Aluminum,Tense
Shall consist of all clean aluminum castings which may contain auto and air plane casting but no ingots, and to be free of iron, brass, dirt and other non-metallic items.
Oil and grease not to total more than 2%
Shall consist of all clean aluminum castings which may contain auto and air plane casting but no ingots, and to be free of iron, brass, dirt and other non-metallic items.
Oil and grease not to total more than 2%