7GA (0.144 in) 875/A1 wire. 1 lb = 19.91 ft
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875/A1 wire is a ferritic iron-chromium-aluminium alloy (FeCrAl alloy) for use at temperatures up to 1400°C (2550°F).
The alloy is characterized by high resistivity and very good oxidation resistance.
This (FeCrAl alloy) alloy is known to have higher surface loading capability, higher resistivity and lower density than (NiCr) alternatives which can translate to less material in application and weight savings. The higher maximum operating temperatures can also lead to longer element life. Iron Chrome Aluminum alloys form a light grey Aluminum Oxide (Al2O3) at temperatures above 1,000°C (1,832°F) which increases corrosion resistance as well as acts as an electrical insulator. The oxide formation is considered self-insulating and protects against short circuiting in the event of metal to metal contact.
Iron Chrome Aluminum alloys have lower mechanical strength when compared to materials as well as lower creep strength.
Typical applications for 875/A1 are electrical heating elements in high-temperature furnaces for heat treatment, ceramics, glass, steel, and electronics industries.
Each spool/package of wire is supplied with a label or tag showing the following data:
alloy type, nominal size, net weight, heat number and part number
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Disclaimer: Recommendations are for guidance only, and the suitability of a material for a specific application can be confirmed only when we know all the actual service conditions.