Search found 3150 matches
- Mon Mar 28, 2005 8:50 pm
- Forum: Naval Technology
- Topic: Question for Dave Saxton -- STA61
- Replies: 4
- Views: 2801
The second link posted by Ulrich is really interesting. The chemical composition range specified by the standard is very close to what Tirpitz's Wh tested at. In fact the type 1 material is essentially the same, minus the .17% copper. The chemical composition of the experimental Krupp material teste...
- Mon Mar 28, 2005 4:00 pm
- Forum: Naval Technology
- Topic: Question for Dave Saxton -- STA61
- Replies: 4
- Views: 2801
I'm sorry, I'm not familar with it, at least not off the top of my head under that designation. Armour materials can have several designations. Today, differing grades of RHA may simply be given a MIL-Spec number. It can be hard to keep track off. I'm familar with Stahl 61. This is a low alloy const...
- Sat Mar 26, 2005 3:27 pm
- Forum: Naval Weapons
- Topic: How the guns work?
- Replies: 15
- Views: 13760
Probably so. Some secondary battle accounts indicate this. The ships comand may have limited the use of rapid firing of full salvos to periods only where it could be most effective, to conserve armour piercing amunition. Bismarck was embarked on a raiding cruise, and may have been stocked with great...
- Sat Mar 26, 2005 7:19 am
- Forum: Naval Weapons
- Topic: How the guns work?
- Replies: 15
- Views: 13760
Hi Steve, I usually try to avoid re-fighting the Denmark St. battle as it's virtually impossible to draw firm conclusions and it's very argument indusive. Bismarck fired only 93- 38cm shells during this combat. If we use the most accepted time line, Bismarck fired it's first salvo at about 0555, and...
- Tue Mar 22, 2005 8:20 pm
- Forum: Naval Weapons
- Topic: How the guns work?
- Replies: 15
- Views: 13760
As far as I know, Schmalenbach's writings are not currently in print. The best place to find this stuff is the research library of a large university. Most of his writings are in German only. I have seen some materials were the captions, and some text feature English translations. The twin gun turre...
- Fri Mar 18, 2005 1:48 am
- Forum: Naval Weapons
- Topic: 1921 firing trials against Baden
- Replies: 145
- Views: 193964
- Fri Mar 18, 2005 1:29 am
- Forum: Naval Weapons
- Topic: How the guns work?
- Replies: 15
- Views: 13760
- Fri Mar 18, 2005 12:30 am
- Forum: Naval Technology
- Topic: Metallurgical Study Of Enemy Ordnance
- Replies: 46
- Views: 47440
The composition %'s closely match what the US analysists found of the Japanese VNC materials in 44, except the C% was actually a bit lower. Of course the C levels of a face hardened plate can be higher, because cemented armour is considered unweldable, and with a likely pearlite micro-stucture of th...
- Fri Mar 18, 2005 12:13 am
- Forum: Naval Weapons
- Topic: 1921 firing trials against Baden
- Replies: 145
- Views: 193964
................... Perhaps they even increased some figures on purpose to have some margin of security. If in real battle it turned out that their assumptions were overestimated, well, so much the better for them. ............. This type of thing is done all the time by various military and Itel o...
- Thu Mar 17, 2005 9:11 pm
- Forum: Naval Weapons
- Topic: 1921 firing trials against Baden
- Replies: 145
- Views: 193964
- Thu Mar 17, 2005 4:43 pm
- Forum: Naval Weapons
- Topic: 1921 firing trials against Baden
- Replies: 145
- Views: 193964
- Thu Mar 10, 2005 6:43 pm
- Forum: Bismarck General Discussion
- Topic: Armour plating & ship's construction
- Replies: 1
- Views: 5085
Ray, Steel weighs about 490-496 lb's per cubic foot. This is regardless of the type. Rolled plates will weigh a bit more. You can calculate the approximate weight if you know the correct demensions and the reduction in volume by rolling. One must be carefull when reading an amour weights breakdown, ...
- Mon Mar 07, 2005 6:24 am
- Forum: Naval Technology
- Topic: Metallurgical Study Of Enemy Ordnance
- Replies: 46
- Views: 47440
These Carbon levels are very high, compared to typical naval homogenious armours. This illustrates how tank RHA reqiures slightly different properties than naval armours to deal with different threats. Carbon is of course the most important alloy used in steel for both hardness and strength. Carbon ...
- Sat Mar 05, 2005 8:46 pm
- Forum: Naval Technology
- Topic: Metallurgical Study Of Enemy Ordnance
- Replies: 46
- Views: 47440
The Wotan materials worked into Tirpitz had the amounts of Cr and Ni basically inverted compared to usual practice, with much greater Mo concentrations than expected. Here we find a Cr/Mo alloy design with reduced Ni and C content, in a pre-war application. Tirpitz was launched on April, 1, 1939. Th...
- Sat Mar 05, 2005 4:32 pm
- Forum: Naval Technology
- Topic: Metallurgical Study Of Enemy Ordnance
- Replies: 46
- Views: 47440