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Duplex 2304 Threaded Rods Manufacturer & Exporter in India

Explore Duplex 2304 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.

⚡

800

Typical tensile strength around 800 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 Duplex 2304 Threaded Rods?

Duplex 2304 threaded rods are high-strength, corrosion-resistant fasteners manufactured from UNS S32304 duplex stainless steel. This alloy features a balanced dual-phase microstructure of austenite and ferrite, delivering superior mechanical properties and enhanced resistance to stress corrosion cracking compared to standard austenitic grades like 304 or 316.

Duplex 2304 threaded rods are specified for use in chloride-rich and mildly acidic environments where both strength and corrosion resistance are critical. They are widely used in chemical processing, water treatment, marine, and structural applications, conforming to ASTM A479 and EN 10088-3 standards for bar and rod products.

Quick Specifications

MaterialDuplex 2304
UNS NumberS32304
DIN Number1.4362
Material StandardASTM A479
Threaded Rod Standard (Metric)DIN 976-1 / ISO 898-1
Threaded Rod Standard (Inch)ASME B18.31.3
Thread FormISO Metric / UNC / UNF
Diameter RangeM6-M64 / ¼"-2½"
Tensile Strength600 MPa (87 ksi) min
Yield Strength400 MPa (58 ksi) min
HardnessMax 25 HRC / 240 HB
? All material certified by NABL-accredited laboratory. PMI and ferrite content verification available on request.

Complete the Fastener Set

Other Duplex 2304 Fastener Products Available from RealBolt

RealBolt also manufactures the complete Duplex 2304 fastener range from certified duplex stainless steel bar stock, including Duplex 2304 Bolts, Duplex 2304 Nuts, Duplex 2304 Screws, Duplex 2304 Washers, and Duplex 2304 Studs. All Duplex 2304 fastener types are produced to ASTM with full EN 10204 MTC 3.1/3.2 documentation.
Duplex 2304 Bolts
Duplex 2304 Nuts
Duplex 2304 Screws
Duplex 2304 Washers
Duplex 2304 Studs

Technical Data

Duplex 2304 Threaded Rods Dimensions, Sizes & Thread Standards

Duplex 2304 Threaded Rods are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 976-1 (metric) and ASME B18.31.3 (inch). Custom cut lengths available in 10mm increments. Right-hand and left-hand threads supplied on request. All Duplex 2304 threaded rods dimensions are verified against applicable DIN, ISO, and ASME

Threaded Rod Dimensions - Metric (DIN 976-1)

Size (M)Pitch (mm)Rod Diameter (mm)Standard Length (mm)Max Length (mm)
M61.06.010003000
M81.258.010003000
M101.510.010003000
M121.7512.010003000
M162.016.010003000
M202.520.010003000
M243.024.010003000
M303.530.010003000
M364.036.010003000
M424.542.010003000
M485.048.010003000
M565.556.010003000
M646.064.010003000

Dimensional & Material Standards

StandardCoversThread
DIN 976-1Threaded rods, all-threadMetric
ISO 898-1Mechanical propertiesMetric
ASME B18.31.3Threaded rods, inchUNC/UNF
EN 10088-3Stainless steel rodsMetric
Material StandardRequirement
ASTM A479Bar/rod - UNS S32304
ASTM A276General bar/rod
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

Duplex 2304 Chemical Composition

Duplex 2304 Threaded Rods are produced from a ferritic-austenitic steel with chromium (21–23%), molybdenum (3–3.5%), and nitrogen (0.14–0.20%) controlled per ASTM. Nitrogen is the critical alloying element: it simultaneously raises PREN to ≥ 35 for chloride pitting resistance and strengthens the austenite phase to achieve 450 MPa minimum yield — twice that of SS 316L.

Chemical Composition per ASTM A479

ElementComposition (%)
Chromium (Cr)21.5-24.5
Nickel (Ni)3.0-5.5
Molybdenum (Mo)0.05-0.6
Nitrogen (N)0.05-0.2
Manganese (Mn)2.5 max
Silicon (Si)1.0 max
Carbon (C)0.03 max
Phosphorus (P)0.04 max
Sulphur (S)0.015 max
Iron (Fe)Balance
? All heats verified by NABL-accredited spectrometry. Ferrite content and PMI available on request.

Why Duplex 2304 Alloy Composition Matters for Threaded Rods

Cr (21.5–24.5%) — Pitting & Crevice Resistance
High chromium content gives Duplex 2304 threaded rods a PREN of 24–26, providing strong resistance to pitting and crevice corrosion in chloride-bearing environments, outperforming 304/316 stainless steel.
N (0.05–0.2%) — Strength & SCC Resistance
Nitrogen addition increases yield strength and enhances resistance to stress corrosion cracking, making Duplex 2304 suitable for threaded rod applications in water treatment and chemical plants.
Balanced Duplex Structure
The dual-phase (austenite/ferrite) microstructure ensures high mechanical strength and toughness, even at low temperatures, while maintaining good weldability for custom rod assemblies.

Fastener Performance

Duplex 2304 Threaded Rods Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for Duplex 2304 Threaded Rods per ASTM. Duplex 2304 threaded rods achieve 800 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)
M12806428
M1618014456
M2035028088
M24600480127
M301200960205
M3621001680295
M4232002560410
M4847003760555
?? 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

Duplex 2304 Threaded Rods Applications — Industries & End Uses

Duplex 2304 Threaded Rods from RealBolt are specified across offshore platforms, desalination, pulp and paper, and chemical processing where excellent corrosion resistance and 800 MPa tensile strength are required for reliable fastener performance. Click each industry below for detailed application examples.
Duplex 2304 threaded rods are widely used in water treatment plants, desalination facilities, and municipal waterworks for pipe supports, tank connections, and equipment anchoring due to their superior resistance to chloride-induced corrosion and high mechanical strength.
Threaded rods for chemical reactor supports, process piping hangers, and equipment mounting in environments containing organic acids, chlorides, and mild reducing agents where 316/316L is insufficient.
All-thread rods for structural connections, cable tray supports, and equipment mounting in marine terminals, shipyards, and offshore platforms where resistance to pitting and crevice corrosion is essential.
Used for hygienic equipment mounting, conveyor supports, and process line anchoring in food processing plants, breweries, and dairies where both corrosion resistance and mechanical strength are required.

Duplex 2304 Threaded Rods Standards & International Certifications

Duplex 2304 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 Duplex 2304 Threaded Rods from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified Duplex 2304 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.
022-6743-7972
+91 90226 36025
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Answers for Buyers

Duplex 2304 Threaded Rods — Frequently Asked Questions

Browse expert answers to common questions about Duplex 2304 Threaded Rods from RealBolt — covering PREN ≥ 35, NACE MR0175, ASTM A182 F60, sigma-phase limits, sizes, and EN 10204 3.1/3.2 documentation. Contact our technical team directly for project-specific guidance on Duplex 2304 threaded rods selection and pricing.
Duplex 2304 threaded rods are supplied to DIN 976-1 (metric all-thread), ISO 898-1 (mechanical properties), and ASME B18.31.3 (inch series). Custom thread forms such as BSW, BSF, and left-hand threads are available on request. All rods are manufactured from ASTM A479 or EN 10088-3 certified bar stock.
Use a molybdenum-based or PTFE anti-seize compound (such as Molykote 1000 or Loctite LB 8014) on threads and nut faces to prevent galling. Avoid copper-based anti-seize on duplex stainless steel to prevent galvanic corrosion. Lubricated torque values should be reduced by 20% compared to dry assembly.
Yes – Duplex 2304 offers excellent resistance to pitting and crevice corrosion in seawater and marine atmospheres, outperforming 304/316 stainless steel. It is suitable for splash zone, submerged, and coastal structural applications, provided the chloride content is moderate and temperatures remain below 250°C.
No formal MOQ for standard sizes (M10-M36) held in stock – single rods can be supplied for urgent maintenance. Custom diameters or cut lengths have a 10 kg minimum. Price breaks are available at 25, 100, and 250 rods per order.

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