@ kiwi2wheels (sorry didn’t get your real name) Thanks for the tip, I’ll give Barri a buzz and ask if he can help by recommending a heat- treater. @ Arno, no hard feelings here! I realize that many people on forums are lazy a*#es, cough up a problem without doing any research themselves at all and l...

Thanks Mike!

Cheers
Andy

@Raymond thanks for the reply and the very informative link. Lots of insights! Really appreciate that! @Arno Thanks, but I know what 4140 is. ;) I am trying to understand the key facts of the "US-annealing procedure". As I wrote I have been searching down info on the process of annealing a...

Hi Vic. Sorry, I probably didn't express myself correctly. 4140 is popular in Germany but classified as not/or hardly weldable - so resellers don't have much info on the matter. I import small amounts of 4140 cold rolled annealed square stock as it is not obtainable here. It comes in handy that I ne...

Hi Coldman, thanks for your reply. Much appreciated. Actually 4140 is classified as not or at least as hardly weldable in Germany. I have talked to many renown institutions and welding schools. All suggest not to weld 4140. Most of the teachers can't weld it themselves. We have totally different mat...

Hi all. When reading these lines please keep in mind I am from Germany. Some things that may appear to be obvious to you are not on this side of the pond. I have had some parts machined that need welding and apparently the machine shop used “quenched and tempered”(!?) 4140 (tensile strength 900-1100...

Hi all, my name is Andy and I live in Germany. I spent a few years of my life in the USA and really miss being there. As a hobbyist I do sheet metal work and welding on/for (mainly) my bikes and classic cars. I also enjoy designing/making my own tools and machines for my panel work. I practice O/A, ...