What are aluminum turbo casting compositions

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I am trying to research what type of casting and what type of aluminum turbo compressors are make out of? Most brands probly use similar mixtures so does anyone have any idias what the composition is?i need help selecting rod.method:tiggas:98argon 2helium
Reply:I used 4043 on mine and has never given me any trouble.My name's not Jim....
Reply:thank youbut i wanna properly match filler to base...thats why i wanna know what the casting is, i cant find any info on iti email Precision and Garrett but still no respond
Reply:Aluminium alloys are rarely welded with a filler that matches the chemical composition of the base alloy. There's no 6061 filler wire for example but a range of filler alloys that can be  used when welding 6061. 354-T61 (AlSiCu + Mg) gets some use for compressor turbines. Compressor housing will almost certainly be a silicon rich aluminium alloy, maybe AlSiCu, maybe AlSiMg. Without knowing the exact alloy 4043 (as suggested) would be the best choice. If it's a copper bearing alloy 4145 may be a better match
Reply:so what your saying is that the housing is 1100?because 4043 filler is suggested for 1100 Alloy, for strength and least cracking tendency...
Reply:No, how on earth did you come up with that? 4043 is compatible (and suggested for use) with a huge number of alloys. 1100 is a wrought (not casting) comercially pure aluminium best welded with 1100 filler typicallyCompressor housing is almost certainly a silicon rich casting alloy. Don't know the exact alloy used by various manufacturersLast edited by hotrodder; 12-14-2009 at 07:48 PM.
Reply:Originally Posted by hotrodderNo, how on earth did you come up with that? 4043 is compatible (and suggested for use) with a huge number of alloys. 1100 is a wrought (not casting) comercially pure aluminium best welded with 1100 filler typicallyCompressor housing is almost certainly a silicon rich casting alloy. Don't know the exact alloy used by various manufacturers
Reply:you shouldn't have to worry about cracking.  the compressor discharge doesn't get that hot.  I would have to guess that it doesn't reach temps much higher than 200 degrees. The turbine side is a different story alltogether though, but that is not made from aluminum.
Reply:Even if you could narrow down the range of casting alloys possibly used for said components.....and could find out what oddball wire you are supposed to use by the books....unless you have an awful lot of money to spend buying the MINIMUM AMOUNT of that oddball alloy that you can get from the mill, you will just have to end up using one of two normally available alloys, either 4043 or 5356....don`t know about your local LWS but mine does n`t stock a lot of weird stuff...last time I needed oddball alum wire I had to buy 10lbs. which isn`t horrible but is not cheap either.Anyways I think it is hard to go wrong with 4043 for a cast alloy with the high silicon content, AL345 works nice too if you stick weld.just found this too    * The high-purity 1xxx series alloys and 3003 are easy to weld with a base alloy filler, 1100 alloy, or an aluminum - silicon alloy filler, such as 4043.    * Alloy 2219 exhibits the best weldability of the 2xxx series base alloys and is easily welded with 2319, 4043 and 4145 fillers.    * Aluminum-silicon-copper filler alloy 4145 provides the least susceptibility to weld cracking with 2xxx series wrought copper bearing alloys, as well as aluminum-copper and aluminum-silicon-copper aluminum alloy castings    * The cracking of aluminum-magnesium alloy welds decreases as the magnesium content of the weld increases above 2%.    * The 6xxx series base alloys are most easily welded with the aluminum-silicon type filler alloys, such as 4043 and 4047. However, the aluminum-magnesium type filler alloys can also be employed satisfactorily with the low-copper bearing 6xxx alloys when higher shear strength and weld metal ductility are required.    * The 7xxx series (aluminum-zinc-magnesium) alloys exhibit a wide range of crack sensitivity during the welding. Alloys 7005 and 7039, with a low copper content (<0.1%), have a narrow melting range and can be readily joined with the high magnesium filler alloys 5356, 5183 and 5556. The 7xxx series alloys that possess a substantial amount of copper, such as 7975 and 7178, have a very wide melting range with a low solidus temperature and are extremely sensitive to weld cracking when are welded.
Reply:Originally Posted by Nick ZHow on earth? i look up 4043..... aaaaaand it is suggested for welding 1100 thats how
Reply:I'd strongly recommend asking this question on TheTurboForums.  Many vendors and OEM reps on there.
Reply:As far as I know 4340 is the best among all and it will give the best result if you want to get good results.......rhce dumps\network+ certification\jncia\juniper certification