Pressure Rating Tables for Stainless Steel TP304 Pipe

Notes to the Tables of Allowable Working Pressures
1. This data is intended to provide a general guide. It must not to be relied upon in the absence of competent professional advice.
2. These allowable pressures were calculated by the formula given in AS 4041-2006 "Pressure Piping", clause 3.14.3​. Other design codes may give different allowable pressures. The original specifications must be consulted for full details.

3. These calculations assume Piping Class 1 so only apply if this level of piping construction quality has been achieved.
4. Calculations are for seamless pipe to specification ASTM A312/A312M. An additional weld joint efficiency factor of 85% must be allowed for standard welded pipe, and allowance made for corrosion or wear loss if appropriate.

5. Grade 304 and 316 design pressures are only valid at temperatures above 538°C if carbon content is 0.04% or higher.
6. Allowable working pressures are given in megapascals (MPa). Conversions to other units are: