radiator tubes

I need to buy some 1 inch aluminum tube for my radiator water lines aircraft spruce has several types available a 5052-0 6061/t6 6061 2024t3 does anyone know which type would work best for my needs ? I will have to be able to bend it to fit any info would be appreciated. Thanks

If you need to bend it I believe you should stick with the 5052. Spruce has tech info section in the aluminum section that deals with hardness of the different alloys.