Allowable Working Pressures - 3326 psig for 0.035-in Thick Tube Wall; 4791 psig for 0.049-in Thick Tube Wall; 6566 psig for 0.065-in Thick Tube Wall. Allowable Working Pressures for 304SS or 316SS Seamless Tubing to ASTM A269-04 or Equivalent Based on the Following Data: Temperature: -20 to 100 deg F; Ultimate Tensile Strength: 75000 psi; Allowable Stress: 20000 psi as Specified by ASTM B31.3-2002