Subject	Re: Welds look good... probably not going to see any crack
Posted by	Quick_Z on May 06, 2015 at 10:51 PM
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In Reply To	Welds look good... probably not going to see any crack posted by dTb on May 06, 2015 at 10:36 PM
Message	I have no idea about the composition, they seem like hardened chrome-moly as far as strength/hardness goes. They seem very well hardened, the drill was made TiN coated so it did well, but my 1/8" NPT tap was just regular uncoated HSS, and it barely cut this steel at all, that's probably why it went awry and went in at an angle, I wasn't very careful because most drilled holes tap very easily, this didn't. Be EXTREMELY careful when you start the tapping so it goes straight at first, that's the most important part. I'm almost 99% sure it's very high quality carbon steel, maybe someone else can chime in about the exact composition.
Follow Ups	Mike Smith Headers EGT tapping gone wrong, help/comment plz - Quick_Z 21:54:12 05/06/15 Welds look good... probably not going to see any crack - dTb 22:36:36 05/06/15 Re: Welds look good... probably not going to see any crack - Quick_Z 22:51:45 05/06/15 It's not tick enough weld to need stress relieving, ~1/8" (n/m) - Quick_Z 23:00:32 05/06/15 Looks good, should have used the bung from the beginning :-) (n/m) - BlackholeZ 23:10:50 05/06/15 Do you have experience welding castings? - -Grimm- 10:24:17 05/07/15 Re: Do you have experience welding castings? - Quick_Z 13:11:33 05/07/15
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