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Nimonic 90 Studs Manufacturer & Exporter in India

Explore Nimonic 90 Studs 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 Nimonic 90 Studs?

Nimonic 90 studs are high-strength nickel-chromium-cobalt alloy fasteners manufactured from UNS N07090 bar stock, conforming to ASTM B637 and BS HR1 standards. Designed for extreme temperature service, these studs offer excellent creep resistance, oxidation stability, and mechanical strength up to 950°C, making them ideal for gas turbine, aerospace, and high-temperature bolted joints.

With a typical tensile strength exceeding 1000 MPa and outstanding fatigue resistance, Nimonic 90 studs are widely specified for turbine casings, exhaust manifolds, and petrochemical reactors where conventional stainless steel fasteners fail due to thermal cycling and oxidation.

Quick Specifications

MaterialNimonic 90
UNS NumberN07090
DIN Number2.4632
Material StandardASTM B637 / BS HR1
Stud Standard (Metric)DIN 976 / ISO 898-1
Stud Standard (Inch)ASME B16.5 / B18.31.2
Thread FormISO Metric / UNC / UNF
Diameter RangeM6-M64 / ¼"-2½"
Tensile Strength1000 MPa (145 ksi) min
Yield Strength620 MPa (90 ksi) min
HardnessMax 38 HRC / 340 HB
? All material certified by NABL-accredited laboratory. PMI and hardness survey available on request.

Complete the Fastener Set

Other Nimonic 90 Fastener Products Available from RealBolt

RealBolt also manufactures the complete Nimonic 90 fastener range from certified nickel-chromium-cobalt superalloy bar stock, including Nimonic 90 Bolts, Nimonic 90 Nuts, Nimonic 90 Screws, Nimonic 90 Washers, and Nimonic 90 Threaded Rods. All Nimonic 90 fastener types are produced to ASTM with full EN 10204 MTC 3.1/3.2 documentation.
Nimonic 90 Bolts
Nimonic 90 Nuts
Nimonic 90 Screws
Nimonic 90 Washers
Nimonic 90 Threaded Rods

Technical Data

Nimonic 90 Studs Dimensions, Sizes & Thread Standards

Nimonic 90 Studs are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 976 (metric full thread) / ASME B16.5 (inch stud bolts). Custom cut lengths available in 5mm increments. Inch sizes per B18.31.2 and B16.5 for flange bolting. All Nimonic 90 studs dimensions conform to applicable DIN, ISO, and ASME B18 standards.

Stud Bolt Dimensions - Metric (DIN 976)

Size (M)Pitch (mm)Thread Length (mm)Min L (mm)Max L (mm)
M61.01820200
M81.252225250
M101.52630300
M121.753035400
M162.03840500
M202.54450600
M243.05460800
M303.566701000
M364.078801200
M424.5901001500
M485.01021201800
M565.51141402000
M646.01261602500

Dimensional & Material Standards

StandardCoversThread
DIN 976Stud bolts, full threadMetric
ASME B16.5Stud bolts for flangesUNC
ASME B18.31.2Continuous thread studsUNC/UNF
ISO 898-1Mechanical propertiesMetric
Material StandardRequirement
ASTM B637Bar/rod - UNS N07090
BS HR1Forging/fastener
AMS 5829High-temp fastener
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

Nimonic 90 Chemical Composition

Nimonic 90 Studs are manufactured from a precipitation-hardened nickel-chromium-cobalt superalloy with titanium and aluminium additions per AMS and BS HR specifications. These elements form the gamma-prime (Ni₃Al,Ti) precipitate phase that delivers creep rupture strength above 700°C — a performance level unachievable with standard nickel or stainless alloys.

Chemical Composition per ASTM B637

ElementComposition (%)
Nickel (Ni)52.0% min
Chromium (Cr)18.0-21.0%
Cobalt (Co)15.0-21.0%
Titanium (Ti)2.0-3.0%
Aluminium (Al)1.0-2.0%
Iron (Fe)1.5% max
Carbon (C)0.13% max
Manganese (Mn)1.0% max
Silicon (Si)1.0% max
Copper (Cu)0.2% max
Zirconium (Zr)0.2% max
Boron (B)0.02% max
? All heats verified by NABL-accredited spectrometry. PMI available on request.

Why Nimonic 90 Alloy Composition Matters for Studs

Co (15–21%) — High-Temperature Strength
Cobalt enhances the alloy’s strength and stability at elevated temperatures, ensuring Nimonic 90 studs retain their load-carrying capacity in turbine and exhaust applications up to 950°C.
Ti + Al (3–5%) — Precipitation Hardening
Titanium and aluminium form gamma prime (?') precipitates, providing exceptional creep and fatigue resistance, critical for stud bolts in cyclic thermal environments.
Low Fe, Mn, Si — Oxidation Resistance
Strict control of iron, manganese, and silicon content ensures superior oxidation and scaling resistance, preventing stud failure in aggressive hot gas streams.

Fastener Performance

Nimonic 90 Studs Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for Nimonic 90 Studs per ASTM. Nimonic 90 studs achieve 620 MPa tensile strength, with hardness, yield, and elongation values verified by NABL-accredited testing and reported in the EN 10204 MTC.

Stud SizeDry (Nm)Lubricated (Nm)Clamp Load (kN)
M121209638
M1629523680
M20590472128
M241020816185
M3020401632295
M3635502840430
M4256504520590
M4884006720780
?? Anti-galling: Use nickel-based anti-seize (Molykote P-37 or equivalent). Lubricated values assume K=0.15. Avoid copper-based anti-seize on nickel alloys.

Industry Applications

Nimonic 90 Studs Applications — Industries & End Uses

Nimonic 90 Studs from RealBolt are specified across aerospace gas turbines, power generation, and high-temperature furnaces where very good corrosion resistance and 620 MPa tensile strength are required for reliable fastener performance. Click each industry below for detailed application examples.
Nimonic 90 studs are the industry standard for turbine casing joints, exhaust manifolds, and combustor assemblies in gas and steam turbines. Their high-temperature strength and oxidation resistance ensure reliable bolting in cyclic thermal environments.
Used in jet engine afterburner assemblies, turbine flange joints, and exhaust nozzle connections, Nimonic 90 studs withstand extreme heat and vibration, meeting AMS 5829 and Rolls-Royce MSRR requirements.
Stud bolts for high-temperature reactors, reformer tube sheets, and pressure vessel closures where resistance to carburisation, oxidation, and thermal shock is critical for safe operation.
Specified for turbocharger mounting, exhaust manifold flanges, and high-performance engine builds where conventional steel studs fail due to heat and fatigue.

Nimonic 90 Studs Standards & International Certifications

Nimonic 90 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, AMS material certification, heat treatment records, and first article inspection report (FAIR) — available on request for all orders.
Standards
DIN 938 DIN 939 DIN 976-1 ASME B18.31.2 IS 1367
Certifications
ISO 9001:2015NABL LabPED 2014/68/EUMTC 3.1 / 3.2

Buy Nimonic 90 Studs from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified Nimonic 90 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.
022-6743-7972
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Answers for Buyers

Nimonic 90 Studs — Frequently Asked Questions

Browse expert answers to common questions about Nimonic 90 Studs from RealBolt — covering AMS specification, heat treatment, creep rupture data, max service temperature, sizes, and aerospace certification. Contact our technical team directly for project-specific guidance on Nimonic 90 studs selection and pricing.
Nimonic 90 stud bolts are supplied to DIN 976 (metric full thread), ASME B16.5 (inch flange studs), and ASME B18.31.2 (continuous thread). Custom thread forms (BSW, BSF, Whitworth) and lengths are available on request. All studs are manufactured from ASTM B637 or AMS 5829 certified bar stock.
Always use a nickel-based anti-seize (such as Molykote P-37 or Jet-Lube Pure Nickel) on threads and nut faces to prevent galling and seizing at high temperatures. Avoid copper-based anti-seize, as it can cause galvanic corrosion on nickel alloys.
Yes, Nimonic 90 studs are engineered for continuous service up to 950°C, retaining high tensile and creep strength. They are widely used in turbine and furnace applications where standard stainless steel or Inconel 600 studs would fail due to softening or oxidation.
No MOQ for standard sizes (M10-M30) held in stock – single pieces can be supplied for urgent repairs. Custom sizes or non-standard threads typically require a 10 kg minimum batch. Price breaks are available at 25, 100, and 250 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