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Inconel X-750 Threaded Rods Manufacturer & Exporter in India

Explore Inconel X-750 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 X-750 Threaded Rods?

Inconel X-750 threaded rods are precipitation-hardened nickel-chromium alloy fasteners manufactured from UNS N07750 bar stock conforming to ASTM B637. The alloy achieves its exceptional strength through gamma-prime precipitation hardening via aluminium (0.4-1.0%) and titanium (2.25-2.75%), delivering tensile strengths exceeding 1100 MPa in the age-hardened condition – significantly higher than solid-solution alloys of comparable corrosion resistance.

Inconel X-750 threaded rods are specified under AMS 5698 and AMS 5699 for high-temperature bolting in gas turbine casings, nuclear reactor internals, and aerospace structural assemblies. The alloy retains useful mechanical properties up to 700°C and resists oxidation to 980°C, making it the preferred threaded rod material wherever stainless steel or standard nickel alloys fall short under combined thermal and mechanical loading.

Quick Specifications

MaterialInconel X-750
UNS NumberN07750
DIN Number2.4669
Material StandardASTM B637
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 Strength1100 MPa (160 ksi) min (aged)
Yield Strength793 MPa (115 ksi) min (aged)
HardnessMax 35 HRC / 331 HB
? All material certified by NABL-accredited laboratory. PMI available on request.

Complete the Fastener Set

Other Inconel X-750 Fastener Products Available from RealBolt

RealBolt also manufactures the complete Inconel X-750 fastener range from certified nickel-chromium superalloy bar stock, including Inconel X-750 Bolts, Inconel X-750 Nuts, Inconel X-750 Screws, Inconel X-750 Washers, and Inconel X-750 Studs. All Inconel X-750 fastener types are produced to ASTM with full EN 10204 MTC 3.1/3.2 documentation.
Inconel X-750 Bolts
Inconel X-750 Nuts
Inconel X-750 Screws
Inconel X-750 Washers
Inconel X-750 Studs

Technical Data

Inconel X-750 Threaded Rods Dimensions, Sizes & Thread Standards

Inconel X-750 Threaded Rods are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 975 (full-length thread) / DIN 976 (stud form) / ISO 888. Custom lengths in 5mm increments. Inch dimensions available per ASME B18.31.3. All Inconel X-750 threaded rods dimensions conform to applicable DIN, ISO, and ASME B18 standards.

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

Size (M)Pitch (mm)Core Dia (mm)Stress Area (mm²)Min L (mm)Max L (mm)
M61.04.7720.11001000
M81.256.4736.61001000
M101.58.1658.01002000
M121.759.8584.31002000
M162.013.551571003000
M202.516.932451003000
M243.020.323531003000
M303.525.715612004000
M364.031.098172004000
M424.536.4811202004000
M485.041.8714702005000
M565.549.2520303005000
M646.056.6426803006000
M726.064.6434603006000
M806.072.6443403006000
M1006.092.6469905006000

Dimensional & Material Standards

StandardCoversThread
DIN 975Threaded rods, full thread, 1m/2m lengthsMetric
DIN 976-1Stud bolts, metric threadMetric
ISO 888Bolts, screws, studs - nominal lengthsMetric
ASME B18.31.3Continuous threaded rodsUNC/UNF
ASME B16.5Stud bolts for flangesUNC
MSS SP-75Stud bolts, high-pressure fittingsUNC
ASTM A193Alloy steel and stainless bolting (reference)UNC
Material StandardRequirement
ASTM B637Bar/rod - UNS N07750
AMS 5698Bars, forgings - annealed + aged
AMS 5699Bars, forgings - solution treated + aged
NACE MR0175Sour service hardness =35 HRC
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

Inconel X-750 Chemical Composition

Inconel X-750 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 B637

ElementComposition (%)
Nickel + Cobalt (Ni+Co)70.0% min
Chromium (Cr)14.0-17.0%
Iron (Fe)5.0-9.0%
Titanium (Ti)2.25-2.75%
Aluminium (Al)0.40-1.00%
Niobium + Tantalum (Nb+Ta)0.70-1.20%
Manganese (Mn)1.00% max
Silicon (Si)0.50% max
Copper (Cu)0.50% max
Carbon (C)0.08% max
Cobalt (Co)1.00% max
? All heats verified by NABL-accredited spectrometry. PMI available on request.

Why Inconel X-750 Alloy Composition Matters for Threaded Rods

Ti + Al — Gamma-Prime Precipitation Hardening
Titanium and aluminium combine with nickel to form the Ni3(Al,Ti) gamma-prime phase during ageing. This precipitation mechanism raises tensile strength above 1100 MPa without cold working, giving threaded rods exceptional load-carrying capacity at elevated temperatures where austenitic stainless steels lose strength rapidly.
Cr (14–17%) — Oxidation and Hot Corrosion Resistance
Chromium forms a stable, adherent Cr2O3 oxide scale that protects threaded rod surfaces from oxidation up to 980°C and resists sulphidation in gas turbine and industrial furnace environments. This allows Inconel X-750 threaded rods to function without protective coatings in high-temperature assemblies.
Nb + Ta (0.70–1.20%) — Grain Boundary Stabilisation
Niobium and tantalum additions stabilise grain boundaries and suppress carbide precipitation during thermal cycling. This is critical for threaded rods used in nuclear reactor internals and gas turbine casings, where long-term thermal exposure must not degrade thread integrity or relaxation resistance.

Fastener Performance

Inconel X-750 Threaded Rods Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for Inconel X-750 Threaded Rods per ASTM. Inconel X-750 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 X-750 Threaded Rods (Age-Hardened)

Rod SizeDry (Nm)Lubricated (Nm)Clamp Load (kN)
M121129041
M1627021698
M20540432157
M24940752228
M3018801504363
M3632602608527
M4252004160726
M4877206176955
?? Anti-galling: Use nickel-based anti-seize (Molykote P-37 or Bostik Never-Seez Pure Nickel). Lubricated values assume K=0.15. Never use copper-based or zinc-based anti-seize on nickel alloys - galvanic incompatibility accelerates thread corrosion.

Industry Applications

Inconel X-750 Threaded Rods Applications — Industries & End Uses

Inconel X-750 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 X-750 threaded rods are the standard bolting material for gas turbine casing joints, compressor stator vane retention, and combustion liner attachment hardware. The alloy’s gamma-prime strengthening maintains clamping force at metal temperatures up to 700°C, preventing joint relaxation during thermal cycling. AMS 5698 and AMS 5699 are the governing specifications for aerospace and industrial gas turbine OEMs.
Threaded rods in UNS N07750 are widely used in pressurised water reactor (PWR) and boiling water reactor (BWR) internal structures, including core barrel hold-down assemblies, fuel assembly guide tube fasteners, and control rod drive mechanism components. The alloy’s resistance to stress corrosion cracking in high-temperature water and its low neutron absorption cross-section make it a preferred choice per ASME Section III nuclear code.
Inconel X-750 threaded rods are specified for hot hydrogen service flanges, catalytic reformer reactor closures, and hydrocracker feed/effluent heat exchanger connections operating above 500°C where ASTM A193 B7 alloy steel bolting loses adequate creep resistance. The rods maintain bolt load under sustained high-temperature service without requiring frequent re-torquing.
Threaded rods in Inconel X-750 are used in aircraft nacelle structural tie rods, exhaust nozzle adjustment mechanisms, and afterburner duct retention hardware. The combination of high tensile strength, fatigue resistance, and oxidation resistance to 980°C allows these rods to function in locations where titanium alloys are temperature-limited and stainless steels lack adequate strength.

Inconel X-750 Threaded Rods Standards & International Certifications

Inconel X-750 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 9001:2015AMS 5698 / 5699NABL LabASME Section IIIMTC 3.1 / 3.2

Buy Inconel X-750 Threaded Rods from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified Inconel X-750 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 X-750 Threaded Rods — Frequently Asked Questions

Browse expert answers to common questions about Inconel X-750 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 X-750 threaded rods selection and pricing.
Inconel X-750 threaded rods are supplied in two primary conditions. Annealed rods (solution treated only) have a tensile strength of approximately 860 MPa and are used where subsequent welding or forming is required. Age-hardened rods (per AMS 5698 – annealed then aged at 704°C for 20 hours) achieve tensile strengths exceeding 1100 MPa and are the standard supply condition for structural and high-temperature bolting applications. Always specify the required heat treatment condition when ordering, as the two conditions have significantly different mechanical properties and torque values.
Inconel X-750 threaded rods are available in ISO metric threads per DIN 975 and DIN 976-1 (M6 to M100), UNC and UNF inch threads per ASME B18.31.3 (¼” to 4″), and BSPP/BSW Whitworth threads on request. For ASME B16.5 flange stud bolt applications, threads are cut to ASME B1.1 UNC-2A tolerance. Fine-pitch metric threads (ISO 965) are available for vibration-critical aerospace assemblies. Lead time for non-standard thread forms is 15 working days.
Yes – UNS N07750 is an approved material for nuclear reactor internal fasteners under ASME Boiler and Pressure Vessel Code Section III. Inconel X-750 threaded rods are used in PWR and BWR core barrel assemblies, fuel assembly hold-down hardware, and control rod drive mechanism components. The alloy’s resistance to stress corrosion cracking in high-temperature pressurised water (288-325°C), combined with its low neutron absorption cross-section, makes it one of the few alloys qualified for long-term in-core service. Nuclear-grade supply requires additional documentation including certified chemical analysis, mechanical testing, and NDE per ASME NCA-3800.
Use a pure nickel-based anti-seize compound such as Molykote P-37, Bostik Never-Seez Pure Nickel, or Jet-Lube KOPR-KOTE Pure Nickel. Apply to the full thread engagement length and the nut bearing face. Reduce published dry torque values by 20% when using anti-seize (K factor = 0.15). For high-temperature applications above 500°C, use a high-temperature nickel paste rated for the service temperature. Never use copper-based, zinc-based, or graphite-based anti-seize on nickel alloys – galvanic incompatibility and contamination risk make these unsuitable.

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