Inconel® 601
Inconel 601 is a nickel-chromium-iron alloy with an addition of aluminum for outstanding resistance to high-temperature oxidation. It is particularly known for its ability to resist spalling oxide scales even under severe thermal cycling conditions.
- Common Forms: Pipe, Tube, Plate, Sheet, Round Bar, Wire.
- Key Feature: Outstanding oxidation resistance up to 2200°F (1200°C).
- Special Property: Resistant to spalling during cyclic heating and cooling.
- Structure: Metallurgically stable; resists carburization.
Inconel 601 is the material of choice for the most demanding thermal processing equipment. While Inconel 600 is excellent for general heat resistance, the addition of Aluminum in 601 allows it to form a tightly adherent oxide scale that protects the material even when subjected to repeated heating and cooling cycles.
Cyclic Oxidation Resistance
The aluminum content ensures the protective oxide layer remains intact during thermal cycling, preventing the scaling and spalling that destroys lesser alloys.
High Mechanical Strength
Retains high tensile strength and ductility after long-term service exposure at elevated temperatures.
Carburization Resistance
Excellent resistance to carburization and carbonitriding conditions, making it ideal for heat treating baskets and fixtures.
| Element | Content (%) |
|---|---|
| Nickel (Ni) | 58.0 - 63.0 |
| Chromium (Cr) | 21.0 - 25.0 |
| Iron (Fe) | Balance |
| Aluminum (Al) | 1.0 - 1.7 |
| Carbon (C) | 0.10 max |
| Manganese (Mn) | 1.0 max |
| Silicon (Si) | 0.5 max |
*Note: The addition of Aluminum is the key differentiator from Inconel 600.
| Product Form | ASTM / ASME Standards |
|---|---|
| Pipe & Tube (Seamless) | ASTM B167, ASME SB167 |
| Plate, Sheet, Strip | ASTM B168, ASME SB168 |
| Bar & Rod | ASTM B166, ASME SB166 |
| Fittings | ASTM B366, ASME SB366 |
| Forgings | ASTM B564, ASME SB564 |
| Property | Typical Values (Room Temp) |
|---|---|
| Tensile Strength | 80 - 100 ksi (550 - 690 MPa) |
| Yield Strength (0.2% Offset) | 30 - 50 ksi (205 - 345 MPa) |
| Elongation | 30 - 55 % |
| Hardness (Brinell) | 120 - 170 HB |
Thermal Processing
Radiant tubes, muffles, retorts, flame shields, and strand-annealing tubes used in industrial furnaces.
Chemical Processing
Insulating cans in ammonia reformers and catalyst support grids in nitric acid production.
Pollution Control
Thermal reactors in exhaust systems of gasoline engines and waste incinerators.
Power Generation
Superheater tube supports, grid barriers, and ash handling systems.
Need Inconel 601 for High Heat?
We maintain stock of Inconel 601 in plate, sheet, and pipe for immediate high-temperature applications. Contact us for pricing.
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