Bulletproof Cast Aluminum Thickness...

C

cchardwick

New member
I'm thinking of making a bullet proof shield out of cast aluminum. I have the equipment to cast aluminum and a bunch of old lawnmowers and scrap aluminum I can use, but I can't seem to find any info on how thick the aluminum must be to stop a .223. Anyone know where I can get this data? I know I can cast a bunch of different thicknesses and just take it to the range and test it but I was hoping I could find some specs to make it easier. I did a Google search but didn't come up with anything.

LBAArticle1Image5.jpg
 
Don't really know, but I would question the average man's ability to hold on to the thing when it is hit by a round.
 
I doubt if those shields are just aluminium. Aluminium must be only a shell with kevlar or some other composite sandwiched inbetween it. Betcha Denny Hansen would know.
 
I doubt casting is the way to go. It will be very difficult to get consistent thickness, and just plain aluminum won't stop much in the way of bullets.
I'm sure those shields are made of hardened aluminum sheet and kevlar.
 
...I would question the average man's ability to hold on to the thing when it is hit by a round.
Click to expand...
Assuming the plate weighs more than the rifle that fired the round then given the way that conservation of momentum works holding the plate when it's hit is going to be easier than holding onto the rifle that fired the round.
...how thick the aluminum must be to stop a .223.
Click to expand...
Impractically thick. As pointed out, it's going to take more than just a thick piece of metal to stop rounds if you expect this to be something that a person can lift.
 
Rough guess this shield will weigh around 300 pounds. Probably 4'' thick. Now, how about side and rear protection? Be afraid....very afraid.
 
You must log in or register to reply here.
Back
Top