Inconel 718 Stud Bolts
Inconel 718 Studs are high-performance fasteners made from a nickel-chromium alloy known for its
exceptional strength, corrosion resistance, and thermal stability. Classified under UNS N07718,
Alloy 718, and 2.4668, these studs
meet ASTM A1014
standards
and are widely used in aerospace, oil & gas, and power generation sectors. They maintain
mechanical integrity in extreme environments, including cryogenic and high-temperature conditions
up to 700°C. Inconel 718 Studs are available in fully threaded, double-end, and tap-end
configurations, offering superior resistance to oxidation, pitting, and stress-corrosion
cracking—making them ideal for critical applications requiring long-term durability and precision
fastening.
Please visit the Specification page for detailed information on Inconel 718 Studs, including chemical composition, heat treatment processes, mechanical properties like tensile strength, yield strength, hardness requirements, product markings, and relevant manufacturing standards.
For a quick quote on Inconel 718 Stud Bolts, feel free to reach out to our sales team at estimation@ferrobend.com
Inconel 718 Stud Bolts Features
| Category | Details |
|---|---|
| Product Name | Inconel 718 Stud Bolts |
| Material | Nickel-Chromium Alloy – UNS N07718, Alloy 718, Werkstoff Nr. 2.4668 |
| Key Properties | High strength, fatigue resistance, oxidation resistance, and excellent creep-rupture capability up to 700°C (1290°F) |
| Thread Types | Unified Threads (UNF/UNC), Metric Coarse & Fine, BSW, or custom threading |
| Common Sizes | Diameters from M6 to M100 or ¼″ to 4″ |
| Length Options | From 10 mm to 1000 mm or ½″ to 40″ (custom cut lengths available) |
| Thread Tolerances | As per ISO 965, ASME B1.1, or client specifications |
| Manufacturing Standards | ASTM A1014, ASME B16.5, DIN 938 / 939 / 976-1, BS 4882, API 6A (optional) |
| Temperature Range | Usable from -253°C to +700°C (−423°F to +1290°F) |
| Corrosion Resistance | Outstanding resistance to chloride stress corrosion, pitting, oxidation, acid attack, and seawater environments |
| Typical Uses | Aerospace, Turbines, Jet Engines, Oil & Gas, Marine, Subsea Equipment, Nuclear Reactors, Heat Exchangers, Petrochemical and Power Plants |
| Available Forms/Types | Fully Threaded Studs, Double-End Studs (equal/unequal), Tap End Studs, Continuous Threaded Rods, Custom-Machined Studs |
| Surface Finish | Bright, Matte, Pickled, Passivated, or Oxide-Free |
| Surface Coating | Silver plating, PTFE, Molybdenum, Dry film lubricants, or anti-galling/anti-seize coatings |
| Heat Treatment | Supplied in solution annealed + age-hardened condition (precipitation hardening), as per AMS 5662 / AMS 5663 |
| Certification | EN 10204 3.1 / 3.2, NACE MR0175/ISO 15156, PED, Lloyd’s, DNV, or project-specific third-party inspections |
Key Dimensional Standards for Studs and Stud Bolts
| Standard | Issuing Body | Focus | Details & Importance |
|---|---|---|---|
| DIN 976-1 | DIN (Germany) | Global Use | Fully threaded rods and studs with metric threads. This is the most widely adopted dimensional standard for threaded studs in industrial, structural, and petrochemical applications. Commonly used with Inconel 718 and 718, particularly in offshore and high-temperature environments. |
| BS 4882 | BSI (UK) | Flanged Joints | Defines dimensional specifications for studs used in flanged bolting for pipelines and pressure vessels. Essential for oil & gas and process industries. Used globally, especially in projects referencing ASME, EN, or API flanges. |
| DIN 938 | DIN (Germany) | Equal Thread Lenghts | Specifies double-end studs with equal thread lengths. Widely used in machinery, engines, and equipment assemblies where uniform thread projection is needed. |
| DIN 939 | DIN (Germany) | UnEqual Thread Lenghts | Defines double-end studs with unequal thread lengths. Ideal where one end is to be permanently fixed into a tapped hole and the other used for nut tightening. Very common in equipment, engines, and heavy assembly applications. |
Other Dimensional Standards (Referenced Less Often)
| Standard | Issuing Body | Focus |
|---|---|---|
| ASME B16.5 | ASME (USA) | Flange bolting patterns and bolt lengths |
| DIN 940 | DIN (Germany) | Stud with interference fit |
| BS 4439 | BSI (UK) | Metric threaded rods—comparable to DIN 976-1 |
| JIS B1173 | JIS (Japan) | Stud bolts for JIS flange bolting |
| ASME B18.31.2 | Stud bolts for JIS flange bolting |
Summary
When specifying Inconel 718 stud bolts, engineers and procurement specialists commonly refer to DIN 976-1, BS 4882, DIN 938, and DIN 939 for precise thread dimensions, lengths, tolerances, and installation compatibility with flanges and assemblies. These standards ensure consistent quality, especially in critical applications such as oil & gas, marine, chemical processing, and aerospace.