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| Specification | Value |
|---|---|
| UNS Number | N12105 |
| Tensile Strength | 1150 MPa min |
| Yield Strength | 760 MPa min |
| Density | 8.00 g/cm³ |
| Max Service Temperature | 950°C |
| Hardness | 340-390 HB |
| Element | Composition (%) |
|---|---|
| Ni | bal |
| Co | 18.0–22.0 |
| Cr | 14.0–17.0 |
| Al | 4.5–5.5 |
| Mo | 4.5–5.5 |
| Ti | 1.0–1.7 |
| Fe | ≤1.0 |
| C | ≤0.12 |
Nimonic 105 Fasteners derive their exceptional high-temperature performance from a carefully balanced composition of nickel, chromium, cobalt, molybdenum, aluminium and titanium. Chromium provides oxidation and corrosion resistance through the formation of a stable protective oxide layer, while cobalt enhances matrix strength at elevated temperatures. Molybdenum contributes solid solution strengthening, improving creep resistance, and the combined addition of aluminium and titanium promotes precipitation of the gamma prime phase, which is the primary strengthening mechanism responsible for the alloy’s outstanding mechanical stability under prolonged thermal exposure.
This carefully engineered composition delivers superior creep rupture strength, excellent resistance to oxidation and thermal fatigue, and reliable mechanical performance at temperatures approaching 950°C. These characteristics make Nimonic 105 Fasteners ideally suited for demanding fastening applications in gas turbines, aerospace engines and high-temperature industrial equipment, where consistent clamping force, dimensional stability and resistance to relaxation are essential for long-term operational safety and reliability.
Specifications
Nimonic 105 Fasteners combine high-temperature mechanical properties with precise dimensional specifications, offering controlled strength, hardness, and corrosion resistance for demanding service. Technical data typically covers size range, thread dimensions, and load-related performance, with material requirements aligned to applicable fastener standards where specified.
| Property | Value |
|---|---|
| Tensile Strength | 1150 MPa min |
| Yield Strength (0.2%) | 760 MPa min |
| Elongation | 15% min |
| Reduction of Area | 20% min |
| Hardness | 340-390 HB |
| Modulus of Elasticity | 210 GPa |
| Thermal Expansion (20-100°C) | 12.4 µm/m°C |
| Thermal Conductivity | 11.3 W/m·K |
| Density | 8.00 g/cm³ |
| Melting Range | 1300-1370°C |
| Heat Treatment | Solution + Double Age |
| Max Service Temperature | 950°C |
| Standard Type | Details |
|---|---|
| Bolt Standard | ASME B18.2.1, DIN 931/933 |
| Stud Bolt Standard | MSS SP-75, ASTM A193 |
| 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 to M64 / 1/4" to 2.5" |
| Length Range | 10mm to 300mm |
| Available Product Forms | Bolts, Studs, Nuts, Washers, Screws |
| Custom Sizes | Available on request |
| Manufacturing Standards | ASTM B637, AMS 5666 |
| Inspection Standards | NACE MR0175, PMI Testing |
Applications
