How tough are Al tanks versus steel tanks?

[The Kraken]

Hey, Big John, you know you're hard to see in that black wet suit below 15 feet.

 

[jonnythan]

Dude, my drysuit has these super reflective patches for visibility.

Trouble is, Mr Redneck with a rifle seems something shiny moving below the surface, so what do you think he'd do?

 

[The Kraken]

I guess I forgot to adjust for refraction . . .
Booger !!!!

 

[aquaoren]

I dive at a quarry in VT sometimes, and trust me, the chances are pretty good.

http://www.ngray.com/galleryalbums/scuba_bigblue_10-03/PICT2598.jpg

Hehe, please remind never to go diving with you in your part of the woods

 

[jonnythan]

Hehe, please remind never to go diving with you in your part of the woods

Welcome to America

Last time I was out there, the group of 6 of us had 5 different guns to pass around and shoot. We must have gone through 1000 rounds that day

 

[H2Andy]

Trouble is, Mr Redneck with a rifle seems something shiny moving below the surface,
so what do you think he'd do?

in Jacksonville? throw a surprlus US Army grenade in.

of course, they have to yell "fire in the hole" afterwards, cause that's how
they do it in the movies

then they wait a few minutes... no "boom"


Bubba: Dang it! It done and malfunshoned

Bubba's Daddy: Told ya to plug that big roun' hole in the bottom of the thing!
water prolly got in it and ruin' it!

 

[triton94949]

Dude, my drysuit has these super reflective patches for visibility.

Trouble is, Mr Redneck with a rifle seems something shiny moving below the surface, so what do you think he'd do?

I took those reflective patches off my black drysuit. Not because I am worried about Joe Redneck and his 30-06 but because I am more worried about Joe Landlord and his sharp teeth.

And you see more sea life if you are a motionless black hole in the water without reflective patches.

 

[triton94949]

Welcome to America

Last time I was out there, the group of 6 of us had 5 different guns to pass around and shoot. We must have gone through 1000 rounds that day

A person is much more likely to get shot by a handgun in America than by a 30-06.

I would re-run the test.

 

[jonnythan]

A person is much more likely to get shot by a handgun in America than by a 30-06.

I would re-run the test.

Well there was only one handgun in the group... no 30-06's though. A few .22 rifles, a .45 handgun, and some larger caliber rifle.

 

[hdtran]

Aluminum tanks are thicker and steel thiner due to steels higher tensil strength and being less brittle. I can see the bullet hitting the stell and causing a bit of elastic flow cushoining the shot as oppesed to AL not wanting to flow.

Any thought on this or corrections ?

Yes, let me state that the toughness of Aluminum vs. Steel is extremely dependent on the alloy and temper. 1100 Aluminum, for example, will elongate forever. I believe Aluminum tank are made from a 6000 series alloy, and the temper state is one of the work-hardened tempers (2-3 digits). The specific measurement that you want is the Charpy or Izod toughness. (Minor differences between the two; Charpy is more likely the one you want). (And no, Izod test has nothing to do with alligators )

The tensile strength of a hardened aluminum alloy can be higher than that of a soft steel (I can quote you alloys), but since I have no idea what alloys are used in tanks, I'll shut up here...