This document specifies the material and thickness for a shell, noting it is made of SA-516-70 steel. The design pressure at the top of the shell is 6620 kPa (960 psi) and the external pressure is 101.33 kPa (14.7 psi). SA-516-70 refers to ASTM A516 Grade 70 and ASME SA516 Grade 70 carbon steel plate suitable for boilers and pressure vessels.

1. NOTE:
MATERIAL FOR SHELL THICKNESS
SA-516-70.
DESIGN PRESSURE AT TOP : 6620(960)
KPA (psi)
EXTERNAL PRESSURE : 101.33(14.7)
KPA (psi).
SA-516-70: ASTM A516 Grade 70 and
ASME SA516 Grade 70 Carbon Steel
Plate
for Boilers and Pressure Vessels.