Inconel 602CA Rod (UNS N06025) | 1260°C Oxidation Resistance for
Gas Turbines & Petrochemical Systems
Product Description
Inconel 602CA Rod is a nickel-chromium-iron alloy engineered for
unparalleled performance in extreme environments. Renowned for its
exceptional resistance to oxidation, carburization, and thermal
fatigue, this alloy thrives in temperatures up to 1260°C (2300°F) while maintaining structural integrity. Its high chromium (24–26%)
and aluminum (1.8–2.4%) content forms a protective oxide layer,
ensuring long-term durability in corrosive atmospheres such as
sulfur-rich or chloride-laden industrial settings.
Ideal for high-stress applications, Inconel 602CA Rod delivers
superior creep strength and thermal stability, making it indispensable in gas turbines, petrochemical reactors,
and aerospace propulsion systems. With optimized carbon and yttrium
additions, it resists grain coarsening even under prolonged thermal
cycling. Available in round bars, forged rods, and custom profiles,
this alloy meets stringent standards like ASTM B366 and AMS 5666,
offering reliability for mission-critical components.
| 1. Chemical Composition |
| Nickel (Ni) | Balance |
| Chromium (Cr) | 24.0–26.0% |
| Iron (Fe) | ≤ 8.0% |
| Aluminum (Al) | 1.8–2.4% |
| Titanium (Ti) | ≤ 0.2% |
| Carbon (C) | 0.15–0.25% |
| Silicon (Si) | ≤ 0.5% |
| Manganese (Mn) | ≤ 0.5% |
| Yttrium (Y) | ≤ 0.12% |
| Zirconium (Zr) | ≤ 0.1% |
| Residuals | ≤ 0.5% |
| 2. Applicable Standards | |
| ASTM | ASTM B166 /ASME SB166(Standard Specification for
Nickel-Chromium-Iron Alloy Rod/Bar) |
| ASTM | ASTM B168 /ASME SB168 (Sheet, Strip) |
| ASTM | ASTM B163/B167 /ASME SB163/SB167 (Seamless Tube) |
| ASTM | ASTM B751/B775 /ASME SB751/SB775 (Welding Tube) |
| 3. Mechanical Properties| |
| Tensile Strength (RT) | 550–750 MPa |
| Yield Strength (RT) | 250–350 MPa |
| Elongation (% in 50mm) | ≥ 30% |
| Hardness (Rockwell B) | ≤ 90 HRB |
| 4. Physical Properties | |
| Density | 7.93g/cm³ |
| Melting Range | 1340–1400°C (2444–2552°F) |
| Thermal Conductivity | 10.4 W/m·K (at 100°C) |
| Electrical Resistivity | 123 µΩ·cm |
| Specific Heat Capacity | 447 J/kg·K |
Applications
Aerospace: Combustion chambers, turbine blades, and exhaust systems.
Energy: Boiler components, nuclear reactor cores, and fuel cell systems.
Petrochemicals: Ethylene cracker tubes, reformer furnaces, and catalytic reactor
supports.
Heat Treatment: Radiant tubes, annealing fixtures, and sintering trays.
Q&A Section
Q1: How does Inconel 602CA Rod perform in cyclic oxidation
environments?
A: The alloy’s dual-layer Cr₂O₃/Al₂O₃ oxide structure prevents
spalling and degradation, ensuring stability up to 1260°C under repeated thermal cycling.
Q2: What welding techniques are recommended for Inconel 602CA Rod?
A: Use TIG/GTAW methods with Inconel 617/625 filler wires.
Pre-cleaning and post-weld stress-relief annealing are critical to
maintain corrosion resistance.
Q3: How does it compare to Inconel 601 or 625?
A: Inconel 602CA offers superior aluminum and yttrium-enhanced oxidation resistance, outperforming 601 in sulfur-rich environments and 625 in extreme
thermal stability.
Q4: What industries in Southeast Asia commonly use this alloy?
A: Petrochemical plants in Thailand, semiconductor furnaces in
Malaysia, and marine exhaust systems in Singapore rely on its
corrosion resistance.
