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SS 2205 (Duplex) Threaded Rods Manufacturer & Exporter in India

Explore SS 2205 (Duplex) 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.

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7.8

Typical density is approximately 7.8 g/cm³.

Product Overview

What are SS 2205 (Duplex) Threaded Rods?

SS 2205 (Duplex) threaded rods are high-strength, corrosion-resistant fasteners manufactured from duplex stainless steel UNS S32205 bar stock, conforming to ASTM A276 and ASTM A479. The duplex microstructure, with approximately equal proportions of austenite and ferrite, delivers superior mechanical strength and outstanding resistance to chloride-induced pitting and stress corrosion cracking compared to standard austenitic grades like 316.

With a PREN (Pitting Resistance Equivalent Number) of 34-35, SS 2205 threaded rods are widely specified for bolted joints in marine, chemical, and oil & gas applications where both high strength and long-term corrosion resistance are critical. They are the industry standard for offshore platforms, desalination plants, and aggressive chemical process environments.

Quick Specifications

MaterialDuplex Stainless Steel 2205
UNS NumberS32205
DIN Number1.4462
Material StandardASTM A276 / ASTM A479
Threaded Rod Standard (Metric)DIN 975 / DIN 976 / ISO 898-1
Threaded Rod Standard (Inch)ASME B18.31.3
Thread FormISO Metric / UNC / UNF
Diameter RangeM6-M64 / ¼"-2½"
Tensile Strength620 MPa (90 ksi) min
Yield Strength450 MPa (65 ksi) min
HardnessMax 290 HB
? All material certified by NABL-accredited laboratory. PMI and ferrite content verification available on request.

Complete the Fastener Set

Other SS 2205 (Duplex) Fastener Products Available from RealBolt

RealBolt also manufactures the complete SS 2205 (Duplex) fastener range from certified duplex stainless steel bar stock, including SS 2205 (Duplex) Bolts, SS 2205 (Duplex) Nuts, SS 2205 (Duplex) Screws, SS 2205 (Duplex) Washers, and SS 2205 (Duplex) Studs. All SS 2205 (Duplex) fastener types are produced to ASTM with full EN 10204 MTC 3.1/3.2 documentation.
SS 2205 (Duplex) Bolts
SS 2205 (Duplex) Nuts
SS 2205 (Duplex) Screws
SS 2205 (Duplex) Washers
SS 2205 (Duplex) Studs

Technical Data

SS 2205 (Duplex) Threaded Rods Dimensions, Sizes & Thread Standards

SS 2205 (Duplex) Threaded Rods are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 975 (full thread) / DIN 976 (studs) / ISO 898-1. Custom lengths in 10mm increments. Inch dimensions available per ASME B18.31.3. All SS 2205 (Duplex) threaded rods dimensions conform to applicable DIN, ISO, and ASME B18 standards.

Threaded Rod Dimensions - Metric (DIN 975)

Size (M)Pitch (mm)Rod Dia (mm)Standard Length (mm)Custom Length (mm)
M61.06.01000 / 200050-3000
M81.258.01000 / 200050-3000
M101.510.01000 / 200050-3000
M121.7512.01000 / 200050-3000
M162.016.01000 / 200050-3000
M202.520.01000 / 200050-3000
M243.024.01000 / 200050-3000
M303.530.01000 / 200050-3000
M364.036.01000 / 200050-3000
M424.542.01000 / 200050-3000
M485.048.01000 / 200050-3000
M565.556.01000 / 200050-3000
M646.064.01000 / 200050-3000

Dimensional & Material Standards

StandardCoversThread
DIN 975Threaded rods, full threadMetric
DIN 976Stud bolts, double endMetric
ISO 898-1Mechanical propertiesMetric
ASME B18.31.3Threaded rods, inchUNC/UNF
ASME B16.5Stud bolts for flangesUNC
Material StandardRequirement
ASTM A276Bar/rod - UNS S32205
ASTM A479Pressure vessel quality
NACE MR0175Sour service =290 HB
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

SS 2205 (Duplex) Chemical Composition

SS 2205 (Duplex) 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 A276 / A479

ElementComposition (%)
Chromium (Cr)21.0-23.0%
Nickel (Ni)4.5-6.5%
Molybdenum (Mo)2.5-3.5%
Nitrogen (N)0.14-0.20%
Manganese (Mn)2.0% max
Silicon (Si)1.0% max
Carbon (C)0.03% max
Phosphorus (P)0.03% max
Sulphur (S)0.02% max
Iron (Fe)Balance
? All heats verified by NABL-accredited spectrometry. Ferrite content and PMI available on request.

Why SS 2205 (Duplex) Alloy Composition Matters for Threaded Rods

Cr (21–23%) & Mo (2.5–3.5%) — Pitting & Crevice Resistance
The high chromium and molybdenum content gives SS 2205 threaded rods a PREN of 34–35, ensuring excellent resistance to pitting and crevice corrosion in seawater, brine, and chloride-rich environments.
N (0.14–0.20%) — Strength & SCC Resistance
Nitrogen increases yield strength and enhances resistance to chloride stress corrosion cracking, making SS 2205 ideal for high-load, aggressive service conditions.
Balanced Duplex Structure
The dual-phase (austenite/ferrite) microstructure provides double the yield strength of 316L and superior resistance to intergranular corrosion, even after welding or hot working.

Fastener Performance

SS 2205 (Duplex) Threaded Rods Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for SS 2205 (Duplex) Threaded Rods per ASTM. SS 2205 (Duplex) 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)
M12957638
M1623018485
M20460368136
M24800640198
M3016001280315
M3628002240457
M4244003520630
M4866005280850
?? Anti-galling: Use molybdenum-based or PTFE anti-seize. Lubricated values assume K=0.16. Avoid copper-based anti-seize in chloride service.

Industry Applications

SS 2205 (Duplex) Threaded Rods Applications — Industries & End Uses

SS 2205 (Duplex) 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.
SS 2205 (Duplex) threaded rods are the preferred choice for bolted joints in offshore platforms, subsea manifolds, and riser clamps. Their high strength and resistance to chloride pitting make them ideal for splash zone and submerged service, meeting NORSOK and NACE MR0175 requirements for sour gas environments.
Used for structural bolting, pipe supports, and equipment mounting in reverse osmosis (RO) plants, evaporators, and brine concentrators. SS 2205 threaded rods resist crevice corrosion and stress corrosion cracking in high-chloride, high-humidity environments.
Threaded rods for reactor closures, heat exchanger tie rods, and process vessel nozzles in environments containing chlorides, organic acids, and caustics. SS 2205 outperforms 316L in mixed acid and chloride-rich process streams.
Specified for hull penetrations, deck equipment, and engine room assemblies where exposure to seawater and salt spray demands superior corrosion resistance and mechanical strength.

SS 2205 (Duplex) Threaded Rods Standards & International Certifications

SS 2205 (Duplex) 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 SS 2205 (Duplex) Threaded Rods from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified SS 2205 (Duplex) 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

SS 2205 (Duplex) Threaded Rods — Frequently Asked Questions

Browse expert answers to common questions about SS 2205 (Duplex) 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 SS 2205 (Duplex) threaded rods selection and pricing.
SS 2205 (Duplex) threaded rods are available to DIN 975 (full thread), DIN 976 (studs), ISO 898-1 (mechanical properties), and ASME B18.31.3 (inch series). Custom thread forms (UNC, UNF, BSW, BSP) and cut lengths are available on request, typically within 2-3 weeks for non-standard sizes.
Use molybdenum-based or PTFE anti-seize compound (such as Molykote 1000 or Loctite LB 8014) for SS 2205 threaded rods. Apply to threads and nut faces to prevent galling. Avoid copper-based anti-seize in chloride-rich or seawater environments to prevent galvanic corrosion.
Yes – SS 2205 (Duplex) threaded rods have a PREN of 34-35, providing excellent resistance to pitting and crevice corrosion in seawater, brine, and high-chloride environments. They are widely specified for offshore, desalination, and marine structural applications.
No formal MOQ for standard sizes (M10-M36) held ex-stock – we supply from single rods for urgent maintenance. Custom diameters or cut lengths typically require a 10 kg minimum. Quantity price breaks 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