Heat Resistant Alloys
NAS601
- JISNCF601
- UNSN06601
- DIN/EN2.4851
, comparable to Inconel® 601 Alloy
NAS601 (NCF601, UNS N06601) is a nickel-chromium alloy with an addition of aluminum that provides high mechanical properties at elevated temperatures, and superior resistance to oxidation, carburization and sulfurization. It excels particularly in descaling resistance in cyclic oxidation applications with a high temperature variation, and is therefore used in various parts for heat treatment furnaces, diesel vehicle glow plugs, and the like. Nippon Yakin supplies this product in plate, sheet, and strip forms.
* Inconel is a registered trademark of Special Metals Corporation.| Chemical Composition | 60Ni-23Cr-1Al-0.2Ti |
|---|---|
| Product shape |
 Coil Sheet Plate |
| Workability | Hot working is relatively easy with NAS601. For hot working, temperature should be between 1050 and 1200°C, although light work may be done at temperature as low as 850°C. The temperature range between 650 and 850°C should be avoided as cracking may occur. After hot working, we also recommend cooling through the temperature range of 500 to 800°C as fast as possible to avoid carbide precipita-tion. NAS601 has superior cold workability, similar to Type 310S and Alloy 800. |
| Weldability | As with standard austenitic stainless steels, NAS601 may be welded using techniques such as TIG, MIG, and shield metal
arc welding. For edge preparation, mechanical cutting is desirable. Wide U- and V-groove angles should be used.
Care should be taken to ensure its welding portion is clean as NAS601 is sensitive to surface contamination. AWS ERNiCrFe-11, AWS ERNiCrCoMo-1, AWS ENiCrFe-2, or AWS ENiCrCoMo-1 are commonly used. |
| Heat Treatment | NAS601 is non-hardenable by thermal treatment. Typical heat treatments are as follows: ・annealing: 950°C minimum, rapid cooling ・solution treatment: 1100°C~1200°C, rapid cooling For applications requiring high strength at elevated temperatures, solution treatment is recommended. |
| Applications | Heat treatment fixtures, Muffle furnace, Radiant tube, Chemical plants, Automobile glow plug. |