Stainless Steel Pipes
Example - Allowable Pressure Calculation. Allowable pressure for a 4" sch. 40 stainless steel pipe with temperature 100 o F, allowable stress 16700 psi, quality factor E = 0.6 and wall thickness coefficient Y = 0.4 - can be calculated with ASME 31.3 Allowable Pressure Equation 1b. p = 2 (0.237 in) (16700 psi) (0.6) / ( (4.5 in) - 2 (0.237) 0.4)