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Re: Different types of spur gear stock
All I know about the SDP pinion stock is that it isn't your standard carbon steel, it is in fact, 12L14, easy to machine steel. So it's about 60 ksi yield. I don't know the material props of the McMaster steel, but if it's a standard carbon steel it's like to be a ton cheaper per pound, which might explain part of the difference.
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