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Incoloy 800 Threaded Rods Manufacturer & Exporter in India

Explore Incoloy 800 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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-196

Min Temp

870

Max Temp

🌡

870

Suitable for continuous service up to approximately 870°C under typical operating conditions.

⚡

620

Typical tensile strength around 620 MPa depending on product form and heat treatment.

🛡

Very Good

Very Good corrosion resistance in a wide range of industrial environments.

⚖

8

Typical density is approximately 8.0 g/cm³.

Product Overview

What are Incoloy 800 Threaded Rods?

Incoloy 800 threaded rods are high-temperature nickel-iron-chromium alloy fasteners manufactured from UNS N08800 bar stock in accordance with ASTM B408. Designed for exceptional strength and oxidation resistance up to 1100°C, these rods maintain structural integrity in demanding thermal cycling and carburizing environments. Their balanced composition of nickel (30-35%), chromium (19-23%), and iron (39.5% min) ensures excellent resistance to chloride stress corrosion cracking and intergranular attack after exposure to elevated temperatures.

Incoloy 800 threaded rods are widely specified for furnace hardware, petrochemical heater tube supports, and heat exchanger tie rods, where standard stainless steels fail due to embrittlement or scaling. All rods are supplied with full traceability and EN 10204 3.1 certification for critical service applications.

Quick Specifications

MaterialIncoloy 800
UNS NumberN08800
DIN Number1.4876
Material StandardASTM B408
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 Strength450 MPa (65 ksi) min
Yield Strength205 MPa (30 ksi) min
HardnessMax 85 HRB / 200 HB
? All material certified by NABL-accredited laboratory. PMI and intergranular corrosion test reports available on request.

Complete the Fastener Set

Other Incoloy 800 Fastener Products Available from RealBolt

RealBolt also manufactures the complete Incoloy 800 fastener range from certified iron-nickel-chromium alloy bar stock, including Incoloy 800 Bolts, Incoloy 800 Nuts, Incoloy 800 Screws, Incoloy 800 Washers, and Incoloy 800 Studs. All Incoloy 800 fastener types are produced to ASTM with full EN 10204 MTC 3.1/3.2 documentation.
Incoloy 800 Bolts
Incoloy 800 Nuts
Incoloy 800 Screws
Incoloy 800 Washers
Incoloy 800 Studs

Technical Data

Incoloy 800 Threaded Rods Dimensions, Sizes & Thread Standards

Incoloy 800 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 up to 6 meters. Inch and metric threads available. All Incoloy 800 threaded rods dimensions are verified against applicable DIN, ISO, and

Threaded Rod Dimensions - Metric (DIN 975)

Size (M)Pitch (mm)Core Dia (mm)Length Range (mm)
M61.04.8100-2000
M81.256.6100-3000
M101.58.2100-3000
M121.7510.0100-4000
M162.013.6100-6000
M202.517.0100-6000
M243.020.4100-6000
M303.526.4200-6000
M364.032.4200-6000
M424.538.4200-6000
M485.044.4200-6000
M565.552.2300-6000
M646.058.2300-6000

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 B408Bar/rod - UNS N08800
ASTM F468Fastener mechanical
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

Incoloy 800 Chemical Composition

Incoloy 800 Threaded Rods are produced from an iron-nickel-chromium alloy with controlled nickel (30–46%), chromium (19–23%), and molybdenum content per ASTM. Nickel and chromium together resist high-temperature oxidation to 1093°C in 800H grades, while molybdenum and copper additions in Incoloy 825 provide sulfuric and phosphoric acid resistance.

Chemical Composition per ASTM B408

ElementComposition (%)
Nickel (Ni)30.0-35.0%
Chromium (Cr)19.0-23.0%
Iron (Fe)39.5% min
Carbon (C)0.10% max
Aluminium (Al)0.15-0.60%
Titanium (Ti)0.15-0.60%
Manganese (Mn)1.5% max
Silicon (Si)1.0% max
Copper (Cu)0.75% max
Sulfur (S)0.015% max
? All heats verified by NABL-accredited spectrometry. PMI and grain boundary corrosion test available on request.

Why Incoloy 800 Alloy Composition Matters for Threaded Rods

High Nickel Content (30–35%) — Thermal Stability
Nickel ensures Incoloy 800 threaded rods retain ductility and resist embrittlement after long-term exposure to temperatures up to 1100°C, making them ideal for furnace and heater applications.
Chromium (19–23%) — Oxidation & Carburization Resistance
Chromium provides a protective oxide layer, preventing scaling and carburization in high-temperature atmospheres, which is critical for threaded rods in petrochemical and power plant service.
Al + Ti Stabilization — Intergranular Corrosion Resistance
Aluminium and titanium additions stabilize the alloy against sensitization, ensuring resistance to intergranular attack after welding or thermal cycling, essential for structural fasteners in heat exchangers and reactors.

Fastener Performance

Incoloy 800 Threaded Rods Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for Incoloy 800 Threaded Rods per ASTM. Incoloy 800 threaded rods achieve 620 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)
M12554418
M1613510832
M2027021650
M2447037672
M30940752116
M3616201296168
M4225802064230
M4838203056320
?? Anti-galling: Use nickel-based anti-seize (Molykote P-37 or equivalent). Lubricated values assume K=0.15. Avoid copper-based anti-seize on Incoloy alloys.

Industry Applications

Incoloy 800 Threaded Rods Applications — Industries & End Uses

Incoloy 800 Threaded Rods from RealBolt are specified across petrochemical furnaces, chemical processing, nuclear, and power generation where very good corrosion resistance and 620 MPa tensile strength are required for reliable fastener performance. Click each industry below for detailed application examples.
Incoloy 800 threaded rods are the industry standard for tube sheet tie rods, support hangers, and structural fasteners in ethylene cracking furnaces, reformers, and fired heaters. Their resistance to carburization and oxidation at high temperatures ensures long service life in radiant and convection sections.
Used for tie rods and support hardware in superheater assemblies, HRSG ductwork, and boiler internals where thermal cycling and high-temperature corrosion preclude the use of stainless steel. Incoloy 800 maintains mechanical properties after repeated heating and cooling.
Threaded rods for channel covers, floating heads, and baffle supports in heat exchangers and reactors handling nitric acid, urea, and ammonium nitrate. The alloy’s resistance to stress corrosion cracking and intergranular attack is critical for long-term reliability.
Specified for threaded rods in annealing furnaces, kilns, and heat treatment baskets where exposure to oxidizing and reducing atmospheres at elevated temperatures is routine. Incoloy 800 resists scaling and maintains strength.

Incoloy 800 Threaded Rods Standards & International Certifications

Incoloy 800 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 3.1/3.2, PMI (XRF), NACE MR0175/ISO 15156, and NABL-accredited lab reports — available on request for all orders.
Standards
DIN 975 DIN 976-1 ASME B18.31.2 IS 1367 IS 1364
Certifications
ISO 9001:2015PED 2014/68/EUNABL LabEN 10204 3.1 / 3.2

Buy Incoloy 800 Threaded Rods from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified Incoloy 800 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

Incoloy 800 Threaded Rods — Frequently Asked Questions

Browse expert answers to common questions about Incoloy 800 Threaded Rods from RealBolt — covering grade differences, ASTM B408/B425 standards, oxidation limits, acid resistance, sizes, and MTC documentation. Contact our technical team directly for project-specific guidance on Incoloy 800 threaded rods selection and pricing.
Incoloy 800 threaded rods are available to DIN 975 (full thread, metric), DIN 976 (studs), and ASME B18.31.3 (inch series). Threads can be supplied as ISO metric coarse/fine, UNC, UNF, or custom pitch. Special threads such as BSW, BSF, and ACME are available on request with short lead times.
Always use a nickel-based anti-seize compound (such as Molykote P-37 or Jet-Lube Pure Nickel) on Incoloy 800 threads to prevent galling and facilitate disassembly after high-temperature service. Avoid copper-based anti-seize, as it can cause galvanic corrosion with nickel alloys. Lubricated torque values should be reduced by 20% compared to dry assembly.
Yes – Incoloy 800 threaded rods are engineered for continuous service up to 1100°C (2010°F) and maintain mechanical strength and oxidation resistance in thermal cycling environments. They are widely used in furnace, reformer, and superheater assemblies where stainless steel would fail due to scaling or embrittlement.
There is no formal MOQ for standard sizes (M10-M36) available ex-stock; single rods can be supplied for urgent maintenance. Custom diameters or cut-to-length rods may require a 10 kg minimum. Bulk price breaks are available at 25, 100, and 500 pieces.

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