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Inconel 800 Threaded Rods Manufacturer & Exporter in India

Explore Inconel 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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-200

Min Temp

1200

Max Temp

🌡

1200

Suitable for continuous service up to approximately 1200°C under typical operating conditions.

⚡

760

Typical tensile strength around 760 MPa depending on product form and heat treatment.

🛡

Excellent

Excellent corrosion resistance in a wide range of industrial environments.

⚖

8.4

Typical density is approximately 8.4 g/cm³.

Product Overview

What are Inconel 800 Threaded Rods?

Inconel 800 threaded rods are nickel-iron-chromium alloy fasteners manufactured from UNS N08800 bar stock conforming to ASTM B408. The alloy’s balanced composition of nickel (30-35%), chromium (19-23%), and iron (balance) delivers exceptional resistance to oxidation, carburization, and high-temperature creep, making it a preferred choice for elevated-temperature structural applications.

Inconel 800 threaded rods maintain structural integrity at continuous service temperatures up to 815°C and are widely specified under ASME Section VIII and NACE MR0175 for heat exchanger tie rods, furnace internals, and petrochemical process equipment. Their resistance to stress corrosion cracking in chloride-bearing environments and polythionic acid attack sets them apart from standard austenitic stainless steel alternatives.

Quick Specifications

MaterialInconel 800
UNS NumberN08800
DIN Number1.4876
Material StandardASTM B408
Threaded Rod Standard (Metric)DIN 975 / DIN 976 / ISO 888
Threaded Rod Standard (Inch)ASME B18.31.3
Thread FormISO Metric / UNC / UNF
Diameter RangeM6-M100 / ¼"-4"
Tensile Strength517 MPa (75 ksi) min
Yield Strength207 MPa (30 ksi) min
HardnessMax 35 HRC / 192 HB
? All material certified by NABL-accredited laboratory. PMI available on request.

Complete the Fastener Set

Other Inconel 800 Fastener Products Available from RealBolt

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

Technical Data

Inconel 800 Threaded Rods Dimensions, Sizes & Thread Standards

Inconel 800 Threaded Rods are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 975 (full thread rod) / DIN 976 (stud bolt rod) / ISO 888. Custom lengths available. Inch dimensions per ASME B18.31.3. All Inconel 800 threaded rods dimensions are verified against applicable DIN, ISO, and

Threaded Rod Dimensions - Metric (DIN 975 / ISO 888)

Size (M)Pitch (mm)Core Dia (mm)ToleranceMin L (mm)Max L (mm)
M61.04.776g1001000
M81.256.476g1001000
M101.58.166g1002000
M121.759.856g1002000
M162.013.556g1003000
M202.516.936g1003000
M243.020.326g1003000
M303.525.716g2004000
M364.030.736g2004000
M424.535.756g2005000
M485.040.786g2005000
M565.547.806g3006000
M646.054.646g3006000
M726.062.646g3006000
M806.070.646g3006000
M1006.090.646g5006000

Dimensional & Material Standards

StandardCoversThread
DIN 975Fully threaded rod, standard lengthsMetric
DIN 976-1Stud bolt threaded rodMetric
ISO 888Bolts, screws, studs - nominal lengthsMetric
ASME B18.31.3Continuous threaded rodUNC/UNF
ASME B16.5Stud bolts for flangesUNC
MSS SP-75High-pressure stud bolt rodUNC
Material StandardRequirement
ASTM B408Bar/rod - UNS N08800
ASTM A193Alloy fastener mechanical properties
NACE MR0175Sour service hardness compliance
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

Inconel 800 Chemical Composition

Inconel 800 Threaded Rods are manufactured from a nickel-chromium superalloy containing nickel (72% min), chromium (14–17%), and iron (6–10%). Each element is precisely controlled per ASTM — nickel provides chloride SCC immunity, chromium drives high-temperature oxidation resistance, and iron balances structural stability and alloy cost.

Chemical Composition per ASTM B408

ElementComposition (%)
Nickel (Ni)30.0-35.0%
Chromium (Cr)19.0-23.0%
Iron (Fe)Balance (min 39.5%)
Carbon (C)0.10% max
Manganese (Mn)1.50% max
Silicon (Si)1.00% max
Copper (Cu)0.75% max
Aluminium (Al)0.15-0.60%
Titanium (Ti)0.15-0.60%
Sulphur (S)0.015% max
? All heats verified by NABL-accredited spectrometry. PMI available on request.

Why Inconel 800 Alloy Composition Matters for Threaded Rods

Ni (30–35%) + Cr (19–23%) — Oxidation & Carburization Resistance
The nickel-chromium balance in Inconel 800 forms a stable, adherent chromium oxide scale at elevated temperatures, preventing oxidation and carburization of threaded rod surfaces in furnace atmospheres and high-temperature process gas environments up to 815°C continuous service.
Al + Ti (0.15–0.60% each) — Creep Strength Contribution
Aluminium and titanium additions promote the formation of fine gamma-prime precipitates during service, contributing to creep resistance and long-term dimensional stability in threaded rod assemblies subjected to sustained tensile loads at elevated temperatures.
Iron Balance — Cost-Effective High-Temperature Performance
The high iron content (min 39.5%) distinguishes Inconel 800 from higher-nickel alloys, providing a cost-effective solution for applications where the extreme corrosion resistance of alloy 625 is not required but high-temperature strength and oxidation resistance are essential.

Fastener Performance

Inconel 800 Threaded Rods Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for Inconel 800 Threaded Rods per ASTM. Inconel 800 threaded rods achieve 760 MPa tensile strength, with hardness, yield, and elongation values verified by NABL-accredited testing and reported in the EN 10204 MTC.

Tightening Torque Reference - Inconel 800 Threaded Rods

Rod SizeDry (Nm)Lubricated (Nm)Clamp Load (kN)
M12524219
M1612510046
M2024819873
M24430344106
M30860688168
M3615001200244
M4223901912336
M4835502840441
?? Anti-galling: Use nickel-based anti-seize (Molykote P-37 or equivalent). Lubricated values assume K=0.15. Never use copper-based anti-seize on nickel-iron alloys - galvanic incompatibility accelerates thread corrosion at elevated temperatures.

Industry Applications

Inconel 800 Threaded Rods Applications — Industries & End Uses

Inconel 800 Threaded Rods from RealBolt are specified across oil and gas, aerospace, chemical processing, and power generation where excellent corrosion resistance and 760 MPa tensile strength are required for reliable fastener performance. Click each industry below for detailed application examples.
Inconel 800 threaded rods are the standard specification for furnace muffle tie rods, radiant tube support assemblies, and heat treatment basket hardware operating continuously above 600°C. The alloy’s resistance to carburization and oxidizing atmospheres prevents thread degradation and seizure during thermal cycling, ensuring reliable disassembly during maintenance shutdowns.
Threaded rods for heat exchanger shell-and-tube tie rod assemblies, reactor vessel internal support structures, and reformer tube hanger systems in hydrogen-rich and sulphur-bearing process streams. Inconel 800 resists polythionic acid stress corrosion cracking during shutdown conditions – a critical failure mode for sensitized austenitic stainless steel alternatives.
Specified for superheater tube support rods, steam header hanger assemblies, and boiler casing tie rods in coal-fired and combined-cycle power plants. Inconel 800 maintains adequate creep strength at metal temperatures up to 815°C, meeting ASME Section I and Section VIII design requirements for elevated-temperature pressure vessel internals.
Threaded rod assemblies for agitator shaft tie rods, column packing support grids, and heat exchanger floating head connections in nitric acid, caustic soda, and mixed organic acid service. Inconel 800 resists intergranular corrosion and stress corrosion cracking in environments that rapidly degrade standard 304/316 stainless steel fasteners.

Inconel 800 Threaded Rods Standards & International Certifications

Inconel 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 9001:2015NACE MR0175NABL LabPED 2014/68/EUMTC 3.1 / 3.2

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

Partner with RealBolt — India’s leading manufacturer of certified Inconel 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.
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Answers for Buyers

Inconel 800 Threaded Rods — Frequently Asked Questions

Browse expert answers to common questions about Inconel 800 Threaded Rods from RealBolt — covering ASTM standards, max service temperature, corrosion resistance, available sizes, lead times, and MTC certification. Contact our technical team directly for project-specific guidance on Inconel 800 threaded rods selection and pricing.
Inconel 800 threaded rods are manufactured to DIN 975 (fully threaded rod in standard 1-metre and 2-metre lengths), DIN 976-1 (stud bolt rod with defined thread lengths at each end), and ISO 888 for nominal length tolerances. Inch-series rods are produced per ASME B18.31.3 in UNC and UNF thread forms. Custom lengths up to 6000mm are available in metric sizes, and special thread forms including BSW, BSPP, and Whitworth are available on request with a 15 working day lead time.
Inconel 800 threaded rods are rated for continuous service up to 815°C in oxidizing and mildly carburizing atmospheres. For intermittent service or cyclic thermal applications, peak temperatures up to 900°C are tolerable provided adequate cooling intervals are maintained. For applications requiring continuous service above 815°C, Inconel 800H (UNS N08810) or Inconel 800HT (UNS N08811) with controlled carbon and grain size should be specified – both available from stock.
Yes – Inconel 800 is inherently resistant to polythionic acid stress corrosion cracking (PTASCC), which occurs in sensitized austenitic stainless steels during refinery shutdowns when sulphur-bearing deposits react with moisture and oxygen. This makes Inconel 800 threaded rods the preferred choice for heat exchanger tie rod assemblies and reactor internal support structures in hydroprocessing and catalytic reforming units where PTASCC is a documented failure mode.
Standard metric sizes from M12 to M36 in 1-metre and 2-metre lengths are held ex-stock with no formal minimum order quantity – single lengths are supplied for maintenance and repair requirements. Custom lengths and diameters above M36 carry a minimum order of 10 kg. Quantity price breaks apply at 50 kg, 200 kg, and 500 kg. Urgent requirements for standard sizes can typically be dispatched within 24-48 hours from our Mumbai warehouse.

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