ASTM Inconel 751 Rod High Performance Alloy For Elevated Temperature
INCONEL 751 Rod: High-Performance Alloy for Elevated Temperature Applications
INCONEL 751 rods are engineered for exceptional performance in high-temperature environments, offering a robust combination of strength, corrosion resistance, and thermal stability. This nickel-chromium alloy is particularly well-suited for components subjected to extreme heat and corrosive conditions, making it a preferred choice in various demanding industries.
Chemical Composition of INCONEL 751 Rods:
| Element | Composition (%) |
|---|---|
| Nickel (Ni) + Cobalt | 70.0 min |
| Chromium (Cr) | 14.0 - 17.0 |
| Iron (Fe) | 5.0 - 9.0 |
| Titanium (Ti) | 2.0 - 2.6 |
| Aluminum (Al) | 0.9 - 1.5 |
| Niobium (Nb) + Tantalum (Ta) | 0.7 - 1.2 |
| Manganese (Mn) | ≤ 1.0 |
| Silicon (Si) | ≤ 0.5 |
| Sulfur (S) | ≤ 0.01 |
| Copper (Cu) | ≤ 0.5 |
| Carbon (C) | ≤ 0.10 |
Mechanical Properties:
| Property | Value |
|---|---|
| Tensile Strength | 1158 MPa |
| Yield Strength (0.2% offset) | 1034 MPa |
| Elongation | 15% |
| Hardness | 335 HB |
Physical Properties:
| Property | Value |
|---|---|
| Density | 8.22 g/cm³ |
| Melting Range | 1390–1430°C |
| Thermal Conductivity | 12.0 W/m·K |
| Specific Heat | 431 J/kg·K |
| Coefficient of Expansion | 12.6 µm/m·°C |
Applicable Standards:
INCONEL 751 rods comply with international standards such as ASTM B637 and AMS 5706, ensuring consistent quality and performance.
Applications of INCONEL 751 Rods:
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Automotive Industry: Ideal for manufacturing exhaust valves in internal combustion engines, where high-temperature strength and corrosion resistance are critical.
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Aerospace: Suitable for components in jet engines and other aerospace applications requiring materials that withstand extreme temperatures and stress.
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Power Generation: Used in turbine components and other high-temperature machinery, benefiting from its robust mechanical properties and thermal stability.
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Chemical Processing: Applicable in environments involving aggressive chemicals and high temperatures, thanks to its excellent corrosion resistance.
Frequently Asked Questions (FAQs):
Q1: What makes INCONEL 751 rods suitable for high-temperature applications?
A1: The alloy's composition, particularly its nickel-chromium base with additions of titanium and aluminum, provides exceptional strength and oxidation resistance at elevated temperatures.
Q2: How does INCONEL 751 perform in corrosive environments?
A2: INCONEL 751 exhibits excellent resistance to oxidation and corrosion, especially in high-temperature settings, making it ideal for applications like exhaust systems and turbine components.
Q3: Can INCONEL 751 rods be welded?
A3: Yes, INCONEL 751 can be welded using standard welding techniques. However, appropriate procedures should be followed to maintain its mechanical properties and corrosion resistance.
Q4: What are the typical sizes available for INCONEL 751 rods?
A4: Diameters typically range from 3 mm to 600 mm, with lengths from 0.5 m to 6.0 m. Custom sizes can be produced to meet specific requirements.
Q5: Are there specific heat treatments required for INCONEL 751 rods?
A5: Solution annealing followed by aging is commonly employed to achieve the desired mechanical properties and microstructure.
INCONEL 751 rods are the material of choice for industries requiring a combination of high strength, excellent corrosion resistance, and thermal stability in challenging environments.
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