Best Brass Polish Out There

**Brick** · August 31st, 2014, 05:29 PM

Originally Posted by Frenchy

French language police here, snipped to get where I wanted.

Then perhaps one day I can impose on you to explain French "dit" names to me.

**39flathead** · August 31st, 2014, 05:43 PM

Originally Posted by Pukindog

Be careful with that brass. Being fired with corrosive primers has deteriated the brass. Not to mention the age; the brass could be very brittle.

Jeff

The first three on his list had corrosive primers, these did not:
SL 43: St. Louis Ordnance Plant, St. Louis, MO
RA 52: Remington Arms, Bridgeport, CT
TW 52: Twin Cities Ordnance Plant, Minneapolis, MN

I'm not a metallurgist, but I thought brass got brittle from being worked repeatedly?

**Frenchy** · August 31st, 2014, 06:08 PM

Originally Posted by Brick

Then perhaps one day I can impose on you to explain French "dit" names to me.

Sent you a pm on Dit, De and Des

Originally Posted by 39flathead

The first three on his list had corrosive primers, these did not:
SL 43: St. Louis Ordnance Plant, St. Louis, MO
RA 52: Remington Arms, Bridgeport, CT
TW 52: Twin Cities Ordnance Plant, Minneapolis, MN

I'm not a metallurgist, but I thought brass got brittle from being worked repeatedly?

Brass, like all metals can get brittle by constant reforming, acids, corrosion, and just plain time.

Oxidation is a major cause of metals losing their flexibility. It takes longer for most metals to lose their flexibility but when you look at items like plastics today, there is what is called a "Expected lifetime" example, that plastic in your refrigerator may have a 10 year expected life time, then it starts to crack out of the blue, your car dash, steering wheel, your shoes and boots.. all have what is called an expected lifetime on which guarantees are based.

Brass and copper are usually measured in life expectancy for water up to 50 years. In bullets, it all depends on times shot, type of propellant and other factors I can imagine.