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Old 01-10-2012, 02:46 PM   #182
Homemade WRX
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Quote:
Originally Posted by Dimman View Post
^ I was thinking of the material specifically. Curious about the 'M' 4340. Since it's only a few alloying elements different than 'normal' 4340, I wouldn't think it would too different price-wise.

But then I'm thinking that if the effort is made to modify 4340 for superior properties it is also likely that it will be made with higher-purity (vacuum re-melt) and therefor more expensive manufacturing processes?
Well condsidering my rods are VAR anyway, that wouldn't be a cost increase. I am vaguely familiar with 4340M but if I recall it actually doesn't contain any elements different from 4340 but lacks a few that 4340 has. I believe it has a higher molydenum percentage as well. So, I'd guess a harder material = more machine cost.

Sorry, I don't really know your answer off the cuff. I guess I'm off to see what I can find on it's properties versus 4340 and 300M. Where I imagine it will fall in cost. But if that's the issue, the $160 difference between 4340 and 300M, I don't think there will be market there...from a part making perspective.
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