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| Property | Value |
|---|---|
| UNS Number | N06075 |
| DIN/Werkstoff Number | 2.4951 |
| Tensile Strength | 700-900 MPa |
| Yield Strength (0.2%) | 280-450 MPa |
| Density | 8.37 g/cm³ |
| Max Service Temperature | 1050°C |
| Element | Composition (%) |
|---|---|
| Ni | ≥75.0 |
| Cr | 18.0–21.0 |
| Ti | 0.2–0.6 |
| Fe | ≤5.0 |
| C | 0.08–0.15 |
| Mn | ≤1.0 |
| Si | 0.5–1.0 |
Nimonic 75 fasteners derive their properties from a nickel-chromium base strengthened by titanium and carbon additions. Chromium content of around 19-21% provides excellent oxidation and corrosion resistance, while small titanium and carbon additions promote grain boundary carbide stability, enhancing high-temperature strength. The controlled nickel matrix ensures good ductility and resistance to thermal fatigue, making the alloy suitable for demanding fastening applications under cyclic thermal loading.
These compositional characteristics translate into fasteners offering excellent oxidation resistance up to 1050°C, strong resistance to scaling, and stable mechanical performance at elevated temperatures. The alloy retains adequate tensile and creep strength during prolonged high-temperature exposure, while maintaining good fabricability and weldability. Its corrosion resistance in oxidizing and sulphurous environments, combined with reliable mechanical integrity, makes Nimonic 75 fasteners ideal for gas turbines, furnace components, heat treatment equipment and other high-temperature industrial assemblies requiring long-term dimensional stability and structural reliability.
Specifications
Nimonic 75 Fasteners are high-performance nickel alloy components defined by their mechanical properties, dimensional tolerances, and technical data for demanding service. Their specifications cover size, thread, and strength requirements, with material performance aligned to applicable product standards where specified for reliable high-temperature fastening.
| Property | Value |
|---|---|
| Tensile Strength | 700-900 MPa |
| Yield Strength (0.2%) | 280-450 MPa |
| Elongation | ≥30% |
| Hardness | ≤240 HV |
| Modulus of Elasticity | 220 GPa |
| Thermal Expansion (20-100°C) | 12.8 x10⁻⁶/°C |
| Thermal Conductivity | 11.7 W/m·K |
| Density | 8.37 g/cm³ |
| Melting Range | 1345-1380°C |
| Max Service Temperature | 1050°C |
| Standard | Details |
|---|---|
| Bolt Standard | ASME B18.2.1, DIN 931/933 |
| Stud Bolt Standard | ASME B18.31.3, 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 to M64 / 1/4" to 2.5" |
| Length Range | 10mm to 300mm |
| Available Forms | Bolts, Studs, Screws, Nuts, Washers |
| Custom Sizes | Available on request |
| Inspection Standards | EN 10204 3.1/3.2, NACE MR0175 |
Applications
