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[Hobart Aluminum]

You don't usually hear about aluminum being used in same conversation as hardfacing because it is inherently soft relative to steel and it's not usually a good idea to take an aluminum filler metal that is 'harder' than the base metal and use it for buildup indiscriminately. You need to take in to account...

[Hobart Aluminum]

I've always viewed stick welding aluminum as the method of last resort mostly due to resulting weld quality and availability of the electrodes. The stick electrodes have a short shelf life when exposed to moisture and is why they usually come in a sealed container. Also, the flux is very corrosive...

[Hobart Aluminum]

Olivero,
Based on the info I could find the GD-A1Si8Cu3 contains 7.5-8.5% Si and 2.0-3.5% Cu. The closest matches I could find on the Hobart Filler Metal Selection Chart were 380 with 7.5-9.5% Si and 3.0-4.0% Cu, and 319 with 5.5-6.5% Si and 3.0-4.0% Cu. The chart lists 2319 and 4145 as the...

[Hobart Aluminum]

AWS A5.10 is the aluminum filler metal specification that gives the manufacturer of the wire guidelines for diameter, packaging, chemistry analysis, testing methods, winding requirements, etc. Currently there are no provisions for listing the strength of the filler metals but we are working on including...

[Hobart Aluminum]

If you go to hobartbrothers.com and click on the 'where to buy' tab, that will show you the distributors in your area that sell Hobart filler metals. Any of those listed can order 4943. Most will say that they've never heard of 4943 but if enough people start asking for it then they will begin stocking...

[Hobart Aluminum]

Ron, please send me your shipping address. [email protected]...

[Hobart Aluminum]

Sorry I'm so late to the game.

A356 would give you the best performance in the as welded condition and if you were going to post weld heat treat since the chemistry will be almost identical to the original casting. If you have A356 rod, use it.

4943 is a very close second...

[Hobart Aluminum]

Here is a snippet from the Hobart Aluminum Filler Metal Selection Chart which is located here:

http://www.hobartbrothers.com/downlo...ecti_TtqVG.pdf



You can see that 5356 is a good option based on the criteria in the chart. 5356 and 4043 are the...

[Hobart Aluminum]

sorry for the late reply

Hey guys,
Sorry for the late reply. I've been on the road pretty much non-stop and I've been struggling to get caught up on emails when I came across Heiti's' email.

I spoke with Bruce Anderson who was the former owner of Maxal (and Alcotec)...

[Hobart Aluminum]

This is the best article that I've found on this alloy and it's written by the guy (Gary Klein) who developed alloy ZR9000.

https://dl.dropboxusercontent.com/u/87530746/Trek%20ZR%209000.pdf

Without knowing the exact chemistry it's impossible to know for sure what the best filler...

[Hobart Aluminum]

Heiti,

Unfortunately there is not a clear cut answer to this one. Hiduminium RR 50 stands for ‘high duty’ aluminum alloy designed by Rolls Royce. It is a casting alloy that has a chemistry of:

Silicon 1.5-2.0%
Iron 0.8-1.4%...

[Hobart Aluminum]

The strength of 4943 is close to that of 5356...Here is a comparison of tensile strength (fillet shear strength is approximately 60% of tensile strength)

4043 = 28ksi
5356 = 38ksi
4943 = 35ksi

Unlike steel, aluminum doesn't get brittle in cold temperatures. Actually,...

[Hobart Aluminum]

If the Alusil alloy is truly A390 then its chemistry is:

16.0-18.0% silicon
0.50% Fe
4.0-5.0% Cu
0.10% Mn
0.45-0.65% Mg
0.10% Zn
0.20% Ti
Remainder aluminum

The German filler rod on the Techolit web page is nothing more than R4047 which...

[Hobart Aluminum]

It's good to see that there is interest in the 4943 alloy on the Miller forum.

Let me introduce myself...I am the Senior Welding Engineer for Hobart Aluminum (formerly Maxal) and am the Product Specialist for the eastern half of the US. I have been with the ITW Welding Group since 1998...