which welding method is strongest? tig or mig? (1 Viewer)

[picoraspy]

My knowledge of welding is very low..so i have to ask a basic question. I have a chassis I worked up in solidworks and ready to fabricate for offroad use for a special project.

Lots of debate about mig and tig online, which one is stronger in your opinion?

also do you see any structural issues with this chassis design carrying 2,500 lbs with 1/4 steel tubing?

Thanks

Pico

 

[KLF]

I know that dragster and stock car frames and cages are TIG'd.

 

[PAToyota]

A properly executed weld - whether done in MIG or TIG and using similar filler rod/wire - is going to be equally strong.

 

[TRAIL TAILOR]

Each welding process (MIG/TIG) has it's place, and each is best suited to certain base metal, process fluids or gases and environments. MIG/GMAW has a tendency to be more forgiving for a beginning/novice welder. Where TIG/GTAW is a more controlled process for heat input and penetration control to the base metal. MIG/GMAW is prone to have more of a chance for lack of fusion between steel being welded.

I've used both processes for years. For fast production welding I prefer MIG/GMAW. For precision and cleanliness I will choose TIG/GTAW any day of the week.

I've seen both types of weld processes used in code work without problems. In the end it depends on the skill of the welder. My choice would be TIG over MIG for strength personally.

J

 

[Jetboy]

Like the others have said. Either is adequate for a trailer frame in mild steel. Practically every trailer frame commercially build is MIG welded. The frame on almost every vehicle is MIG welded. If done well, there shouldn't be an issue with strength of the weld. MIG is a LOT faster. For a project like this, I wouldn't even consider TIG welding it unless you really want to waste time or want to practice TIG welding.

 

[picoraspy]

great advice! thanks to all.

 

[picoraspy]

how about coating? does everyone powdercoat normally?

 

[Jetboy]

how about coating? does everyone powdercoat normally?

Powdercoating is probably the best coating for something like this. It's very durable and lasts a long time. Depending on price, it may be overkill for your trailer. I'd expect to pay around $500+ to have the entire frame powder coated. It all depends on how long you intend to keep it and what your budget is. Good quality paints can be very durable as well. They are less expensive, but not "cheap" by any means.