Chromium steel?


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PILMAN
August 22, 2007, 05:39 PM
I was just wondering about this, I was reading up about the USP on wikipedia and I saw this.

As the USP was developed at the same time as the SOCOM MK23, the pistol underwent much of the same rigorous testing. The barrel is cold-forged from chromium steel for increased life. The USP barrels are a polygonal profile to further increase muzzle velocity and barrel life. During testing, a bullet was deliberately lodged in a USP barrel. Another cartridge was then fired into the obstructing bullet. The second bullet cleared the barrel, resulting in a barely noticeable bulge. The pistol was then fired for accuracy and the resulting group measured less than 4 inches at 25 meters.

what is the advantage of chromium steel to other steel and what makes it different?

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Navy joe
August 22, 2007, 05:54 PM
It is just another alloy of steel, most all metals in use are alloys that have small amounts of other metals mixed in them to obtain desired properties. In the case of chromium steel the benefit was most likely increased tensile strength, and the ability to be hardened to what the barrel maker desired in key wear areas.

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