Quote:
Originally Posted by swdr
How? A new Glock in the same caliber, size and weight as a Kimber Ultra CDP? I wonder if Kimber could lower the CDP weight by using some plastic?
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Maybe. Aluminum is about 2.81 g/cc. Glock uses a cusom nylon 6 blend, it's somewhere in the range of 1.24 g/cc. But straight Nylon 6 has a yield strenght of about 12000-13000 psi (it's safe to assume Glock's formula is better than that). Crappy sand cast 356 T6 aluminum yields at 24,000, and machined 7075 T6 (like Kimber uses) yields at 67,000 psi
So nylon's density is lower, but the strength for any given weight is much better for aluminum. Which is lighter in the final application depends on what constraints you're engineering to.