Samael Posted December 11, 2021 Share Posted December 11, 2021 Hello all, Got a piece of leaf spring from a junkyard and I was setting out to make a hot set, so I figured I'd clean up the steel a little bit and suddenly under all the gunk I see these markings: Does this mean anything to anyone? Is it just a date of manufacture? Some kind of serial number? Or is there some way I can learn to tell what kind of steel it is right away before I go spark testing/file testing/etcetc? I'm just trying to learn so when I use leaf spring in the future I'll know what's up. Any assistance is appreciated. Quote Link to comment Share on other sites More sharing options...
ThomasPowers Posted December 11, 2021 Share Posted December 11, 2021 And you are assuming that every other leaf spring in the world is going to be the same? *Test*! (I've run into 1 leaf spring that was low alloy strain hardened and couldn't be quench hardened, of course that was one in 40 years...) Quote Link to comment Share on other sites More sharing options...
Irondragon Forge ClayWorks Posted December 11, 2021 Share Posted December 11, 2021 Best I can do is google JAI springs. That will bring the co up on the first hit. We can't post links to commercial sites so you will have to look through it for contact info. Quote Link to comment Share on other sites More sharing options...
Daswulf Posted December 11, 2021 Share Posted December 11, 2021 Generally car parts companies don't list what steel/ alloy they use. It can't hurt trying to look them up but most likely you need to spark test each part and depending on use maybe hardening tests. Quote Link to comment Share on other sites More sharing options...
Glenn Posted December 11, 2021 Share Posted December 11, 2021 And spark test not only each car part but each car part from each make and year model. We owned one car that had some car parts from one model year and some car parts from another model year on the same vehicle. Came from the dealer that way. Made getting replacement parts a real challenge. Quote Link to comment Share on other sites More sharing options...
Samael Posted December 11, 2021 Author Share Posted December 11, 2021 (edited) 11 hours ago, ThomasPowers said: And you are assuming that every other leaf spring in the world is going to be the same? *Test*! (I've run into 1 leaf spring that was low alloy strain hardened and couldn't be quench hardened, of course that was one in 40 years...) Absolutely not, I was just wondering if there was any standardization that might give a clue as to what kind of steel it is, but based on my grinding it is high carbon. Thank you, IronDragon, that was helpful. I am almost certain I'm dealing with a very high carbon steel at this point because lol, this thing is a xxxxxx to hammer. Edited December 11, 2021 by Mod34 Inappropriate language Quote Link to comment Share on other sites More sharing options...
Whiskeysup Posted December 30, 2021 Share Posted December 30, 2021 Looks like a lot code i.d. and a production date/ shift/ time code. Quote Link to comment Share on other sites More sharing options...
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