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Inconel 601 Studs Manufacturer & Exporter in India

Explore Inconel 601 Studs 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 601 Studs?

Inconel 601 studs are nickel-chromium-aluminium alloy fasteners manufactured from UNS N06601 bar stock conforming to ASTM B166. The alloy’s exceptional oxidation resistance is derived from its aluminium content (1.0-1.7%), which forms a tightly adherent alumina scale that protects the base metal at temperatures up to 1200°C under cyclic thermal conditions.

With a chromium content of 21.0-25.0% and a nickel base of 58.0-63.0%, Inconel 601 studs maintain structural integrity in high-temperature furnace, combustion, and heat-treatment environments where standard stainless steel fasteners fail through oxidation and creep. These studs are widely specified for industrial furnace construction, thermal processing equipment, and petrochemical reformer applications requiring long-term elevated-temperature performance.

Quick Specifications

MaterialInconel 601
UNS NumberN06601
DIN Number2.4851
Material StandardASTM B166
Stud Standard (Metric)DIN 976-1 / ISO 888
Stud Standard (Inch)ASME B18.31.2 / ASME B16.5
Thread FormISO Metric / UNC / UNF
Diameter RangeM6-M100 / ¼"-4"
Tensile Strength655 MPa (95 ksi) min
Yield Strength240 MPa (35 ksi) min
HardnessMax 35 HRC / 200 HB
? All material certified by NABL-accredited laboratory. PMI available on request.

Complete the Fastener Set

Other Inconel 601 Fastener Products Available from RealBolt

RealBolt also manufactures the complete Inconel 601 fastener range from certified nickel-chromium superalloy bar stock, including Inconel 601 Bolts, Inconel 601 Nuts, Inconel 601 Screws, Inconel 601 Washers, and Inconel 601 Threaded Rods. All Inconel 601 fastener types are produced to ASTM with full EN 10204 MTC 3.1/3.2 documentation.
Inconel 601 Bolts
Inconel 601 Nuts
Inconel 601 Screws
Inconel 601 Washers
Inconel 601 Threaded Rods

Technical Data

Inconel 601 Studs Dimensions, Sizes & Thread Standards

Inconel 601 Studs are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 976-1 (metric studs) / ISO 888. Custom lengths in 5mm increments. Inch dimensions available per ASME B18.31.2 and ASME B16.5 for flange stud bolt sets. All Inconel 601 studs dimensions conform to applicable DIN, ISO, and ASME B18 standards.

Stud Bolt Dimensions - Metric (DIN 976-1 / ISO 888)

Size (M)Pitch (mm)Thread Length (mm)Min L (mm)Max L (mm)Tolerance
M61.018202006g
M81.2522252506g
M101.526303006g
M121.7530354006g
M162.038455006g
M202.546556006g
M243.054657006g
M303.566808006g
M364.07810010006g
M424.59012012006g
M485.010214015006g
M565.511816018006g
M646.013418020006g
M726.015020020006g
M806.016622025006g
M1006.020626030006g

Dimensional & Material Standards

StandardCoversThread
DIN 976-1Metric stud bolts, full threadMetric
ISO 888Bolts and studs, generalMetric
ASME B18.31.2Continuous thread studsUNC/UNF
ASME B16.5Stud bolts for pipe flangesUNC
MSS SP-75High-pressure stud boltsUNC
ASME B1.1Unified inch screw threadsUNC/UNF
ISO 261ISO general purpose metric threadsMetric
Material StandardRequirement
ASTM B166Bar/rod - UNS N06601
ASTM B168Plate/sheet - UNS N06601
ASTM F467Fastener nut mechanical
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

Inconel 601 Chemical Composition

Inconel 601 Studs 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 B166

ElementComposition (%)
Nickel (Ni)58.0-63.0%
Chromium (Cr)21.0-25.0%
Iron (Fe)Balance (approx. 14.0%)
Aluminium (Al)1.0-1.7%
Carbon (C)0.10% max
Manganese (Mn)1.0% max
Silicon (Si)0.50% max
Sulphur (S)0.015% max
Copper (Cu)1.0% max
? All heats verified by NABL-accredited spectrometry. PMI available on request.

Why Inconel 601 Alloy Composition Matters for Studs

Al (1.0–1.7%) — Oxidation Resistance to 1200°C
Aluminium forms a dense, self-healing alumina (Al2O3) scale on the stud surface during high-temperature exposure. This scale acts as a diffusion barrier against oxygen ingress, allowing Inconel 601 studs to survive cyclic thermal environments that destroy standard austenitic stainless steel fasteners within weeks.
Cr (21–25%) — Hot Corrosion & Carburisation Resistance
The elevated chromium content provides a secondary chromia (Cr2O3) protective layer, giving Inconel 601 studs outstanding resistance to carburisation, sulphidation, and hot corrosion in furnace atmospheres, combustion gases, and reformer tube connections where carbon activity is high.
Ni (58–63%) — Creep Strength & Thermal Stability
The high nickel base maintains solid-solution strength at elevated temperatures, resisting creep relaxation in stud connections subjected to sustained clamping loads above 800°C. This is critical for furnace door hinges, radiant tube supports, and reformer manifold flanges where bolt load retention over time is essential.

Fastener Performance

Inconel 601 Studs Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for Inconel 601 Studs per ASTM. Inconel 601 studs 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 601 Studs

Stud SizeDry (Nm)Lubricated (Nm)Clamp Load (kN)
M12725826
M1617514063
M20345276101
M24600480146
M301200960232
M3620801664337
M4233202656464
M4849203936610
?? 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 alloys - galvanic incompatibility accelerates thread corrosion at elevated temperatures.

Industry Applications

Inconel 601 Studs Applications — Industries & End Uses

Inconel 601 Studs 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 601 studs are the standard fastener for industrial furnace shell construction, door frame assemblies, radiant tube support brackets, and muffle furnace closures. The alumina-forming alloy resists oxidation at continuous service temperatures up to 1200°C, outlasting stainless steel studs by a factor of five or more in cyclic thermal environments.
Stud bolt sets for hydrogen reformer tube manifold flanges, fired heater convection section connections, and catalytic cracker regenerator nozzles. Inconel 601 maintains clamping load integrity under the combined effects of high temperature, thermal cycling, and carburising atmospheres where 310 stainless steel fasteners suffer accelerated creep relaxation.
Inconel 601 studs are specified for gas turbine combustion liner attachment, transition duct flanges, and waste heat recovery unit (WHRU) duct connections. The alloy’s resistance to hot corrosion from sulphur-bearing combustion gases and its retention of mechanical properties above 900°C make it the preferred choice over standard austenitic grades.
Stud fasteners for sintering furnace retort closures, continuous belt furnace side panels, vacuum furnace hot zone assemblies, and atmosphere-controlled annealing furnace doors. Inconel 601 studs resist both oxidising and mildly reducing atmospheres, providing reliable sealing force retention across thousands of thermal cycles.

Inconel 601 Studs Standards & International Certifications

Inconel 601 Studs 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 938 DIN 939 DIN 976-1 ASME B18.31.2 IS 1364 IS 1367
Certifications
ISO 9001:2015NABL LabPED 2014/68/EUMTC 3.1 / 3.2EN 10204

Buy Inconel 601 Studs from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified Inconel 601 Studs — 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 601 Studs — Frequently Asked Questions

Browse expert answers to common questions about Inconel 601 Studs 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 601 studs selection and pricing.
Inconel 601 studs are manufactured to DIN 976-1 (metric full-thread and double-end studs), ISO 888, and ASME B18.31.2 (continuous thread studs, inch). For flange applications, stud bolt sets are supplied per ASME B16.5 (Class 150-2500) and MSS SP-75 for high-pressure service. Custom configurations including tap-end studs, double-end studs with unequal thread lengths, and stud bolts with reduced shanks are available on request with a 15 working day lead time.
Inconel 601 studs can be used continuously up to 1200°C in oxidising atmospheres and up to approximately 1000°C in mildly reducing or carburising environments. The alumina scale formed by the alloy’s aluminium content provides self-healing oxidation protection under cyclic thermal conditions. For applications above 1000°C in reducing atmospheres, consult our engineering team – Inconel 601 may require protective atmosphere control or alternative alloy selection depending on the specific gas composition.
Yes, with qualification. Inconel 601 offers good resistance to carburisation at temperatures up to approximately 950°C due to its high chromium and aluminium content forming a protective oxide barrier. However, in severely carburising atmospheres (carbon activity close to 1.0) above 1000°C, carbon ingress can occur over extended exposure periods. For such conditions, specify Inconel 601 studs with a minimum wall thickness and plan for periodic inspection. Our team can advise on suitable inspection intervals based on your specific furnace atmosphere and cycle profile.
Inconel 601 studs are suitable for vacuum furnace hot zone assemblies at temperatures up to approximately 1100°C. In high-vacuum environments, the aluminium content can volatilise slightly at extreme temperatures, but this does not significantly affect mechanical performance within normal hot zone operating ranges. For ultra-high vacuum applications above 1150°C, consult our engineering team regarding alloy selection. All studs supplied for vacuum service are cleaned and packaged to prevent contamination of the furnace atmosphere.

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
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