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| Specification | Value |
|---|---|
| UNS Number | N07090 |
| DIN/Werkstoff Number | 2.4632 |
| Tensile Strength | 1150–1300 MPa |
| Yield Strength (0.2%) | 700–850 MPa |
| Density | 8.19 g/cm³ |
| Max Service Temperature | 920°C |
| Element | Composition (%) |
|---|---|
| Ni | bal |
| Co | 15.0–21.0 |
| Cr | 18.0–21.0 |
| Ti | 2.0–3.0 |
| Al | 1.0–2.0 |
| Fe | ≤1.5 |
| C | ≤0.13 |
| Mn | ≤1.0 |
Nimonic 90 Fasteners derive their strength from a nickel-chromium-cobalt matrix strengthened by additions of titanium and aluminium, which form gamma-prime precipitates responsible for exceptional high-temperature strength. Chromium content, typically around 19-21%, provides oxidation and corrosion resistance, while cobalt enhances matrix stability at elevated temperatures. These carefully balanced alloying elements enable the material to retain structural integrity, creep resistance and fatigue strength even under prolonged thermal and mechanical stress, making it ideal for demanding fastening applications.
Engineering benefits include outstanding resistance to oxidation, corrosion and creep at temperatures exceeding 800°C, combined with excellent mechanical performance under cyclic loading. Nimonic 90 Fasteners maintain tensile and yield strength across a wide temperature range, ensuring reliable clamping force and dimensional stability in aerospace, gas turbine and high-temperature industrial applications where standard steel or stainless fasteners would fail.
Specifications
Nimonic 90 Fasteners are high-performance nickel-chromium-cobalt alloy components defined by precise dimensional specifications, tensile strength, hardness, and temperature-resistant mechanical properties. Their technical data typically covers size ranges, threading details, and service performance for demanding high-temperature applications where consistent reliability is essential.
| Property | Value |
|---|---|
| Tensile Strength | 1150–1300 MPa |
| Yield Strength (0.2%) | 700–850 MPa |
| Elongation | 20–30% |
| Reduction of Area | 25–35% |
| Hardness | 300–360 HV |
| Modulus of Elasticity | 222 GPa |
| Thermal Expansion (20-100°C) | 12.7 x10⁻⁶/°C |
| Thermal Conductivity | 11.5 W/m·K |
| Density | 8.19 g/cm³ |
| Melting Range | 1310–1370°C |
| Heat Treatment | Solution + Age Hardened |
| Max Service Temperature | 920°C |
| Category | Details |
|---|---|
| Bolt Standard | ASTM A453, ASME B18.2.1 |
| Stud Bolt Standard | ASTM A453 Gr 660, MSS SP-75 |
| Nut Standard | ASME B18.2.2, DIN 934 |
| Washer Standard | ASME B18.21.1, DIN 125 |
| Thread Form | UNC, UNF, Metric Coarse/Fine |
| Diameter Range | M6 – M100 / 1/4" – 4" |
| Length Range | 10mm – 500mm |
| Available Product Forms | Bolts, Studs, Nuts, Washers, Screws |
| Custom Sizes | Available on request |
| Manufacturing Standards | ISO 9001, AS9100 |
| Inspection Standards | NACE MR0175, EN 10204 3.1 |
Applications
