. 5 Flanges PT Ratings. ASME Boiler Water Limits for Industrial Fire. . allowable stress value for all materials is established. 3 Table A-1 Basic Allowable Stress In Tension (ksi) per Temperature (F) Carbon Steel Plate Bar Shape And Sheet; Impact Testing requirements in Pressure Vessel Design. 75 in O. Reference ANSIASME B31. , creep) is expected to become significant. 3. 1-06-Apr-17 - 4 - 3 Getting Started 3.