I was looking at some old blueprints from a 1920s plant and found a weld spec that surprised me

I was helping clean out a storage room at the old steel mill in Gary, and we found a stack of original construction drawings. One page showed the boiler drum assembly and called for a 3/8 inch fillet weld, but the note said they used a 6010 rod for the entire root pass. I always thought 6010 was a much newer electrode. It made me wonder how many of our 'modern' methods are actually just old tricks with new names. Has anyone else run into specs from that era that seem ahead of their time?

3 comments

3 Comments

wendy_ross713mo ago

Honestly that's not that wild. 6010 rods were around way before the 20s, they just called them something else back then. A lot of early arc welding used bare wire or simple coatings. Finding it on a print from that decade tracks. We act like everything was stone age back then but they had the basics figured out. It's cool to see the old specs, but I doubt it changes much about how we do things now.

the_robin3mo agoMost Upvoted

But they totally changed the game with modern coatings.

emmam6714d ago

Oh, I have to disagree a bit with Wendy_ross71 on that. Those old coatings were just crude lime or clay, not the modern flux blends we rely on for strength and consistency. The basics were there, sure, but the newer coatings really did change the game for reliability.