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INS Arihant sails out of harbour

The PWR consists of a huge pressure hull, a tank containing water and a reactor. It also consists of a pressure vessel built from unique steel, a control room as well as an auxiliary control room.

That unique steel is HY-80

SSBN Arihant Class Submarine - Naval Technology

Once again:
Proof is in the pudding..
Eat it.

My stupid Friend ? PWR= Pressured Water Reactor , The author is talking about Reactor & its hull (casing) and not about Submarine hull .

Several companies supplied components of the reactor. High grade steel supplied by Heavy Engineering Corporation, Ranchi was used to build the reactor vessel..

i asked you , better read things properly...
 
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The PWR consists of a huge pressure hull, a tank containing water and a reactor. It also consists of a pressure vessel built from unique steel, a control room as well as an auxiliary control room.

That unique steel is HY-80

SSBN Arihant Class Submarine - Naval Technology

Once again:
Proof is in the pudding..
Eat it.

:lol: Burn in jealousy as much as you want.

I believe available Indian source and not needed some ****@d up foreigner one those who dnt even know even a bit about this secrete project of Indian history.
 
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You people think its easy to bend Titanium the way you want it?


Read the difficulty faced by Americans:


Unexpected difficulties arose from the metal fabrication stage. Titanium was equal to stainless steel in strength, but its virtues as an aircraft metal; light weight, strength, corrosion resistance and high temperatures tolerance were accompanied by new manufacturing 200,000 psi with an aging process of 70 hours to bring it to full strength. With careful aging and quality control, the time could be reduced to 40 hours but a serious glitch appeared with either process. The titanium being manufactured in the United States in those days that lacked the required purity. In technical terms, U.S. titanium was hydrogen embrittled. In simple terms, if a piece dropped, it would shatter. The purity problem became a major stumbling block in A-12 production. Initially, all of the manufacturing material secured from Titanium Metal Corporation had to be rejected on pure quality basis. The entire first batch of raw material ended up being tossed out, along with the exiting "pickling process". A source of purer titanium had to be found and it would be outside the United States. The outside source was located in the Soviet Union. Not only was Soviet titanium of the higher quality, but also the USSR had the only 25,000 lbs forging press needed to form the basic material. In a remarkable stroke of irony, the CIA was able to price titanium from the Soviet Union under covert conditions. The Soviet Union remained unaware that it was aiding in the development of an aircraft that someday might over fly them.

There were other problems with titanium. It reacted to just about everything that touched it. Cadmium, mercury, mercury amalgam, cadmium-plated tools, halogens (chlorine, fluorine, bromine, iodine. even ink form some pens and lead from pencils. Ink from felt tip pens could actually eat a hole in a sheet of titanium in just under 12 hours. Skunk Works fabrications, after much detective work found that the spot welds done in the summer were more prone to deteriorate than those done during the winter. They discovered that the deterioration was related to problem with algae in Burbank's water supply. To prevent it, municipal water wads heavily chlorinated during the summer. This water was used to wash the titanium plates; it would eat away the welds. The airframes could be assembled by conventional construction techniques, but it would take hand-jigging or one by one assembly to keep the airframe Construction process moving. Despite the costs and fabrication problems there was a distinct advantage in using the titanium in the A-12: the hotter it gets, the more it "recurs" itself. That means that as heat builds up when the aircraft flies at Mach speed, the metal makes itself stronger, much the way it does in the annealing process.
 
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Report from NDTV

Analysis: Now to build two more Nuclear-submarines quickly


The conning tower is not crunched, because of diving below crushing depth, its for designing purpose to reduce acoustic signature.

See this pic.
View attachment 175969

Acoustic Tiles is not fitted on. When it will be fitted , whole Hull and Maste will fitted with those .... right now u see bare Hull and maste in Indian Sub.

India yet to fit Acoustic tiles on sub. which will be done after missiles test firing , Right now lot of Bayonne waiting to register its noise.
After firing of missile , tiles will be fitted and its noise will reduce and its signature will be changed.

You people think its easy to bend Titanium the way you want it?


Read the difficulty faced by Americans:


Unexpected difficulties arose from the metal fabrication stage. Titanium was equal to stainless steel in strength, but its virtues as an aircraft metal; light weight, strength, corrosion resistance and high temperatures tolerance were accompanied by new manufacturing 200,000 psi with an aging process of 70 hours to bring it to full strength. With careful aging and quality control, the time could be reduced to 40 hours but a serious glitch appeared with either process. The titanium being manufactured in the United States in those days that lacked the required purity. In technical terms, U.S. titanium was hydrogen embrittled. In simple terms, if a piece dropped, it would shatter. The purity problem became a major stumbling block in A-12 production. Initially, all of the manufacturing material secured from Titanium Metal Corporation had to be rejected on pure quality basis. The entire first batch of raw material ended up being tossed out, along with the exiting "pickling process". A source of purer titanium had to be found and it would be outside the United States. The outside source was located in the Soviet Union. Not only was Soviet titanium of the higher quality, but also the USSR had the only 25,000 lbs forging press needed to form the basic material. In a remarkable stroke of irony, the CIA was able to price titanium from the Soviet Union under covert conditions. The Soviet Union remained unaware that it was aiding in the development of an aircraft that someday might over fly them.

There were other problems with titanium. It reacted to just about everything that touched it. Cadmium, mercury, mercury amalgam, cadmium-plated tools, halogens (chlorine, fluorine, bromine, iodine. even ink form some pens and lead from pencils. Ink from felt tip pens could actually eat a hole in a sheet of titanium in just under 12 hours. Skunk Works fabrications, after much detective work found that the spot welds done in the summer were more prone to deteriorate than those done during the winter. They discovered that the deterioration was related to problem with algae in Burbank's water supply. To prevent it, municipal water wads heavily chlorinated during the summer. This water was used to wash the titanium plates; it would eat away the welds. The airframes could be assembled by conventional construction techniques, but it would take hand-jigging or one by one assembly to keep the airframe Construction process moving. Despite the costs and fabrication problems there was a distinct advantage in using the titanium in the A-12: the hotter it gets, the more it "recurs" itself. That means that as heat builds up when the aircraft flies at Mach speed, the metal makes itself stronger, much the way it does in the annealing process.


Read Russian Nuclear Sub which is made of Titanium HUL in 1970's .. india find water on moon which US can't find from last 50 years..

Again India made Airframe of Titaniums ......

IF US can't do it means Russian can't do, Indians can't do.
 
Last edited:
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You people think its easy to bend Titanium the way you want it?


Read the difficulty faced by Americans:


Unexpected difficulties arose from the metal fabrication stage. Titanium was equal to stainless steel in strength, but its virtues as an aircraft metal; light weight, strength, corrosion resistance and high temperatures tolerance were accompanied by new manufacturing 200,000 psi with an aging process of 70 hours to bring it to full strength. With careful aging and quality control, the time could be reduced to 40 hours but a serious glitch appeared with either process. The titanium being manufactured in the United States in those days that lacked the required purity. In technical terms, U.S. titanium was hydrogen embrittled. In simple terms, if a piece dropped, it would shatter. The purity problem became a major stumbling block in A-12 production. Initially, all of the manufacturing material secured from Titanium Metal Corporation had to be rejected on pure quality basis. The entire first batch of raw material ended up being tossed out, along with the exiting "pickling process". A source of purer titanium had to be found and it would be outside the United States. The outside source was located in the Soviet Union. Not only was Soviet titanium of the higher quality, but also the USSR had the only 25,000 lbs forging press needed to form the basic material. In a remarkable stroke of irony, the CIA was able to price titanium from the Soviet Union under covert conditions. The Soviet Union remained unaware that it was aiding in the development of an aircraft that someday might over fly them.

There were other problems with titanium. It reacted to just about everything that touched it. Cadmium, mercury, mercury amalgam, cadmium-plated tools, halogens (chlorine, fluorine, bromine, iodine. even ink form some pens and lead from pencils. Ink from felt tip pens could actually eat a hole in a sheet of titanium in just under 12 hours. Skunk Works fabrications, after much detective work found that the spot welds done in the summer were more prone to deteriorate than those done during the winter. They discovered that the deterioration was related to problem with algae in Burbank's water supply. To prevent it, municipal water wads heavily chlorinated during the summer. This water was used to wash the titanium plates; it would eat away the welds. The airframes could be assembled by conventional construction techniques, but it would take hand-jigging or one by one assembly to keep the airframe Construction process moving. Despite the costs and fabrication problems there was a distinct advantage in using the titanium in the A-12: the hotter it gets, the more it "recurs" itself. That means that as heat builds up when the aircraft flies at Mach speed, the metal makes itself stronger, much the way it does in the annealing process.


So what that article suggest?? That India can not make it?? This is what you want to say?
 
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Man you stop right here, before you would be declared a laughing stock.

The hull is HY-80 steel = 80 atmosphere of endurance.

India does not have capability to forge Titanium hull.
Besides its damn expensive to begin with.

Please stop your crap right here.
:crazy:
 
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Here is for those morons, direct from L&T:

Larson & Toubro (L&T) built the hull for the submarine at its facility in Hazira, where in 1998, Dr APJ Abdul Kalam, then DRDO chief, quietly cut the steel for the hull. The ATV (advanced technology vessel) project remains L&T’s biggest order from the defence forces for the engineering giant, which has been active in the defence sector
for years.

Private sector played a major role in Arihant | Latest News & Updates at Daily News & Analysis
 
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Titanium?
My foot!
India does not have this technology.
 
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Here is for those morons, direct from L&T:

Larson & Toubro (L&T) built the hull for the submarine at its facility in Hazira, where in 1998, Dr APJ Abdul Kalam, then DRDO chief, quietly cut the steel for the hull. The ATV (advanced technology vessel) project remains L&T’s biggest order from the defence forces for the engineering giant, which has been active in the defence sector
for years.

Private sector played a major role in Arihant | Latest News & Updates at Daily News & Analysis

Give me a single nuke sub bro, which can dive more than 300m and her hull is not made of titanium.
 
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You people think its easy to bend Titanium the way you want it?

Read the difficulty faced by Americans:

So, because the Americans faced a lot of issues in developing the technology India couldn't have possibly developed it. What kind of logic is this? India is on her way to becoming a technologically advanced nation. About time Pakistanis got used to this fact like the rest of the world.
 
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Give me a single nuke sub bro, which can dive more than 300m and her hull is not made of titanium.

Oh my!
More morons..

They use HY-100 steel.
That is 100 atmosphere.

The rule of thumb is 10 meter for each atmosphere.
 
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Here is for those morons, direct from L&T:

Larson & Toubro (L&T) built the hull for the submarine at its facility in Hazira, where in 1998, Dr APJ Abdul Kalam, then DRDO chief, quietly cut the steel for the hull. The ATV (advanced technology vessel) project remains L&T’s biggest order from the defence forces for the engineering giant, which has been active in the defence sector
for years.

Private sector played a major role in Arihant | Latest News & Updates at Daily News & Analysis

Really idiocy has no limit and above post just simply proved that :lol: :lol:

" quietly cut the steel for the hull " Reported in 2009 for something that happened in 1998.

Where it said about material used for hull???

Some moron really cant digest the fact


Titanium?
My foot!
India does not have this technology.

Burn is jealousy as much you want :lol: :lol:
 
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After #83 you have no recourse.
Go and sleep.
Ignorance, bro, ignorance. BTW, ever you heard about SR-71. Did they created the whole plane of titanium, or they use that on max. pressure point?
 
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