PaperPapel
Mechanical
- May 21, 2023
- 1
I'm sure this is something stupid because this is literally my first time trying to broach BPVC.
But everywhere I look online the endurance limit for 316 steel is roughly 30ksi, maybe as low as 20ksi. In BPVC the curve endurance limit is 15ksi. That's a pretty big difference and it is the only source I can find with such low number.
I'm probably missing some correction factor or something. I see the BPVC is accounting for temp all the way up to 800F, which is no where near my application. I only need ambient in the nominal and absolute worst case maybe 200F.
I also see there is a temp correction equation, 28.3*E3*(Sa/Et), however I can't figure out what "E3" means and unless it way less than 1 this equation is actually going to increase the stress value I take to the charts.
But everywhere I look online the endurance limit for 316 steel is roughly 30ksi, maybe as low as 20ksi. In BPVC the curve endurance limit is 15ksi. That's a pretty big difference and it is the only source I can find with such low number.
I'm probably missing some correction factor or something. I see the BPVC is accounting for temp all the way up to 800F, which is no where near my application. I only need ambient in the nominal and absolute worst case maybe 200F.
I also see there is a temp correction equation, 28.3*E3*(Sa/Et), however I can't figure out what "E3" means and unless it way less than 1 this equation is actually going to increase the stress value I take to the charts.
