I have a housing made out of 356.0-T430 which has a crack in it. Please help me select best filler rod for filling it up? Al 4043 or Al A356? I was going to choose A356 because of similar composition and slightly higher strength properties. What do you guys think? Also remember this is a sand cast a...

I have a small part that needs build up. The part is composed of (see below) and is Brass. The face is worn http://tinypic.com/r/22b9qb/9 and I need help deciding a filler to build it up with then machine. The part is subjected to wear fast. I was looking at Aluminum Bronze but I am not sure about i...