Heat treated?

Hi I have just heated up my front folks to remove the mud guard bosses but have just had a thought. Have I just ruined them? Are they heat treated? Do you think they will be ok?
Thanks for any advice!

how much heat

and what are they made off ?

how much heat

and what are they made off ?

Carbon.

well as long as you didn't get them over 3500 degrees C you'll be fine

Sorry I wasn't very clear. They are steel it's a 1960's or 70's raleigh lenton. I heated them up enough to melt the braze ( probably to much) the steel was red in places :-(

you may well have annealed the steel
http://www.technologystudent.com/equip1/heat3.htm

mud guard bosses are quite close to the fork crowns

Ok thanks. I think it's probably safer if I start looking for some new forks then!

Given that the bosses were originally brazed / silver soldered on, you might be ok: you won't (shouldn't?) have used a higher temperature than that used when originally fitting them and I can't imagine Raleigh re-hardening and tempering after assembly brazing?

Unless you've used some sort of large third-world methane-air torch and brought the whole lot to red heat?

waits for contradiction by someone who knows better...

before you do anything drastic wait for a couple more answers and maybe provide a bit more info
the steel type
a picture or two

it may well be perfectly fine

A photo in the 'Any Question Answered' thread would give might provoke a response from Tester or one of the more serious engineering types?

Here's a photo or 2 .

I used a wire brush to remove the burnt paint.
Thanks again

is there enough carbon in the steel used in the bike frame in order to harden it? Doesn't look like there is any tempering colours on the steel.
Try and scratch the steel with a file. That will tell you if its been hardened or not.

What did you use to heat it?
I'd say you are fine.