metric coarse and fine pitches can be supplied to ISO 965-1/2.
Use a molybdenum-based or PTFE anti-seize compound (such as Molykote 1000 or Loctite LB 8014) to prevent galling and facilitate disassembly. Avoid copper-based anti-seize, as it can cause galvanic corrosion with duplex stainless steel. Lubricated torque values should be reduced by 20% compared to dry assembly.
Yes – Super Duplex 2507 threaded rods have a PREN =41 and are fully resistant to pitting, crevice, and stress corrosion cracking in seawater, brine, and high-chloride environments. They are specified in NORSOK M-650 and Shell DEP for offshore and desalination projects. No additional coating or cathodic protection is required.
Standard sizes (M12-M36) are available ex-stock with no formal MOQ – single rods can be supplied for urgent maintenance. Custom diameters or cut lengths typically require a 10 kg minimum. Price breaks are available at 25, 100, and 250 rods.

Industrial Cities We Serve:

  • Ahmedabad
  • Aurangabad
  • Bengaluru
  • Chennai
  • Coimbatore
  • Faridabad
  • Gandhidham
  • Greater Noida
  • Gurugram
  • Hazira
  • Hosur
  • Hyderabad
  • Jamnagar
  • Jamshedpur
  • Ludhiana
  • Mumbai
  • Mundra
  • Mysuru
  • Nagpur
  • Nashik
  • Navi Mumbai
  • Noida
  • Pune
  • Rajkot
  • Sanand
  • Surat
  • Thane
  • Tiruppur
  • Vadodara
  • Visakhapatnam

Countries We Export To:

  • US
  • Canada
  • Mexico
  • Germany
  • UK
  • France
  • Italy
  • Spain
  • Netherlands
  • Belgium
  • Poland
  • Sweden
  • Norway
  • Denmark
  • Turkey
  • UAE
  • Saudi Arabia
  • Qatar
  • Oman
  • Kuwait
  • Bahrain
  • South Africa
  • Egypt
  • Nigeria
  • Australia
  • New Zealand
  • Singapore
  • Malaysia
  • Indonesia
  • Thailand
  • Vietnam
  • South Korea
  • Japan
  • Brazil