[PSUBS-MAILIST] Best Steel to use for Sub Hull

[JimToddPsub at aol.com]

Maybe more detail than you really want to know, but here  goes:
 
ASTM A 516 or ASME SA 516 grade is one of the most popular steel  grades in 
market . 

It is primarily intended for use in welded pressure  vessels where notch 
toughness is important. It comes in four grades 55, 60, 65  & 70. At Oakley 
Steel we mainly sell 516 gr 60 and 516 gr 70. These grades  cover a range of 
tensile strengths from 55 - 90 MPa and this versatility  explains much of the 
specifications popularity. 

For plates thinner than  40mm we normally supply them as rolled. Plates 
supplied above 40mm thick are  normalised. 

For A 516 grade 70, which is one of our most popular steels,  the ASME 
standard composition is as follows (dependent on grade): 

Carbon  0.27 - 0.31% 
Manganese 0.79 - 1.3% 
Phosphorous 0.035% max 
Sulphur  0.035% max 
Silicon 0.13 - 0.45% 
 
 
In a message dated 10/22/2013 11:53:12 A.M. Central Daylight Time,  
jonw at psubs.org writes:


Generally, A516gr70 suffices for personal or  recreational submarines.

Jon


On 10/22/2013 12:45 PM,  Christopher Cave wrote:



Hello, 
 
What is the best steel to use for a submarine hull. Someone mentioned 
marine steel such as 316,316L or  317. Any suggestions or a website I can review.
 
Thanks,
Chris 
 
Christopher Cave  

_christophercave at yahoo.com_ (mailto:christophercave at yahoo.com) 


 






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