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With the stronger HY-80 steel, this depth increased to 1,800 feet (550 m) and with HY-100 a depth of 2,250 feet (690 m). [2] The first production submarines to use HY-80 steel were the Permit class. These reportedly had a normal operating depth of 1,300 feet, roughly two-thirds the crush depth limit imposed by the steel. [2]
Somewhat more ductile than the average for any similar armor, even Krupp's post-World War I "Wotan weich" armor, STS could be used as structural steel, whereas traditional armor plate was entirely deadweight. STS was expensive, but the United States could afford to use it, lavishly, and did so on virtually every class of warship constructed ...
Tullibee was an alternate design optimized for anti-submarine warfare, much smaller and slower than the Threshers and with a quiet turbo-electric propulsion system. [4] Although they used the same HY-80 steel (yield strength 80,000 psi (550 MPa)) as the Skipjacks, the Threshers ' pressure hulls were made using an improved design that extended ...
High-strength alloyed steel is still the main material for submarines today, with 250 to 350 metres (820 to 1,150 ft) depth limit, which cannot be exceeded on a military submarine without sacrificing other characteristics. To exceed that limit, a few submarines were built with titanium hulls. Titanium has a better strength to weight ratio and ...
Pages in category "Steel alloys" The following 12 pages are in this category, out of 12 total. ... HY-80; HY-100; M. Mangalloy; S. Siladium; Special treatment steel; T.
The NFC North dominates the rest of the conference’s playoff positions with the 11-2 Minnesota Vikings and 9-4 Green Bay Packers filing the No. 5 and No. 6 spots respectively.
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