Aluminium Strontium alloy(AlSr alloy) 1> Grade: Al-Sr5,Al-Sr10,Al-Sr15,Al-Sr20 2>Package: Standard export package. 3>Usage: These products are widely applied to making refractory steel,compound materials for automobile founding, guns, artillery, rokets,satelliter,aeroplane, warship and armour-piecing bullet. 4> Specification: Alloy Specification(%) Sr Si(max) Fe(max) Al Al-Sr 5 4.5—5.5 % 0.2% 0.3% Balance Al-Sr 10 9%--11% 0.2% 0.3% Balance Al-Sr 15 14%--16% 0.2% 0.3% Balance Al-Sr 20 18%--20% 0.2% 0.3% Balance