Nimonic 75 Rod: High-Temperature Nickel-Chromium Alloy for Demanding Applications
Nimonic 75 rod is a nickel-chromium alloy known for its excellent oxidation and scaling resistance at elevated temperatures. With controlled additions of titanium and carbon, it maintains structural integrity in high-temperature environments. Originally developed for turbine blades in the 1940s, Nimonic 75 rods are now utilized in various industries requiring reliable performance under thermal stress.
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | Balance |
| Chromium (Cr) | 18.0–21.0 |
| Titanium (Ti) | 0.2–0.6 |
| Carbon (C) | 0.08–0.15 |
| Silicon (Si) | ≤1.0 |
| Copper (Cu) | ≤0.5 |
| Iron (Fe) | ≤5.0 |
| Manganese (Mn) | ≤1.0 |
| Property | Value |
|---|---|
| Density | 8.37 g/cm³ |
| Melting Range | 1340–1380°C |
| Ultimate Tensile Strength (Room Temp) | ~790 MPa |
| Yield Strength (0.2% offset) | ~410 MPa |
| Elongation | ~30% |
| Property | Value |
|---|---|
| Specific Heat (20°C) | 461 J/kg·°C |
| Thermal Conductivity (20°C) | 11.7 W/m·°C |
| Electrical Resistivity (20°C) | 1.09 µΩ·m |
| Coefficient of Thermal Expansion (20–100°C) | 11.0 µm/m·°C |
UNS N06075
W.Nr. 2.4951 / 2.4630
BS HR 5 / HR 504
AWS 032
Nimonic 75 rods are employed in various high-temperature applications, including:
Gas turbine components
Industrial furnace parts
Heat treatment equipment
Nuclear engineering components
Aerospace fasteners
Q: What is the maximum operating temperature for Nimonic 75 rods?
A: Nimonic 75 rods can operate effectively at temperatures up to approximately 1000°C, depending on the specific application and environmental conditions.
Q: Can Nimonic 75 rods be welded?
A: Yes, Nimonic 75 rods exhibit good weldability using standard welding techniques suitable for nickel-based alloys.
Q: Are Nimonic 75 rods resistant to corrosion?
A: Nimonic 75 rods offer good corrosion resistance, particularly against oxidation and scaling at high temperatures.