Pipeng Toolbox : Flange Bolt Tensile Load Calculators Blank User
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Flange Bolt Tensile Load

Calculate flange bolt load, bolt stress and flange pressure.

The bolt load, bolt stress and flange pressure can be calculated from either the bolt design stress, a user defined bolt stress, a user defined bolt load, or a user defined flange pressure. The flange pressure is calculated with no gasket preload, or external loads such as bending moment. The bolt load equals the bolt stress times the tensile area. Tensile area is calculated for either ANSI or ISO threads. Bolt size can be calculated for either UNC, UNF, BSW or ISO bolts. The design stress can be calculated for either SAE, ISO or ASME bolt materials.

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CALCULATOR : Flange Design Bolt Load And Design Flange Pressure [FREE]   ±

Calculate flange bolt design load, design stress and flange design pressure.

The bolt tensile area can be calculated for either ANSI threads based on threads per inch, or ISO threads based on thread pitch. The design load is equal to the design stress times the tensile area. The flange design pressure is calculated with no gasket preload, bending moment, or external loads. For flanges with gasket preload, bending moment, or external loads, the design pressure can be used as an equivalent pressure (there are various formula to calculate an equivalent pressure).

Tool Input

  • syutype : Stress Schedule
  • mattype : Bolt Material Type
    • SMYSu : User Defined Specified Minimum Yield Stress
  • bolttype : Bolt Schedule
  • diabtype : Bolt Size
    • Du : User Defined Bolt Diameter
    • Pu : User Defined Pitch Length
    • TPIu : User Defined Threads Per Inch
  • areatype : Bolt Tensile Area Type
    • Axu : User Defined Bolt Tensile Area
  • satype : Design Stress Type
    • Sau : User Defined Bolt Design Stress
  • dfactype : Stress Design Factor Type
    • Fdu : User Defined Stress Design Factor
  • sfactype : Safety Factor Type
    • SFu : User Defined Safety Factor
  • loadtype : Bolt And Flange Load Type
    • Nbu : User Defined Bolt Load
    • Sbu : User Defined Bolt Stress
    • Pfu : User Defined Flange Pressure
  • G : Gasket Outside Diameter
  • NN : Number Of Bolts

Tool Output

  • AX : Bolt Tensile Area
  • Ap : Gasket Internal Cross Section Area
  • D : Bolt Diameter
  • Fd : Stress Design Factor
  • Nb : Bolt Load
  • P : Bolt Thread Pitch
  • Pf : Flange Pressure
  • SF : Safety Factor
  • SMYS : Yield Stress
  • Sb : Bolt Stress
  • Sb/Sd : Bolt Stress Over Design Stress Ratio
  • Sd : Design Bolt Stress
  • TPI : Bolt Threads Per Inch