Welding question

['74 UA FJ]

Post a pic of the brackets.

 

[Pin_Head]

I doubt that it will be a problem for mild steel (less than .15% carbon, which is the most commonly used steel). It doesn't contain enough carbon to harden or become brittle upon quenching and the parts would need to be quenched when red hot or above about 1650 degrees F, which isn't easy to do when welding on thin metal. It air cools to quickly. Don't obsess about it. Get a copy of "Metals and How to Weld them" from Lincoln Electric for $10. We used it as one of the text books.

 

[Spook50]

I doubt that it will be a problem for mild steel (less than .15% carbon, which is the most commonly used steel). It doesn't contain enough carbon to harden or become brittle upon quenching and the parts would need to be quenched when red hot or above about 1650 degrees F, which isn't easy to do when welding on thin metal. It air cools to quickly. Don't obsess about it. Get a copy of "Metals and How to Weld them" from Lincoln Electric for $10. We used it as one of the text books.

Thanks for the recommendation. I'll definitely have to pick that up. I know next to nothing about the actual compositions of different metals but I want to learn. I figure the more I can learn about that, the better welder I can be.

'74, I've got pics in my thread here: https://forum.ih8mud.com/60-series-wagons/469658-making-new-brackets-my-mazda-seats.html

 

[Pin_Head]

The ASTM A500 steel tube you used is a carbon alloy and is heat treatable and should not be water quenched when it is red hot.

It is useful to know what you are welding on and how to weld different types of steel.

 

[Spook50]

The ASTM A500 steel tube you used is a carbon alloy and is heat treatable and should not be water quenched when it is red hot.

It is useful to know what you are welding on and how to weld different types of steel.

Do you think it affected the strength enough to be a concern for a seat bracket?

Sent from a phone, and stuff

 

[Pin_Head]

Do you think it affected the strength enough to be a concern for a seat bracket?

How would I know? I don't know what you did to it.

 

['74 UA FJ]

Those things are going to fail and throw you through the windshield the first time you a ram a Geo off of the road.

 

[Spook50]

How would I know? I don't know what you did to it.

Ha, touche'. Dipped them in water to cool them after I welded. Though they weren't red hot, so I honestly don't know if that'd make a difference or not.

Sent from a phone, and stuff

 

[Pin_Head]

It needs to be red hot (approximately 1300F) to harden low carbon alloys like A500. You should be OK.

 

[Spook50]

It needs to be red hot (approximately 1300F) to harden low carbon alloys like A500. You should be OK.

Cool beans. I definitely gotta get that book so I can learn more about what I'm doing....

Sent from a phone, and stuff

 

[SM Racing]

I Get a copy of "Metals and How to Weld them" from Lincoln Electric for $10. We used it as one of the text books.

That is funny, I found an old copy of this at a used book store last weekend. my version was copyrighted in 1965. Its a nice hardback book. Should last for years.

 

[JohnR]

You should also get the "bible" Lincoln Arc welding handbook.. https://ssl.lincolnelectric.com/lincoln/apdirect/item.asp?prodnum=PH

Alot of information on managing distortion, covers all type of electric welding, etc.. Well worth the price.