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ASME B31.5 Refrigeration Piping Allowable Stress

Calculate ASME B31.5 refrigeration piping allowable stress (S), yield stress (SYT) and tensile stress (SUT) from the design temperature.

Stress values are calculated from temperature using Table 502.3.1 (US values). Change units on the setup page. For temperatures below the data range, the stress value is constant (fracture toughness should also be considered for low temperature operation). For temperatures above the data range the stress values can either be constant value for the end point, constant slope from the end point, or zero from the end point. Engineering judgement is required to use extrapolated values above the data range.

Use the data plot option to plot the allowable stress versus temperature for the selected material. Use the Data Table option to display the data table in the popup window. Use the Result Table option to display a table of allowable stress versus material type. Refer to the help pages for notes on the data tables. Use the workbook ASME B31.5 data tables to look up allowable stress data.

Reference : ANSI/ASME B31.5 : Refrigeration Piping And Heat Transfer Components (2013)

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CALCULATOR : ASME B31.5 Table 502.3.1 Maximum Allowable Stress Carbon Steel Seamless Pipe And Tube [PLUS]   ±

Calculate maximum allowable stress for carbon steel seamless pipe and tube (ASME B31.5 Table 502.3.1 US units).

The minimum temperature is specified as either a numeric value (eg -20), or as a curve from Table 523.2.2. The minimum temperature is also dependent on the stress ratio. Use the minimum temperature calculators to calculate the minimum temperature.

The basic allowable stress is calculated by dividing the allowable stress by the quality factor E. For seamless pipe the quality factor equals 1.0.

Tool Input

  • datatype : Material Type And Grade
  • OOR : If Temperature Above Data Range
  • Td : Design Temperature

Tool Output

  • E : Quality Factor
  • S : Allowable Stress
  • SE : Maximum Allowable Stress Table 502.3.1
  • SMTS : SMTS At 100 F
  • SMYS : SMYS At 100 F
  • SUT : Tensile Stress At Design Temperature
  • SYT : Yield Stress At Design Temperature
  • Sdata : Stress Data
  • So : Allowable Stress At 100 F
  • Tdata : Temperature Data
  • Tmin : Minimum Temperature
CALCULATOR : ASME B31.5 Table 502.3.1 Maximum Allowable Stress Carbon Steel Welded Pipe And Tube [PLUS]   ±

Calculate maximum allowable stress for carbon steel welded pipe and tube (ASME B31.5 Table 502.3.1 US units).

The minimum temperature is specified as either a numeric value (eg -20), or as a curve from Table 523.2.2. The minimum temperature is also dependent on the stress ratio. Use the minimum temperature calculators to calculate the minimum temperature.

The basic allowable stress is calculated by dividing the allowable stress by the quality factor E. For seamless pipe the quality factor equals 1.0.

Tool Input

  • datatype : Material Type And Grade
  • OOR : If Temperature Above Data Range
  • Td : Design Temperature

Tool Output

  • E : Quality Factor
  • S : Allowable Stress
  • SE : Maximum Allowable Stress Table 502.3.1
  • SMTS : SMTS At 100 F
  • SMYS : SMYS At 100 F
  • SUT : Tensile Stress At Design Temperature
  • SYT : Yield Stress At Design Temperature
  • Sdata : Stress Data
  • So : Allowable Stress At 100 F
  • Tdata : Temperature Data
  • Tmin : Minimum Temperature
CALCULATOR : ASME B31.5 Table 502.3.1 Maximum Allowable Stress Carbon Steel Electric Resistance Welded Pipe And Tube [PLUS]   ±

Calculate maximum allowable stress for carbon steel electric resistance welded pipe and tube (ASME B31.5 Table 502.3.1 US units).

The minimum temperature is specified as either a numeric value (eg -20), or as a curve from Table 523.2.2. The minimum temperature is also dependent on the stress ratio. Use the minimum temperature calculators to calculate the minimum temperature.

The basic allowable stress is calculated by dividing the allowable stress by the quality factor E. For seamless pipe the quality factor equals 1.0.

Tool Input

  • datatype : Material Type And Grade
  • OOR : If Temperature Above Data Range
  • Td : Design Temperature

Tool Output

  • E : Quality Factor
  • S : Allowable Stress
  • SE : Maximum Allowable Stress Table 502.3.1
  • SMTS : SMTS At 100 F
  • SMYS : SMYS At 100 F
  • SUT : Tensile Stress At Design Temperature
  • SYT : Yield Stress At Design Temperature
  • Sdata : Stress Data
  • So : Allowable Stress At 100 F
  • Tdata : Temperature Data
  • Tmin : Minimum Temperature
CALCULATOR : ASME B31.5 Table 502.3.1 Maximum Allowable Stress Carbon Steel Electric Fusion Welded Pipe And Tube [PLUS]   ±

Calculate maximum allowable stress for carbon steel electric fusion welded pipe and tube (ASME B31.5 Table 502.3.1 US units).

The minimum temperature is specified as either a numeric value (eg -20), or as a curve from Table 523.2.2. The minimum temperature is also dependent on the stress ratio. Use the minimum temperature calculators to calculate the minimum temperature.

The basic allowable stress is calculated by dividing the allowable stress by the quality factor E. For seamless pipe the quality factor equals 1.0.

Tool Input

  • datatype : Material Type And Grade
  • OOR : If Temperature Above Data Range
  • Td : Design Temperature

Tool Output

  • E : Quality Factor
  • S : Allowable Stress
  • SE : Maximum Allowable Stress Table 502.3.1
  • SMTS : SMTS At 100 F
  • SMYS : SMYS At 100 F
  • SUT : Tensile Stress At Design Temperature
  • SYT : Yield Stress At Design Temperature
  • Sdata : Stress Data
  • So : Allowable Stress At 100 F
  • Tdata : Temperature Data
  • Tmin : Minimum Temperature
CALCULATOR : ASME B31.5 Table 502.3.1 Maximum Allowable Stress Carbon Steel Copper Brazed Pipe And Tube [PLUS]   ±

Calculate maximum allowable stress for carbon steel copper brazed pipe and tube (ASME B31.5 Table 502.3.1 US units).

The minimum temperature is specified as either a numeric value (eg -20), or as a curve from Table 523.2.2. The minimum temperature is also dependent on the stress ratio. Use the minimum temperature calculators to calculate the minimum temperature.

The basic allowable stress is calculated by dividing the allowable stress by the quality factor E. For seamless pipe the quality factor equals 1.0.

Tool Input

  • datatype : Material Type And Grade
  • OOR : If Temperature Above Data Range
  • Td : Design Temperature

Tool Output

  • E : Quality Factor
  • S : Allowable Stress
  • SE : Maximum Allowable Stress Table 502.3.1
  • SMTS : SMTS At 100 F
  • SMYS : SMYS At 100 F
  • SUT : Tensile Stress At Design Temperature
  • SYT : Yield Stress At Design Temperature
  • Sdata : Stress Data
  • So : Allowable Stress At 100 F
  • Tdata : Temperature Data
  • Tmin : Minimum Temperature
CALCULATOR : ASME B31.5 Table 502.3.1 Maximum Allowable Stress Alloy Steel Seamless Pipe And Tube [PLUS]   ±

Calculate maximum allowable stress for alloy steel seamless pipe and tube (ASME B31.5 Table 502.3.1 US units).

The minimum temperature is specified as either a numeric value (eg -20), or as a curve from Table 523.2.2. The minimum temperature is also dependent on the stress ratio. Use the minimum temperature calculator to calculate the minimum temperature.

The basic allowable stress is calculated by dividing the allowable stress by the quality factor E. For seamless pipe the quality factor equals 1.0.

Tool Input

  • datatype : Material Type And Grade
  • OOR : If Temperature Above Data Range
  • Td : Design Temperature

Tool Output

  • E : Quality Factor
  • S : Allowable Stress
  • SE : Maximum Allowable Stress Table 502.3.1
  • SMTS : SMTS At 100 F
  • SMYS : SMYS At 100 F
  • SUT : Tensile Stress At Design Temperature
  • SYT : Yield Stress At Design Temperature
  • Sdata : Stress Data
  • So : Allowable Stress At 100 F
  • Tdata : Temperature Data
  • Tmin : Minimum Temperature
CALCULATOR : ASME B31.5 Table 502.3.1 Maximum Allowable Stress Alloy Steel Electric Resistance Welded Pipe And Tube [PLUS]   ±

Calculate maximum allowable stress for alloy steel electric resistance welded pipe and tube (ASME B31.5 Table 502.3.1 US units).

The minimum temperature is specified as either a numeric value (eg -20), or as a curve from Table 523.2.2. The minimum temperature is also dependent on the stress ratio. Use the minimum temperature calculator to calculate the minimum temperature.

The basic allowable stress is calculated by dividing the allowable stress by the quality factor E. For seamless pipe the quality factor equals 1.0.

Tool Input

  • datatype : Material Type And Grade
  • OOR : If Temperature Above Data Range
  • Td : Design Temperature

Tool Output

  • E : Quality Factor
  • S : Allowable Stress
  • SE : Maximum Allowable Stress Table 502.3.1
  • SMTS : SMTS At 100 F
  • SMYS : SMYS At 100 F
  • SUT : Tensile Stress At Design Temperature
  • SYT : Yield Stress At Design Temperature
  • Sdata : Stress Data
  • So : Allowable Stress At 100 F
  • Tdata : Temperature Data
  • Tmin : Minimum Temperature
CALCULATOR : ASME B31.5 Table 502.3.1 Maximum Allowable Stress Austenitic Stainless Steel Seamless Pipe And Tube [PLUS]   ±

Calculate maximum allowable stress for austenitic stainless steel seamless pipe and tube (ASME B31.5 Table 502.3.1 US units).

The minimum temperature is specified as either a numeric value (eg -20), or as a curve from Table 523.2.2. The minimum temperature is also dependent on the stress ratio. Use the minimum temperature calculators to calculate the minimum temperature.

The basic allowable stress is calculated by dividing the allowable stress by the quality factor E. For seamless pipe the quality factor equals 1.0.

Tool Input

  • datatype : Material Type And Grade
  • OOR : If Temperature Above Data Range
  • Td : Design Temperature

Tool Output

  • E : Quality Factor
  • S : Allowable Stress
  • SE : Maximum Allowable Stress Table 502.3.1
  • SMTS : SMTS At 100 F
  • SMYS : SMYS At 100 F
  • SUT : Tensile Stress At Design Temperature
  • SYT : Yield Stress At Design Temperature
  • Sdata : Stress Data
  • So : Allowable Stress At 100 F
  • Tdata : Temperature Data
  • Tmin : Minimum Temperature
CALCULATOR : ASME B31.5 Table 502.3.1 Maximum Allowable Stress Austenitic Stainless Steel Welded Pipe And Tube [PLUS]   ±

Calculate maximum allowable stress for austenitic stainless steel welded pipe and tube (ASME B31.5 Table 502.3.1 US units).

The minimum temperature is specified as either a numeric value (eg -20), or as a curve from Table 523.2.2. The minimum temperature is also dependent on the stress ratio. Use the minimum temperature calculators to calculate the minimum temperature.

The basic allowable stress is calculated by dividing the allowable stress by the quality factor E. For seamless pipe the quality factor equals 1.0.

Tool Input

  • datatype : Material Type And Grade
  • OOR : If Temperature Above Data Range
  • Td : Design Temperature

Tool Output

  • E : Quality Factor
  • S : Allowable Stress
  • SE : Maximum Allowable Stress Table 502.3.1
  • SMTS : SMTS At 100 F
  • SMYS : SMYS At 100 F
  • SUT : Tensile Stress At Design Temperature
  • SYT : Yield Stress At Design Temperature
  • Sdata : Stress Data
  • So : Allowable Stress At 100 F
  • Tdata : Temperature Data
  • Tmin : Minimum Temperature
CALCULATOR : ASME B31.5 Table 502.3.1 Maximum Allowable Stress Copper Alloy Seamless Pipe And Tube [PLUS]   ±

Calculate maximum allowable stress for copper alloy seamless pipe and tube (ASME B31.5 Table 502.3.1 US units).

Tool Input

  • datatype : Material Type And Grade
  • OOR : If Temperature Above Data Range
  • Td : Design Temperature

Tool Output

  • S : Allowable Stress
  • SMTS : SMTS At 100 F
  • SMYS : SMYS At 100 F
  • SUT : Tensile Stress At Design Temperature
  • SYT : Yield Stress At Design Temperature
  • Sdata : Stress Data
  • So : Allowable Stress At 100 F
  • Tdata : Temperature Data

CALCULATOR : ASME B31.5 Table 502.3.1 Maximum Allowable Stress Copper Alloy Welded Pipe And Tube [PLUS]   ±

Calculate maximum allowable stress for copper alloy welded pipe and tube (ASME B31.5 Table 502.3.1 US units).

Tool Input

  • datatype : Material Type And Grade
  • OOR : If Temperature Above Data Range
  • Td : Design Temperature

Tool Output

  • S : Allowable Stress
  • SMTS : SMTS At 100 F
  • SMYS : SMYS At 100 F
  • SUT : Tensile Stress At Design Temperature
  • SYT : Yield Stress At Design Temperature
  • Sdata : Stress Data
  • So : Allowable Stress At 100 F
  • Tdata : Temperature Data

CALCULATOR : ASME B31.5 Table 502.3.1 Maximum Allowable Stress Nickel Alloy Seamless Pipe And Tube [PLUS]   ±

Calculate maximum allowable stress for nickel alloy seamless pipe and tube (ASME B31.5 Table 502.3.1 US units).

Tool Input

  • datatype : Material Type And Grade
  • OOR : If Temperature Above Data Range
  • Td : Design Temperature

Tool Output

  • S : Allowable Stress
  • SMTS : SMTS At 100 F
  • SMYS : SMYS At 100 F
  • SUT : Tensile Stress At Design Temperature
  • SYT : Yield Stress At Design Temperature
  • Sdata : Stress Data
  • So : Allowable Stress At 100 F
  • Tdata : Temperature Data

CALCULATOR : ASME B31.5 Table 502.3.1 Maximum Allowable Stress Aluminium Alloy Seamless Pipe And Tube [PLUS]   ±

Calculate maximum allowable stress for aluminium alloy seamless pipe and tube (ASME B31.5 Table 502.3.1 US units).

Tool Input

  • datatype : Material Type And Grade
  • OOR : If Temperature Above Data Range
  • Td : Design Temperature

Tool Output

  • S : Allowable Stress
  • SMTS : SMTS At 100 F
  • SMYS : SMYS At 100 F
  • SUT : Tensile Stress At Design Temperature
  • SYT : Yield Stress At Design Temperature
  • Sdata : Stress Data
  • So : Allowable Stress At 100 F
  • Tdata : Temperature Data

CALCULATOR : ASME B31.5 Table 502.3.1 Maximum Allowable Stress Iron Castings [PLUS]   ±

Calculate maximum allowable stress for iron castings (ASME B31.5 Table 502.3.1 US units).

The minimum temperature is specified as either a numeric value (eg -20), or as a curve from Table 523.2.2. Use the minimum temperature calculator to calculate the minimum temperature.

Tool Input

  • datatype : Material Type And Grade
  • OOR : If Temperature Above Data Range
  • Td : Design Temperature

Tool Output

  • S : Allowable Stress
  • SMTS : SMTS At 100 F
  • SMYS : SMYS At 100 F
  • SUT : Tensile Stress At Design Temperature
  • SYT : Yield Stress At Design Temperature
  • Sdata : Stress Data
  • So : Allowable Stress At 100 F
  • Tdata : Temperature Data
  • Tmin : Minimum Temperature
CALCULATOR : ASME B31.5 Table 502.3.1 Maximum Allowable Stress Carbon Steel Plate And Sheet [PLUS]   ±

Calculate maximum allowable stress for carbon steel plate and sheet (ASME B31.5 Table 502.3.1 US units).

The minimum temperature is specified as either a numeric value (eg -20), or as a curve from Table 523.2.2. The minimum temperature is also dependent on the stress ratio. Use the minimum temperature calculators to calculate the minimum temperature.

Tool Input

  • datatype : Material Type And Grade
  • OOR : If Temperature Above Data Range
  • Td : Design Temperature

Tool Output

  • S : Allowable Stress
  • SMTS : SMTS At 100 F
  • SMYS : SMYS At 100 F
  • SUT : Tensile Stress At Design Temperature
  • SYT : Yield Stress At Design Temperature
  • Sdata : Stress Data
  • So : Allowable Stress At 100 F
  • Tdata : Temperature Data
  • Tmin : Minimum Temperature
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