top of page

1.2.4 Cyclic Reduction Factor

At some point, in the vicinity of 7,000 cycles, the (Syc + Syh) limitation intersects the fatigue curve for carbon and low alloy steel. The allowable stress range must therefore be reduced to fit the fatigue curve for cyclic applications with 7,000 cycles or more:

SE <= F f (SYC + Syh)


f = cyclic reduction factor, as shown in the accompanying table

cyclic reduction factor, as shown in asme b31.3 for process piping

Read More:


To get our piping engineering services, please contact our engineering consultant department for a free quote

Located in Calgary, AlbertaVancouver, BCToronto, OntarioEdmonton, AlbertaHouston TexasTorrance, CaliforniaEl Segundo, CAManhattan Beach, CA; Concord, CA; We offer our engineering consultancy services across Canada and United States. Meena Rezkallah.

bottom of page