HY-80
HY-80 is a high-tensile alloy steel. It is most notable for its use in the construction of pressure hulls for US nuclear submarines in the 1950s to 1980s.
The 'HY' steels are a series of steels with high yield strength, hence the name. Their numbers, HY-80, HY-100, HY-130 refer to their yield strength in ksi, i.e. HY-80 has a yield strength of 80,000 psi (550 MPa), and HY-100 of 100,000 psi (690 MPa).
Submarines
The need to develop improved steels was driven by a desire for deeper-diving submarines. To avoid detection by sonar, submarines ideally operate at least 100 metres below the Sonic Layer Depth. World War II submarines operated at a total depth rarely more than 100 metres. With the development of nuclear submarines, their new independence from the surface for an air supply to their diesel engines meant that they could focus more on hidden operation at depth, rather than operating largely as surface-cruising submersibles. The increased power of a nuclear reactor allowed their hulls to become larger and faster than previously. Developments in sonar also made them able to hunt effectively at depth, rather than relying on visual observations from periscope depth. All of these factors drove a need for improved steels to build stronger pressure hulls.
Podcasts:
-
by Beck
-
by South Park Mexican
-
by Snoop Doggy Dog
-
by Cya
-
by Stiff Little Fingers
-
by Michael Franti & Spearhead
-
by Blue Scholars
-
by Zap Mama
-
by Spm
-
by Kim Tae Woo
-
by Girls' Generation
High 5
by: BeckHigh 5, High 5! High 5, High 5! [rappers]: \" C'mon on! 8! Everybody!
C'mon! 7! C'mon, now! 6! 5!
Aw, yeah, I like that shit.\" When I rock it's like a high 5 Want a slap
in the face I love the taste All my
days with my wheelchair ways Watch me die in my suicide high I don't
mean it 'cause I only come on
to you When I step to the room with a powerful motion Leopard skin let
the records spin 'Round and
round with the speed of sound High 5! More dead than alive! Rocking the
plastic like a man from the
Catskills! High 5! More dead than alive! Rocking the plastic like a
man from the Catskills! Rocky
mountain low we gotta go Put that gadget in the random mode Cripple
candy rocking the candy
Rhumba, brickshot, doing the foxtrot In my car sweating like a dog Beers
and chairs no fronteirs On my
way from the 'Frisco Bay Dixieland, soda-pop man High 5! More dead than
alive! Rocking the plastic
like a man from the Catskills! High 5! More dead than alive! Rocking
the plastic like a man from the
Catskills! [spoken]:Yeah, put that machine in random mode Talking about
popping jugger Like the last
century [Mike D]: \"Turn that shit off, man! What's wrong with you? Man,
get the other record! Damn!\"
High 5! More dead than alive! Rocking the plastic like a man from the
Catskills! High 5! More dead
than alive! Rocking the plastic like a man from the Catskills! High 5!
More dead than alive! Rocking the
plastic like a man from the Catskills! High 5! More dead than alive!
Rocking the plastic like a man from
the Catskills! [Mike D]: \"Ok, now. Do like designer jeans. Everybody,
designer jeans! say, say, say,
say, say: Ooh, la la, sasoon! C'mon, c'mon, c'mon! Everybody! One more
time, let me hear you say:
Ooh, la la, sasoon! Just do it everybody, c'mon! Now I want the
ladies. All the ladies, say: Sergio
Valente! Sing it, girl.
Let me hear you say: Sergio Valente!