Extruded material of a free-cutting aluminum alloy excellent in embrittlement resistance at a high temperature
AssigneeFurukawa-Sky Aluminum Corp.
InventorsKensuke Mori, Kazuo TAGUCHI
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Abstract
An extruded material of a free-cutting aluminum alloy excellent in embrittlement resistance at a high temperature, containing from 3 to 6% by mass of Cu and from 0.9 to 3% by mass of Bi with the balance being Aluminum and inevitable impurities, wherein a temperature for reducing the Charpy impact test value to half of the value at room temperature is 180° C. or more.
Claims2
An extruded material of a free-cutting aluminum alloy excellent in embrittlement resistance at a high temperature, comprising from 3 to 6% by mass of Cu and from 0.9 to 3% by mass of Bi with the balance being Aluminum and inevitable impurities, wherein a temperature for reducing the Charpy impact test value to half of the value at room temperature is 180° C. or more.
The extruded material of a free-cutting aluminum alloy excellent in embrittlement resistance at a high temperature, further comprising one or two kinds of elements selected from Si in a proportion from 0.1 to 1.5% by mass and Fe in a proportion from 0.1 to 2.0% by mass.
Dependencies are inferred from the claim text.