Aluminum alloy suitable for pistons

An aluminum alloy suitable for high temperature applications consisting essentially of at least 9 to 13 wt.% Si, 3.1 to 6 wt.% Ni, 3 to 5 wt.% Cu, 0.005 to 0.1 wt.% Sr, at least one of the elements selected from Mg, Mn, V, Sc, Fe, Ti, Zn, B and Cr, said elements having the ranges:

• 1 wt.% Mg max., 1 wt.% Mn max., 0.3 wt.% V max., 0.3 wt.% Sc max., 0.25 wt.% Ti max., up to 0.2 wt.% B, up to 0.2 wt.% Cr, 0.5 wt.% Zn max. and 0.6 wt.% Fe max., the remainder aluminum and impurities.

An aluminum alloy suitable for high temperature applications consisting essentially of at least 9 to 13 wt.% Si, 3.1 to 4.9 wt.% Ni, 3 to 5 wt.% Cu, 0.005 to 0.1 wt.% Sr, at least one of the elements selected from Mg, Mn, V, Sc, Fe, Ti, Zn, B and Cr, said elements having the ranges:

• 1 wt.% Mg max., 1 wt.% Mn max., 0.3 wt.% V max., 0.3 wt.% Sc max., 0.25 wt.% Ti max., up to 0.2 wt.% B, up to 0.2 wt.% Cr, 0.5 wt.% Zn max. and 0.6 wt.% Fe max., the remainder aluminum and impurities.

An aluminum alloy suitable for high temperature applications consisting essentially of at least 9 to 13 wt.% Si, 3.1 to 6 wt.% Ni, 3 to 5 wt.% Cu, 0.005 to 0.1 wt.% Sr, at least one of the elements selected from Mn, V, Sc, Fe, Ti, Zn, B and Cr, said elements having the ranges:

• 0.1 to 1 wt.% Mg, 0.05 to 0.2 wt.% Mn, 0.01 to 0.1 wt.% V, 0.05 to 0.1 wt.% Sc, 0.05 to 0.8 wt.% Ti, up to 0.2 wt.% B, up to 0.2 wt.% Cr, 0.05 to 0.2 wt.% Zn and 0.05 to 0.8 wt.% Fe, the remainder aluminum and impurities.

An aluminum alloy suitable for high temperature applications consisting essentially of at least 9 wt.% Si, 3.1 to 7 wt.% Ni, 1.5 to 6 wt.% Cu, 0.005 to 0.3 wt.% Sr, 0.1 to 1.2 wt.% Mg, 0.05 to 0.2 wt.% Mn, 0.01 to 0.1 wt.% V, 0.05 to 0.1 wt.% Sc, 0.03 to 0.12 wt.% Ti, up to 0.2 wt.% B, up to 0.2 wt.% Cr, 0.05 to 0.2 wt.% Zn and 0.05 to 0.8 wt.% Fe, the remainder aluminum and impurities.

An aluminum alloy suitable for high temperature applications consisting essentially of at least 9 to 13 wt.% Si, 3.1 to 6 wt.% Ni, 3 to 5 wt.% Cu, 0.005 to 0.1 wt.% Sr, 0.1 to 1.2 wt.% Mg, 0.05 to 0.2 wt.% Mn, 0.01 to 0.1 wt.% V, 0.05 to 0.1 wt.% Sc, 0.03 to 0.12 wt.% Ti, up to 0.2 wt.% B, up to 0.2 wt.% Cr, 0.05 to 0.2 wt.% Zn and 0.05 to 0.8 wt.% Fe, the remainder aluminum and impurities.

An aluminum alloy suitable for high temperature applications consisting essentially of at least 9 to 13 wt.% Si, 3.1 to 4.9 wt.% Ni, 3 to 5 wt.% Cu, 0.005 to 0.1 wt.% Sr, 0.1 to 1.2 wt.% Mg, 0.05 to 0.2 wt.% Mn, 0.01 to 0.1 wt.% V, 0.05 to 0.1 wt.% Sc, 0.03 to 0.12 wt.% Ti, up to 0.2 wt.% B, up to 0.2 wt.% Cr, 0.05 to 0.2 wt.% Zn and 0.05 to 0.8 wt.% Fe, the remainder aluminum and impurities.

An aluminum alloy suitable for high temperature applications consisting essentially of at least 9 to 13 wt.% Si, 3.1 to 6 wt.% Ni, 3 to 5 wt.% Cu, 0.005 to 0.1 wt.% Sr, 0.1 to 1.2 wt.% Mg, 0.05 to 0.2 wt.% Mn, 0.01 to 0.1 wt.% V, 005 to 0.1 wt.% Sc, 0.03 to 0.12 wt.% Ti, up to 0.2 wt.% B, up to 0.2 wt.% Cr, 0.05 to 0.2 wt.% Zn and 0.05 to 0.8 wt.% Fe, the remainder aluminum and impurities.

An aluminum alloy suitable for high temperature applications consisting essentially of at least 10 to 11 wt.% Si, 3.1 to 4.9 wt.% Ni, 2 to 5 wt.% Cu, 0.1 to 1.2 wt.% Mg, preferably 0.1 to 1 wt.%, 0.05 to 0.2 wt.% Mn, 0.01 to 0.1 wt.% V, optionally, 0.05 to 0.1 wt.% Sc, 0.05 to 0.8 wt.% Fe, 0.03 to 0.12 wt.% Ti, 0.005 to 0.05 wt.% Sr, 0.05 to 0.2 wt.% Sn, 0.1 wt.% max. B 0.20 wt.% max Cr.