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| UNS Number | N08800 |
| ASTM/ASME Standard | ASTM B564 / ASME SB564 |
| Tensile Strength | 520 MPa (min) |
| Yield Strength | 205 MPa (min) |
| Density | 7.94 g/cm³ |
| Max Service Temperature | 1100°C |
| Element | Composition (%) |
|---|---|
| Ni | 30.0–35.0 |
| Cr | 19.0–23.0 |
| Fe | bal |
| C | ≤0.10 |
| Al | 0.15–0.60 |
| Ti | 0.15–0.60 |
| Mn | ≤1.5 |
| Si | ≤1.0 |
Inconel 800 fasteners derive their exceptional performance from a balanced composition of nickel, chromium and iron. Nickel content, typically around 30-35%, provides resistance to stress corrosion cracking and stabilizes the austenitic structure at elevated temperatures. Chromium, present at approximately 19-23%, forms a protective oxide layer that enhances resistance to oxidation and general corrosion. Controlled additions of aluminum and titanium contribute to solid solution strengthening and improve high-temperature stability, while carbon content is restricted to minimize sensitization and intergranular attack during prolonged thermal exposure.
This carefully engineered composition delivers outstanding resistance to oxidation, carburization and sulfidation, making Inconel 800 fasteners ideal for demanding high-temperature environments including heat exchangers, furnace components and chemical processing equipment. Their excellent mechanical strength, combined with superior corrosion resistance across a wide temperature range, ensures long-term reliability under cyclic thermal loading. These characteristics make Inconel 800 fasteners a preferred choice for critical joints requiring durability, dimensional stability and resistance to harsh operating conditions.
Specifications
Inconel 800 Fasteners are engineered for demanding service, with specifications centered on strength, corrosion resistance, dimensional accuracy, and stable mechanical properties. Their technical data typically covers thread size, diameter, length, and tolerance requirements, making them suitable for applications where reliable performance and precise fit are essential.
| Tensile Strength | 520 MPa (min) |
| Yield Strength (0.2%) | 205 MPa (min) |
| Elongation | 30% (min) |
| Hardness | ≤ 90 HRB |
| Modulus of Elasticity | 196 GPa |
| Thermal Conductivity | 11.5 W/m·K |
| Density | 7.94 g/cm³ |
| Melting Range | 1357–1385°C |
| Maximum Service Temperature | 1100°C |
| Bolt Standard | ASME B18.2.1 / DIN 931 |
| Stud Bolt Standard | ASME B16.5 / MSS SP-75 |
| Nut Standard | ASME B18.2.2 / DIN 934 |
| Washer Standard | ASME B18.22.1 / DIN 125 |
| Thread Form | UNC, UNF, Metric Coarse & Fine |
| Diameter Range | M6 – M64 / 1/4" – 2.5" |
| Length Range | 10mm – 500mm |
| Available Product Forms | Hex Bolts, Studs, Nuts, Washers, Socket Screws |
| Custom Sizes | Available on request |
Applications
