.

More than an hour later...

A blush appeared faintly on Xiao Xiaoyan's fair face, her breathing was a little rapid, and there was a little sweat on her pretty nose. She was wearing her top virtually, and a pair of full hair could be seen from the side. Her breasts were enlarged and her rhythmically moved with the breathing sound. Two small bulges could be seen at the highest point of the clothes on her chest.

Her nipples were still a little hard, and the afterglow of sex had not completely subsided. Her straight thighs would still tighten inward unconsciously. So the moans came out of her rosy little mouth. After a while of storm, Xiao Xiaoyan seemed even more bright and charming, hugging Zhao Gang tightly.

"Husband, you are so strong, I love you so much."

"Hehe, that's right, why don't you feed you very much."

Five thousand words are omitted at once.

The two of them returned to the topic and Xiao Xiaoyan asked: "Husband, why do you think the German warships are more solid? I can't guess after hearing so much."

Zhao Gang was not a fool. After reading the artillery armor piercing data of various countries before, he was convinced that William III's 380mmkcn/a main side armor plate could completely withstand most of the Allied battleship shells that theoretically had 450-550mm homogeneous armor piercing deep force.

The leading position of Krupp armor dates back to the time of its invention in 1895. German alloy surface carburized hardened steel immediately overwhelmed all armor in the world. It was equivalent to 125 thickness of the latest American Harvey armor, equivalent to 208% thickness of the previous commonly used iron and steel composite armor invented by Schneider Steel. It became the highest achievement in the armor field in this era.

Zhao Gang thought of this and asked: "Do you know why the armor thickness of warships in each country is different? You always want to make standard battleships that conform to aesthetic concepts. I have never had time to explain. This time I will give you a good lesson and let you learn some knowledge."

Xiao Xiaoyan refused to support herself, and her pink fist hit her like raindrops. Zhao Gang grabbed it and kissed her fiercely. Continue to explain:

"For half a century, Krupp armor has always occupied a very high position among similar products in the same period. At present, the only performance of this era exceeds Kcn/ in greater thickness is the only British used for facade protection of George V-class battleships.

The surface carburizing hardened steel of p1905ca (post-1905ning.r) invented in 1905. The surface hardness of this armored steel is 600hb, ~. The carburizing depth is 30%, and the substrate hardness is 225hb,;.0mp

Although p1905ca.u... has better toughness and ductility, combined with low hardness surface and thickness ratio, the hardened layer has the highest elastic resistance when the thickness exceeds 350mm. This is because the high toughness and ductility of the substrate with a larger thickness have been well played out under the premise that the absolute thickness of the hardened layer reaches a considerable level. In the range of thickness of about 220-350mm, the kcn/a has the highest elastic resistance. This is due to Krupp's ability to adjust the processing technology more accurately to ensure excellent and uniform armor quality.

In the smaller thickness, the performance of the American classa steel unexpectedly jumped to the top. The surface hardness of the armored steel is 650hb, ~. The carburization depth reaches 55%, and the substrate hardness is 220hb. The tensile strength of the substrate is 670-780mpa, 450-610mpa. Although its substrate performance is average and its surface hardness is only medium to upper level, it has the armor hardening layer with the largest thickness ratio in the current era, and its destructive ability to combat ships APC shells even exceeds that of the highest hardness in Germany and the production site of Krupp technology introduced by Italy.

This makes Classa have the best bulletproof ability at a thickness below 180mm. However, under the thickness of the armor level on the side of the battleship, Classa steel plates are prone to fragmentation. The bulletproof ability is obviously not as good as that of the British p1905c~: Hardened armor conducts comprehensive performance evaluation. The conclusion is that the P1905ca ranks first in the world, KCN/weak disadvantage ranks second, and Classa is obviously inferior to the first two.

After testing the George V-class battleship p1905c|:class steel is about 25%. Special website articles introducing William III battleship are also

These are based on the thickness of the armor level on the side of the battleship

On the other hand, according to the characteristics of its own armor, ship designers from all countries have made the best choice. British battleships chose single-layer vertical armor with a large thickness of 349-374mm; German battleships chose 300-380mm medium thickness of vertical armor plus a powerful layer of www.piaotian.commkc board and a layer of 70mm full-thickness hardened plate. It is also necessary: ​​since the Chinese invented a new classa installation in 1903.

After the A, the side armor plates of their North Carolina-class, South Dakota-class and Iowa-class new battleships were constant at 307mm without going beyond the line. There are many factors involved in armor resistance. Judging from the actual practices of various countries, ensuring the quality of the armor is of great significance. On the premise of ensuring the quality of the armor, it is not the case that you want to do as thick as you want. This is why the thickness of the armor of warships in many countries does not meet the digital perception needs of military fans.

Shipbuilding metallurgy materials are mainly divided into three categories: structural steel, homogeneous armored steel, and surface hardened armored steel. Therefore, the best ship structure steel and the best ship homogeneous armored steel both come from Germany. The remaining ship surface hardened armor is equally divided by Britain and Germany in terms of the thickness of the armor level on the side of the battleship. At this point, five-sixths of the world's peak position in the field of shipbuilding metallurgy materials technology have been occupied by Germany alone, which is a strong backing for building a ship that does not sink.

When Zhao Gang said this, the obedient Xiao Xiaoyan hurriedly took the teacup and handed it to Zhao Gang.

"So, the performance levels of metallurgical materials in various countries are not what some people imagine or would rather be the same, but the difference is huge. Even American Classa steel with armor-level thickness on the side of the battleship has not low "international status." But in fact, according to our tests, their evaluation is too heavy. The evaluation from China's Lushun Naval Base shows that they ranked last among the six types of steels.

Even the worst known NVNC steel is also made of surface heat treatment hardened armor based on thorns, which is better than ordinary thorned homogeneous armor, while ordinary thorned homogeneous armor is better than ordinary cast armor. Here, think about the armor quality of the Russian cast steel turrets produced by unskilled workers under extremely simple conditions?

If so, then who is the Russian cast steel similar to mnc, classb, classsa, kcn/a?

"It's off topic. Husband, I'm convinced you. I've talked for a long time but still haven't reached the right point. Tell me quickly, why don't I leave!"

Zhao Gang had a rare opportunity to say so many things to someone, so he hurriedly grabbed her and started to say it briefly

"Don't go, even if you only take the surface hardened armor for ships as an example, in terms of armor-level thickness on the side of the battleship, the performance of British-German steel is about 25% higher than that of American steel (Note 6). Except for the best few Italian steel, most of them are below 85 of American steel, which means that the performance of British-German armor is at least 47% higher than that of most Italian armor.

At present, the thickness of the armor on the side of the new battleships in various countries is only 37% different from the thickness of the armor on the side of the battleships, and the impact of the two on the ability to resist missiles is almost the same. Even according to this conservative estimate, the importance of evaluating the resistance of the battleship armor is by no means lower than the thickness of the comparison material. Many people have ignored this because of the lack of relevant information. They rank the protection level according to the thickness difference of the armor on the side of the battleships of dozens of millimeters or even a few millimeters, which is ridiculous today."

Zhao Gang's words were interrupted by a knock on the door, and Zhao Gang asked loudly:

"What's going on? If it's the Atlantic War, just read it outside the door."

"Yes, the Atlantic Ocean started a war, and the radio waves were extremely dense, and suddenly broke out. It was determined that Britain had more than 18 battleships, and it was still increasing. The British and the Luftwaffe also participated in the melee. The number of aircraft was several hundred. It was initially judged that Germany was four hundred and Britain was three hundred, and it was constantly increasing."

"Immediately increase the monitoring efforts and report every five minutes! Take out the map of the Atlantic Ocean related sea areas and simulate the battlefield situation. It seems that the British are prepared, and the Germans are going to be bad this time."
Chapter completed!