INCONEL 693 Alloy Rod for Industrial Applications Requiring Superior Thermal and Chemical Stability
INCONEL 693 Rod: Exceptional Resistance to Metal Dusting and High-Temperature Corrosion
INCONEL 693 rods are engineered to provide outstanding resistance to metal dusting and high-temperature corrosion, making them ideal for use in chemical and petrochemical processing environments. This nickel-chromium-aluminum alloy offers superior performance in aggressive atmospheres, ensuring longevity and reliability in demanding applications.
Chemical Composition of INCONEL 693 Rods:
| Element |
Composition (%) |
| Nickel (Ni) |
Balance |
| Chromium (Cr) |
27.0 - 31.0 |
| Iron (Fe) |
2.5 - 6.0 |
| Aluminum (Al) |
2.5 - 4.0 |
| Niobium (Nb) |
0.5 - 2.5 |
| Manganese (Mn) |
≤ 1.0 |
| Titanium (Ti) |
≤ 1.0 |
| Copper (Cu) |
≤ 0.5 |
| Silicon (Si) |
≤ 0.5 |
| Carbon (C) |
≤ 0.15 |
| Sulfur (S) |
≤ 0.01 |
Mechanical Properties:
| Property |
Value |
| Tensile Strength |
≥ 1150 MPa |
| Yield Strength (0.2% offset) |
≥ 1000 MPa |
| Elongation |
≥ 15% |
| Hardness (Brinell) |
≤ 330 HB |
Physical Properties:
| Property |
Value |
| Density |
7.77 g/cm³ |
| Melting Range |
1317–1367°C |
| Electrical Resistivity |
1.168 µΩ·m |
| Thermal Conductivity |
9.1 W/m·K |
Applicable Standards:
INCONEL 693 rods comply with international standards such as ASTM B166, ensuring consistent quality and performance.
Applications of INCONEL 693 Rods:
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Chemical and Petrochemical Processing: Ideal for equipment exposed to high-temperature, corrosive environments, particularly where metal dusting is a concern.
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Synthesis Gas Production: Suitable for components in syngas production facilities, offering resistance to carburization and oxidation.
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Waste-to-Energy and Biomass Incinerators: Used in high-temperature waste treatment systems, providing durability against aggressive corrosive agents.
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Thermal Processing Equipment: Applicable in furnaces and heat-treating equipment where resistance to oxidation and sulfidation is essential.
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High-Temperature Fuel Cell Reformers: Ensures longevity and performance in reformer units operating under extreme conditions.
Frequently Asked Questions (FAQs):
Q1: What makes INCONEL 693 rods resistant to metal dusting?
A1: The high chromium content combined with aluminum enhances the alloy's ability to form a protective oxide layer, preventing metal dusting in high-temperature, carbon-rich environments.
Q2: Can INCONEL 693 rods be used in sulfur-containing atmospheres?
A2: Yes, the alloy exhibits excellent resistance to sulfidation, making it suitable for use in environments with high sulfur content.
Q3: Are these rods suitable for welding applications?
A3: INCONEL 693 rods can be welded using appropriate techniques, maintaining their corrosion resistance and mechanical properties in welded joints.
Q4: What forms are INCONEL 693 materials available in?
A4: Besides rods, INCONEL 693 is available in sheets, plates, bars, wire, tubes, pipes, fittings, and forgings to meet diverse industrial requirements.
Q5: How does INCONEL 693 compare to other high-temperature alloys?
A5: INCONEL 693 offers superior resistance to metal dusting and high-temperature corrosion compared to many other nickel-based alloys, making it a preferred choice for demanding applications.
INCONEL 693 rods are the material of choice for industries requiring exceptional resistance to metal dusting and high-temperature corrosion, ensuring durability and reliability in the most challenging environments.
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