Tempering slip-joint springs

I should know this but I don't. The data sheets that I have stop at or around 52-55 RC. I'm working on some springs in A2 & AEB-L and want to get them down to approx. 48 RC. Anyone know what I need to draw them at to get them down to that. I'll be hardening the A2 @ 1775 and the AEB-L @ 1980. Both will be plate quenched and spend the night in LN.
 
The reason you won't find information on A2 for springs is that it makes a very poor spring steel. It is not really appropriate steel for flexing.
 
You're right , no temp. given.
I've done 2 springs in A2 so my experience is limited to say the least.

Looked at my notes:
1080* 2 hrs. = RC 52
1100* 1 hrs. =RC 50-51

2nd spring:
1125* 1 hrs.= RC 47-48

Hope this helps
Mark
 
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