Dr Gupta
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You would want a submarine hull to be made out of a very strong alloy, but, non-magnetic & highly corrosion resistant. A predominantly non-ferrous alloy would be preferable.@Penguin Could you enlighten us on the special grade steel used for a nuclear submarine's hull?
You think Pakistan could manufacture it? or would they simply import it from China which is far easier to do so.
@Penguin Could you enlighten us on the special grade steel used for a nuclear submarine's hull?
You think Pakistan could manufacture it? or would they simply import it from China which is far easier to do so.
The most important rule in Pakistani procurement is what you have spelled out. If Pakistan can get something cheaper from abroad without hassle and with a guarantee that it can keep it running without sanctions.. it will get it.It would be cheaper for them to import from China. They could possibly make it themselves but it would add a lot to the overall cost since its a one time job whereas China has economies of scale in steel production to begin with.
China will soon have Type 96 SSBN and since they will be having this beast than why can't they provide us Type 94 SSBN ? I think Pakistan is not willing to induct it because once SSBNs are spotted they are very vulnerable and those ballistic missiles equipped with nuclear warhead inside SSBNs would backfire and Chinese nuclear submarines are very noisy(expect the latest ones).Its beyond the mean of the country
No way China is giving away its precious new SSBN or SSN designs
You would want a submarine hull to be made out of a very strong alloy, but, non-magnetic & highly corrosion resistant. A predominantly non-ferrous alloy would be preferable.
Steel for the production of submarine hulls, which is characterized in that the chemical composition thereof comprises, by weight percent:
- 0.03%≦C<0.08%;
- 0.04%≦Si≦0.48%;
- 0.1%≦Mn≦1.4%;
- 2%≦Ni≦4%;
- Cr≦0.3%;
- 0.3%≦Mo+W/2+3(V+Nb/2+Ta/4)≦0.89%;
- Mo≧0.15%;
- V+Nb/2+Ta/4≦0.004%;
- Nb≦0.004%;
- Cu≦0.45%;
- Al≦0.1%;
- Ti≦0.04%;
- N≦0.03%;
The inventive steel has an essentially martensitic or lower bainitic structure comprising at least 90% martensite or lower bainite, at most 5% residual austenite, at most 5% ferrite.
- the remainder comprising iron and impurities resulting from production, boron being an impurity with a concentration of less than 0.0005% and P+S≦0.015%, the chemical composition satisfying condition 410≦540�C0.25+245[Mo+W/2+3(V+Nb/2+Ta/4)]0.30.ltore- q.460.
The steel has a yield strength of between 480 MPa and 620 Mpa and a Charpy toughness V, KCV at -60� C. of more than 50 J.
Now, I have no idea what this al means exactly ;-)
You might find these intersting read.
http://gentleseas.blogspot.nl/2015/01/japan-offer-to-australia-soryu.html
http://gentleseas.blogspot.nl/2015/04/submarine-steel-strength-implications.html
http://www.dtic.mil/dtic/tr/fulltext/u2/616980.pdf
Type 096 is still under development, with first unit under way. Four type 094 are in service, four more are expected by 2020. So, that really is their current SSBN. It is not a matter that China can't provide, rather that it won't provide.China will soon have Type 96 SSBN and since they will be having this beast than why can't they provide us Type 94 SSBN ? I think Pakistan is not willing to induct it because once SSBNs are spotted they are very vulnerable and those ballistic missiles equipped with nuclear warhead inside SSBNs would backfire and Chinese nuclear submarines are very noisy(expect the latest ones).
The problem with any SSBN or SSN is that you still need a base for them to operate from, that is safe. I'm not sure, given Pakistan's relatively short coastline and the range of e.g. India's Su-30MKIs that its a viable option. Apart from being VERY costly and manpower consuming.
FiveWhat is the minimum number of SSBN's required to ensure that at least one is always out on patrol?
Steel for the production of submarine hulls, which is characterized in that the chemical composition thereof comprises, by weight percent:
- 0.03%≦C<0.08%;
- 0.04%≦Si≦0.48%;
- 0.1%≦Mn≦1.4%;
- 2%≦Ni≦4%;
- Cr≦0.3%;
- 0.3%≦Mo+W/2+3(V+Nb/2+Ta/4)≦0.89%;
- Mo≧0.15%;
- V+Nb/2+Ta/4≦0.004%;
- Nb≦0.004%;
- Cu≦0.45%;
- Al≦0.1%;
- Ti≦0.04%;
- N≦0.03%;
- the remainder comprising iron and impurities resulting from production, boron being an impurity with a concentration of less than 0.0005% and P+S≦0.015%, the chemical composition satisfying condition 410≦540�C0.25+245[Mo+W/2+3(V+Nb/2+Ta/4)]0.30.ltore- q.460.
The inventive steel has an essentially martensitic or lower bainitic structure comprising at least 90% martensite or lower bainite, at most 5% residual austenite, at most 5% ferrite.
The steel has a yield strength of between 480 MPa and 620 Mpa and a Charpy toughness V, KCV at -60� C. of more than 50 J.
All of these 8 submarines from China are S-20(with AIP).If you look at recent development that will clearly pointing what I said , 8 Subs from China , as 4 SSKs and 4 SSBs , looking for western subs more likely Italian , minimum 6 again SSKs . And the plan of Building Nuclear Submarines ( Remember we have to build one ,).
Thank you All
Yes and most probably they will come with Chinese cruise missiles or perhaps Pakistan will go with Babur. Either way, the moment they arrive, Pakistan's TRIAD will be opertionalised.All of these 8 submarines from China are S-20(with AIP).
Wont it have something to do with the area it have to cover/patrol?Five