INCONEL 625 Rod: Superior Strength and Corrosion Resistance for Extreme Environments
INCONEL 625 rods are renowned for their exceptional strength, outstanding corrosion resistance, and excellent fabricability, making them ideal for demanding applications across various industries. This nickel-based superalloy maintains its integrity across a wide temperature range, from cryogenic levels up to 1800°F (982°C), ensuring reliable performance in extreme conditions.
Chemical Composition of INCONEL 625 Rods:
| Element |
Composition (%) |
| Nickel (Ni) |
58.0 min |
| Chromium (Cr) |
20.0–23.0 |
| Molybdenum (Mo) |
8.0–10.0 |
| Niobium (Nb) + Tantalum (Ta) |
3.15–4.15 |
| Iron (Fe) |
5.0 max |
| Cobalt (Co) |
1.0 max |
| Manganese (Mn) |
0.50 max |
| Silicon (Si) |
0.50 max |
| Aluminum (Al) |
0.40 max |
| Titanium (Ti) |
0.40 max |
| Carbon (C) |
0.10 max |
| Phosphorus (P) |
0.015 max |
| Sulfur (S) |
0.015 max |
Mechanical Properties of INCONEL 625 Rods:
| Property |
Value |
| Tensile Strength |
120–160 ksi (827–1103 MPa) |
| Yield Strength (0.2% Offset) |
60–110 ksi (414–758 MPa) |
| Elongation |
30–60% |
| Hardness (Brinell) |
175–240 HB |
Physical Properties of INCONEL 625 Rods:
| Property |
Value |
| Density |
8.44 g/cm³ (0.305 lb/in³) |
| Melting Range |
2350–2460°F (1290–1350°C) |
| Specific Heat Capacity |
0.098 Btu/lb·°F (410 J/kg·°C) |
| Thermal Conductivity |
5.4 Btu·in/h·ft²·°F (7.7 W/m·K) |
| Electrical Resistivity |
129 µΩ·cm |
Key Features of INCONEL 625 Rods:
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Exceptional Corrosion Resistance: Offers outstanding resistance to pitting, crevice corrosion, and stress-corrosion cracking, particularly in chloride-rich environments.
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High Strength and Durability: Maintains excellent tensile, creep, and rupture strength across a broad temperature spectrum without the need for precipitation-hardening treatments.
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Excellent Fabricability: Easily fabricated using conventional techniques, including welding and brazing, facilitating versatile application in complex designs.
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Thermal Stability: Retains mechanical properties and resists oxidation and carburization at elevated temperatures up to 1800°F (982°C).
Applications of INCONEL 625 Rods:
INCONEL 625 rods are utilized in a variety of industries due to their robust performance characteristics:
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Aerospace: Components such as aircraft ducting systems, engine exhaust systems, and thrust-reverser systems benefit from the alloy's high strength and thermal fatigue resistance.
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Marine Engineering: Ideal for seawater applications like propeller blades, mooring cables, and submarine propulsion systems, owing to its resistance to pitting and crevice corrosion.
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Chemical Processing: Used in equipment like heat exchangers, reaction vessels, and distillation columns where corrosion resistance and strength are critical.
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Power Generation: Employed in nuclear reactors for components such as reactor-core and control-rod mechanisms, leveraging its strength and corrosion resistance in high-temperature, high-pressure environments.
Frequently Asked Questions (FAQs):
Q1: What makes INCONEL 625 rods suitable for high-temperature applications?
A1: INCONEL 625 rods maintain high tensile and creep strength, along with oxidation resistance, at temperatures up to 1800°F (982°C), making them ideal for high-temperature environments.
Q2: Can INCONEL 625 rods be welded for custom fabrications?
A2: Yes, INCONEL 625 rods exhibit excellent weldability and can be readily welded using conventional methods without the need for post-weld heat treatment.
Q3: Are INCONEL 625 rods resistant to seawater corrosion?
A3: Absolutely, they offer exceptional resistance to pitting, crevice corrosion, and stress-corrosion cracking in seawater, making them suitable for marine applications.
Q4: How do INCONEL 625 rods perform in chemical processing environments?
A4: They provide outstanding resistance to a wide range of corrosive chemicals and are commonly used in equipment like heat exchangers and reactors.
Q5: What industries commonly use INCONEL 625 rods?
A5: Industries such as aerospace, marine engineering, chemical processing, and power generation frequently utilize INCONEL 625 rods for their strength and corrosion resistance.
INCONEL 625 rods offer a combination of high strength, excellent corrosion resistance, and versatility, making them a preferred choice for challenging applications across various industries.
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Superior Strength Corrosion Resistance Inconel 625 Rod GH625 2.4856 Images
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