Bursting Pressure

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Barlow's formula can be used to estimate burst pressure of pipes or tubes.

P = 2 s t / (d_o SF)         (1)

where

P = max. working pressure (psig)

s = material strength (psi)

t = wall thickness (in)

d_o = outside diameter (in)

SF = safety factor (in general 1.5 to 10)

The Barlow's estimate is based on ideal conditions at room temperature.

Material Strength

The strength of a material is determined by the tension test, which measure the tension force and the deformation of the test specimen.

• the stress which gives a permanent deformation of 0.2% is called the yield strength
• the stress which gives rupture is called the ultimate strength

Strength of some common materials:

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Related Topics

• Pressure Ratings - Pressure ratings of pipes and tubes and their fittings - carbon steel , stainless steel, plastic, copper and more

Related Documents

• Bursting and Collapsing Pressures of ASTM A312 Stainless Steel Pipes - The theoretic bursting and collapsing values of stainless steel pipes - ASTM A312
• Wrought Steel Pipes - Bursting Pressure - Theoretical bursting and working pressure wrought steel standard, extra strong and double extra strong pipe