Alloy Information for Inconel 601

Chemical Analysis
Ni Nickel
58 – 63
Cr Chromium
21 – 25
Al Aluminum
1.0 – 1.7
C Carbon
0.10 max
Mn Managanese
1.0 max
S Sulfur
0.015 max
Si Silicon
0.50 max
Cu Copper
1.0 max
Fe Iron

General Characteristics of Inconel 601

Inconel 601 is a general-purpose nickel-chromium-iron engineering material for applications where resistance to heat and corrosion is required. The alloy is very resistant to high-temperature oxidation – up to 2200 º F – and has good resistance to aqueous corrosion. The alloy retains good strength at elevated temperatures.

Alloy Inconel 601 was designed to withstand high temperature exposure and severe corrosive conditions. The alloy is not embrittled by long exposure to high temperatures, thanks to the nickel, chromium and aluminium contents that together form a protective and adherent oxide film.


The heat resistance and corrosion resistance of Inconel 601 make it suitable for furnace parts in such operations as annealing, carburizing, nitriding and other heat-treatment operations. The alloy is used in chemical processing equipment and petrochemical processing equipment where its excellent corrosion resistance comes into full play. The alloy is also used in nitric acid production.

Further important applications of this alloy are to be found in the pollution control, aerospace – where it is used in jet-engine igniters – and power generation industries.

Forging Inconel 601

Inconel 601 is best forged, for large deformations, between 2250 and 1900 º F, but forging may be continued to 1650 º F. The alloy shows low ductility between 1600 and 1200 º F and should not be forged in this temperature range.

Designations and specifications of Inconel 601 forgings include DIN 17754 and ISO 7725.

Heat Treatment

Inconel 601 cannot be hardened by heat treatment and only cold working will improve room-temperature strength.

The alloy is either annealed at around 2000 º F or solution treated at around 2100 º F, both followed by air cooling. In both cases the material must be cooled as rapidly as possible through the range 1400 to 1000 º F. Solution treating is the treatment normally applied to Inconel 601 parts involving exposure to temperatures of 1000 º F and higher, annealing to parts exposed to temperatures below 1000 º F.


All standard machining operations may be performed on Inconel 601. Best machinability is obtained in the solution-treated condition.


Alloy Inconel 601 may be welded by all commercial methods. The welding method and filler metals used will be dependent upon the service conditions to which the final fabricated part will be subjected.

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