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HY-80 is prone to the formation of martensite and martensite's peak hardness is dependent on its carbon content. HY-80 is an FCC material that allows carbon to more readily diffuse than in FCC materials such as austenitic stainless steel. Nickel – Adds to toughness and ductility to the HY-80 and is also an austenite stabilizer.
The development of such homogeneous steel resulted from testing which showed that face-hardened armor was less effective against high-obliquity glancing impacts. Around 1910, Carnegie Steel developed a new nickel-chrome-vanadium alloy-steel that offers improved protection over the prior nickel steel armor, though vanadium was no longer used ...
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 test depth to 1,300 ft (400 m).
Seawolf-class hulls are constructed from HY-100 steel, which is stronger than the HY-80 steel employed in previous classes, in order to withstand water pressure at greater depths. [11] [12] [self-published source]
High-strength low-alloy steel (HSLA) is a type of alloy steel that provides better mechanical properties or greater resistance to corrosion than carbon steel.HSLA steels vary from other steels in that they are not made to meet a specific chemical composition but rather specific mechanical properties.
Also like Albacore, the Skipjacks used HY-80 high-strength steel, with a yield strength of 80,000 psi (550 MPa), although this was not initially used to increase the diving depth relative to other US submarines. HY-80 remained the standard submarine steel through the Los Angeles class. [5] Control room of Skipjack class; the bow is at the top.
Alloy steel is steel that is alloyed with a variety of elements in amounts ... Cr 0.50% or 0.80% or 0.95%, Mo 0.12% or 0.20% or 0.25% or 0.30% ... Wikipedia® is a ...
HY-80, a type of alloy steel; HY-124798, a chemical compound; HY Velorum, a binary star system; Hy-V, a flight experiment research project; HY1935 bayonet, a Chinese infantry weapon; All pages with titles beginning with HY; All pages with titles beginning with Hy; All pages with titles containing hy; HYS (disambiguation) HI (disambiguation ...