FeCrAl Cr27Al7Mo2 wire bar strip
Overview
Limiting Chemical Composition, %
Chromium..............................................................................................................................................................................26.5--27.8
Aluminum..................................................................................................................................................................................5.0--7.0
Carbon.....................................................................................................................................................................................0.05 Max.
Nickel........................................................................................................................................................................................0.60 Max.
Silicon.......................................................................................................................................................................................0.40 Max.
Manganese.............................................................................................................................................................................0.20 Max.
Phosphorus...........................................................................................................................................................................0.025 Max.
Sulfur.......................................................................................................................................................................................0.025 Max.
Molybdenum........................................................................................................................................................................1.80--2.20
Iron...............................................................................................................................................................................................Balance.
Physical Constants
Density |
7.1 g/cm³ |
Resistivity |
1.53 μΩ·m |
Tensile strength |
≥680 Mpa |
Bending frequency |
>5 |
Melting piont |
1500℃ |
Elongation |
>10% |
Characteristic
High resistivity: suitable for the manufacture of electric heating elements.
Excellent oxidation resistance: It has high oxidation resistance and thermal strength below 1250℃, and the surface will form an Al2O3 oxide film.
Low temperature coefficient: Resistance value varies little with temperature.
Ferritic structure: the alloy is a ferritic structure after annealing, but the structure is unstable during use, and 475℃ is a brittle temperature zone.
Application
Electric heating element: mainly used for heat treatment furnace with temperature below 1250℃, especially suitable for continuous furnace, such as stainless steel solid solution furnace.