Does Burst Pressure = 4 X Working Pressure?
Does Burst Pressure = 4 X Working Pressure?
(OP)
I have a stainless steel compression fitting that has a working pressure of 6000 psig. The manufacturer' rep does not know what the relationship is between working pressure and burst pressure. I do not have time for him to research it. Does anyone know what the burst pressure would be? I heard from someone that it is either 3.75 or 4.00 times the working pressure. I would like to know what the real value is and where the information can be found. I have to document it for our customer. Thanks for your help.





RE: Does Burst Pressure = 4 X Working Pressure?
I can't find much on the way of compression fittings although the relationship between burst and working pressure depends on the safety factor for the product, the link below shows burst to working pressure as 6:1 for tube.
Fitting appear to be rated for the maximum allowable working pressure of the tube but I cannot find the safety factor.
https://www.hydraulic-supply.com/pdf/HSCCatalog/Tu...
“Do not worry about your problems with mathematics, I assure you mine are far greater.” Albert Einstein
RE: Does Burst Pressure = 4 X Working Pressure?
RE: Does Burst Pressure = 4 X Working Pressure?
RE: Does Burst Pressure = 4 X Working Pressure?
RE: Does Burst Pressure = 4 X Working Pressure?
You're welcome
“Do not worry about your problems with mathematics, I assure you mine are far greater.” Albert Einstein
RE: Does Burst Pressure = 4 X Working Pressure?
Tubing is rated like pipe: safe allowable stress is set to 1/3.5 of the ultimate tensile stress or 2/3 of the yield, whichever is lower for the material.
RE: Does Burst Pressure = 4 X Working Pressure?
As with any mechanical thing made of slightly different crystals at slightly different times under slightly different conditions, each will be machined slightly different and will ultimately fail at different pressures.
At best, you'd get a range of pressures with a fairly large standard deviation between the individual failre points. So, expect only a theoretical value.
RE: Does Burst Pressure = 4 X Working Pressure?