I thought that the Panzerfuast penetrated 300mm, but I'm not sure, I havent looked it up in a while.
Since there still seems to be some misconception on Shaped charges, Im gonna repost my repost that was a repost of a post that I made on shaped charges.
"Alright, alright, Im gonna have to clear some things up. The information yall are describing about HEAT warheads is completely wrong. HEAT rounds dont direct the explosions in one direction, in fact, thats about as extreme from the truth as you can get. Before I explain what HEAT rounds actually do, let me explain about the explosive properties. HEAT rounds are still HE. The explosion goes in all directions. The reason for not being the best at anti- personal is because the HEAT casings arent designed to fragment properely. An example of the comparison would be a hand grenade and a pipe bomb with out shrapnel (nuts bolts etc.) loaded inside. The hand grenede is designed to fragment, hence it kills people with shrapnel. The pipe bomb, although the casing is metal, blows up, sending reletively little shrapnel into the air (in comparison to the hand grenade). The pipe bomb, just like the HEAT round, still has as much EXPLOSIVE power as the hand grenade.
So the point of this part of my explanation is, yes, AT weapons (bazooka, Panzerschreck, etc.) can effectively be used against light fortifications (earth bunkers, wooden bunkers, buildings, light structures, etc.). In fact, the old U.S. LAW weapon was used in vietnam as an anti-bunker weapon, as well as the modern U.S. AT4 is used against structures in Iraq as well as caves and the like in Afghanistan.
Now onto the AT properties of HEAT weapons. Im gonna draw some pictures but Im going to show what really happens, as well as the different properties of the different shapes. Here we go.
http://img54.imageshack.us/my.php?image=heat9su.png
http://img73.imageshack.us/my.php?image=heat26ef.png
Ok, Heres what the first picture shows (Ill explain 2 and 3 later)
1 is the explosive filler
2 is the metal liner
3 is the Standoff fuse
The Second picture shows how the metal liner collapses and the direction of FORCES (Ill explain this later too) (This picture doesnt matter anymore)
And the Third picture shows the penetration of the liner for the different liner shapes. (this is now the second picture)
From top to bottom then far right
- Self forging fragment charge
- the Schardin Charge
- P charge
- Hollow Charge
Ok, now for the explanations.
A HEAT (hollow charge) round, is essentially a cylinder of HE, with the front of the explosive shaped conically inward. In this cavity is a conical metal liner, fitted very tightly. At the end is the standoff fuse (explained later). The HE is detonated in the rear of the explosive, creating a high-pressure shockwave that heads to the front of the round reaching the thin tip of the liner first at speeds of about 8000 m/s. As the shockwave passes over the liner, it forces it to collapse, starting at the narrow tip. The walls of the liner slam against each other, creating pressures so far above the yeild strenght of the liner material that the metal flows in a fluid fashion, even though the temperature is below the melting point of the material. So now a long jet of liner shoots forward through the open end of the cone. This jet is moving so quickly (around 10000 m/s) that if forces the armor to flow to the sides of the stream, opening a long narrow crater in the path of the jet. So it doesnt actually "burn" a hole in the armor, but actually forces it aside.
The tips of these jets erode as they penetrate deeper, meaning the get shorter as the pass through armor, so the length of the jet determines how far it can penetrate. Now this is where the standoff fuse comes into play. This is also the trickiest part. The tip of this jet moves thousands of meters a second faster than its base, so the jet stretches as it moves forward, and will eventually break up into a series of particles. The deepest penetration occurs when the jet has time and space to stretch out as long as possible withouth breaking apart. So the standoff fuse sets the round off at a distance where maximum penetration can be achieved (most efficient jet). The standoff is measured in cone diameters (CD). The optimum Ci is around 4 to 7. CD can be determined by dividing standoff by diameter, so an 80mm HEAT shell has a standoff of 160mm means that (160/80 = 2) it has a CD of 2. Realizing this means realizing that its nearly impossible to build an optimal standoff into large warheads, so sometimes small liners can outperform large liners because of the ability to have a better standoff.
Now heres where the shape of the liner comes into play. The Thinner/longer the stream (check picture three) the greater the penetration, but the worse the behind-armor effects, where as the Broader/shorter the stream the worse the penetration but the greater the behind-armor effects.
There are other factors as well, like adding certain materials to the explosive to shape the wave for better collapsing of the liner, as well as quality of manufacture of the liner and its alloy and thickness.
Well, thats basically everything you would ever want to know about Shaped charges (Hollow charge, HEAT round, whatever). This should also clear up some misconceptions about possible uses for AT weapons (refering back to the first paragraph)."