Nickel alloys / UNS N06601
Inconel® 601 adds aluminium and more chromium to the 600 base, giving outstanding resistance to oxidation and scaling up to about 1,200 °C.
- UNS N06601
- W.Nr. 2.4851
- Spec ASTM B168
- Density 8.11 g/cm³
Also known as / equivalents
| System | Designation |
|---|---|
| UNS | N06601 |
| W.Nr. | 2.4851 |
| EN | NiCr23Fe |
| Also known as | Alloy 601, 2.4851, NiCr23Fe |
Chemical composition
| Element | Min % | Max % |
|---|---|---|
| Ni | 58.0 | 63.0 |
| Cr | 21.0 | 25.0 |
| Al | 1.0 | 1.7 |
| Fe | Bal. | — |
| C | — | 0.10 |
| Mn | — | 1.0 |
| S | — | 0.015 |
| Si | — | 0.5 |
| Cu | — | 1.0 |
Mechanical properties
| Property | Value |
|---|---|
| Tensile strength (min) | 550 MPa (79.8 ksi) |
| Yield strength, 0.2% offset (min) | 205 MPa (29.7 ksi) |
| Elongation in 50 mm (min) | 30 % |
Physical properties
| Property | Metric | Imperial |
|---|---|---|
| Density | 8.11 g/cm³ | 0.293 lb/in³ |
| Magnetic response | Non-magnetic | — |
Available forms & specifications
| Form | Specification | Size range |
|---|---|---|
| Sheets & plates | ASTM B168, B443, B409, B424, B127, B162 | 0.3 mm – 6 mm |
| Seamless pipe & tube | ASTM B167, B444, B407, B423, B165, B161 | 1/8" – 24" NB |
| Bars & rods | ASTM B166, B446, B408, B425, B164, B160 | 3 mm – 500 mm |
| Flanges & forgings | ASTM B564 | 1/2" – 48" NB (larger on request) |
| Buttweld fittings | ASTM B366 | 1/2" – 48" NB |
Corrosion & temperature resistance
Nickel-based alloys resist caustic alkalis, chloride stress-corrosion cracking and many acids, and keep their strength and oxidation resistance at temperatures where stainless steels fail.
Applications
Inconel® 601: Radiant tubes, muffles, combustion hardware. Chemical and petrochemical plant, sour-gas and oilfield equipment, furnace and heat-treatment hardware, power generation, marine engineering and aerospace components.
Inconel® 601 vs Inconel® 600
| Inconel® 601 | Inconel® 600 | |
|---|---|---|
| UNS | N06601 | N06600 |
| Key property | Oxidation resistant to ~1,200 °C | High-temperature Ni-Cr-Fe |
| Typical use | Radiant tubes, muffles, combustion hardware | Furnace parts, heat-treating, nuclear, chemical |
| Cr (wt %) | 21.0–25.0 | 14.0–17.0 |
| Ni (wt %) | 58.0–63.0 | 72.0 |
| Mo (wt %) | — | — |
| C (wt %) | ≤ 0.10 | ≤ 0.15 |
| Tensile / yield (min, MPa) | 550 / 205 | 550 / 240 |
Frequently asked questions
What is the UNS number of Inconel® 601?
Inconel® 601 is designated UNS N06601 (W.Nr. 2.4851, EN NiCr23Fe).
What is Inconel® 601 used for?
Oxidation resistant to ~1,200 °C. Typical uses: radiant tubes, muffles, combustion hardware.
Is Inconel® 601 magnetic?
Non-magnetic.
In which forms can I buy Inconel® 601 from Rajkamal Metals?
Coils & Strips, Sheets & Plates, Pipes & Tubes, Round Bars & Rods, Flanges, Buttweld Fittings, Socket Weld & Threaded Fittings, Fasteners, Ferrule / Instrumentation Fittings, Dish Ends, Custom Orders. Sizes as per standard; other sizes on request.
Do you supply a Mill Test Certificate with Inconel® 601?
Yes. Actual values are given in the Mill Test Certificate (EN 10204 3.1) supplied with each order.
What is the difference between Inconel® 601 and Inconel® 600?
Inconel® 601: oxidation resistant to ~1,200 °c. Inconel® 600: high-temperature ni-cr-fe. See the comparison table on this page.
Last updated: 30 October 2026. Grade names identify the supply range; designations are not engineering equivalents. Availability, make, origin and documentation are confirmed at quotation.
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