DonovanC;
If you want to access the ASTM specifications, you can do this on-line for a nominal fee through ASTM below

http://www.astm.org/index.shtml

 

ASTM A106 is a specification for seamless carbon steel (max C=0.30%) pipe for high temperature service. Grade B has min values of 60ksi TS and 35ksi YS.

Min or max values for each typical constituent are listed.
There are numerous additional requirements shown in the spec text (% elongation and other test values).

A print or pdf version of the spec is available from ASTM as metengr mentioned at a cost of $37.

The ASTM title clarifies some materials.  For example ASTM A 105 Standard Specification for Carbon Steel Forgings for Piping Applications, common for steel flanges; or ASTM A 106 Standard Specification for Seamless Carbon Steel Pipe for High-Temperature Service, common for steel pipe.  Just going the the ASTM web site or a google search to get the title may help with many materials.  Also, many companies provide desktop access to codes and standards via IHS.

To what piping Code is the system being designed?  What is the operating temperature and pressure for this system?  What is the range of pipe nominal diameters?

http://www.uss.com/corp/tubular/tubular-line-pipe.asp
 

Lots of times you can contact a distributor and talk with a sales engineer.  Try and get them to send you one of their product books.  They have lots of mechanical properties listed.....

or look for some Products for ASTM, like free Databases that give the Answer.