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Material Stress Modules

Keyword(s) Material Stress. For a new search enter search key word(s) then click GO GO

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CALCULATOR MODULE : ASME B31.3 Process Piping Basic Allowable Stress   ±

Calculate ASME B31.3 process piping allowable stress (S), yield stress (SYT) and tensile stress (SUT) from temperature for low pressure piping (ASME B31.3 Table A-1) and high pressure piping (ASME B31.3 Table K-1).

Stress values are interpolated from the US data tables (US units govern). 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 from 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 (Table A-1 or K-1). 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. Change units on the setup page. Use the workbook ASME B31.3 data tables to look up allowable stress data.

Note : The choice of high pressure versus low pressure service is at the discretion of the owner (section FK300). The ASME B16.5 Class 2500 pressure temperature rating for the material group is often used as a criteria.

Reference : ANSI/ASME B31.3 : Process Piping (2018)

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CALCULATOR MODULE : ASME B31.3 Process Piping Wall Thickness   ±

Calculate ASME B31.3 process piping wall thickness from temperature for low pressure steel pipe (Table A-1), high pressure steel pipe (Table K-1), and plastic piping.

Allowable stress for steel pipe is calculated from Table A-1 and Table K-1 US values (US units govern). Change units on the setup page. Stress values can be extrapolated for temperatures above the data range (care is required when using extrapolated values). The wall thickness calculations are valid for internal overpressure only. For combined internal and external pressure use the pressure difference in the calculations.

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 (Table A-1, or Table K-1). Use the Result Table option to display a table of wall thickness and allowable pressure versus material type (for the calculate wall thickness option the allowable pressure equals the design pressure. for the specified wall thickness option the wall thickness equals the specified wall thickness). Refer to the help pages for notes on the data tables. Change units on the setup page. Use the workbook ASME B31.3 data tables to look up allowable stress data.

Note : The choice of high pressure versus low pressure service is at the discretion of the owner (section FK300). The ASME B16.5 Class 2500 pressure temperature rating for the material group is often used as a criteria.

Reference : ANSI/ASME B31.3 : Process Piping (2018)

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CALCULATOR MODULE : ASME B31.3 Process Piping Minimum Temperature For Impact Testing   ±

Calculate ASME B31.3 process piping minimum temperature for impact testing from wall thickness and material type.

For carbon steel materials with a minimum temperature letter designation, the minimum temperature for testing can be calculated according to table 323.2.2A (curves A, B, C and D).

If the maximum stress is less than the design stress, the impact testing temperature can be reduced according to figure 323.2.2B using the stress ratio. The stress ratio is the maximum of hoop stress over design stress, combined stress over design stress, or operating pressure over pressure rating for pressure rated components. The reduction in impact testing temperature from stress ratio is valid for minimum temperatures listed in table A-1, and for minimum temnperatures calculated from a letter designation (curves A, B, C or D). Use the workbook ASME B31.3 data tables to look up minimum temperature and letter designation data.

Reference : ANSI/ASME B31.3 : Process Piping (2018)

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CALCULATOR MODULE : ASME B31.3 Process Piping Allowable Bolt Load And Bolt Stress   ±

Calculate ASME B31.3 process piping bolt design load and design stress from temperature (ASME B31.3 Table A-2). Stress values are interpolated from the US data tables (US units govern).

Bolt load is calculated from the design stress and the tensile area for either ANSI threads or ISO threads. 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 from 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 design stress versus temperature for the selected material. Use the Data Table option to display the data table (Table A-2). Use the Result Table option to display a table of design stress and design load versus either material type or bolt diameter. Refer to the help pages for notes on the data tables. Use the workbook ASME B31.3 data tables to look up bolt allowable stress data.

Reference : ANSI/ASME B31.3 : Process Piping (2018)

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CALCULATOR MODULE : ASME B31.4 Liquid Pipeline Allowable Stress   ±

Calculate ASME B31.4 oil and liquid pipeline allowable stress for onshore and offshore pipelines.

Select the appropriate stress table (API, ASM, DNV etc), and material. Use the Result Table option to display the results for the selected stress table (click the Result Table button on the plot bar, then click the make table button). For metal pipeline the pressure design thickness equals the nominal wall thickness minus the corrosion allowance. Fabrication tolerance is ignored.

Reference : ANSI/ASME B31.4 : Pipeline Transportation Systems For Liquids And Slurries (2012)

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CALCULATOR MODULE : ASME B31.8 Gas Pipeline Allowable Stress   ±

Calculate ASME B31.8 gas pipeline allowable stress from temperature for onshore and offshore pipelines.

Select the appropriate stress table (API, ASM, DNV etc), and material. Use the Result Table option to display the results for the selected stress table (click the Result Table button on the plot bar, then click the make table button). For metal pipeline the pressure design thickness equals the nominal wall thickness minus the corrosion allowance. Fabrication tolerance is ignored.

Reference : ANSI/ASME B31.8 : Gas Transmission And Distribution Piping Systems (2018)

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CALCULATOR MODULE : ASME B31.1 Power Piping Allowable Stress   ±

Calculate ASME B31.1 power piping basic allowable stress (S), allowable stress (SE), design stress (SEW), tensile stress (SUT), and yield stress (SYT) from the design temperature (US units).

The allowable stress (SE) is calculated from tables A-1 to A-10. The calculated stress values are constant for temperatures below the data range. For temperatures above the data range, the stress values can be calculated as either a constant value from the highest data point, constant slope from the highest data point, or set to zero. Stress values for temperatures above the data range should be ued carefully (engineering judgement is required).

The yield stress and tensile stress are assumed to be proportional to the allowable stress (approximate only). Actual yield stress and tensile stress temperature data should be used if it is available. The weld factor is only relevant for temperatures in the creep range. The weld factor W = 1 for temperatures below the creep onset temperature, or for seamless pipe.

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. The calculations use US standard units. Change input and output units on the setup page. Refer to the help pages for notes on the data tables (click the resources button on the data bar). Use the workbook ASME B31.1 data tables to look up allowable stress data.

Reference : ANSI/ASME B31.1 : Power Piping (2014)

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CALCULATOR MODULE : ASME B31.1 Power Piping Allowable Bolt Load And Bolt Stress   ±

Calculate ASME B31.1 power piping allowable bolt load and bolt stress from temperature (US units).

Allowable bolt stress is calculated from tables A-10. Bolt tensile area can be calculated for either ANSI threads, or ISO threads.

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 (ASME B31.1 Table A-10). Use the Result Table option to display a table of allowable stress and allowable load versus material type. Use the workbook ASME B31.1 data tables to look up allowable bolt stress data.

Reference : ANSI/ASME B31.1 : Power Piping (2014)

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CALCULATOR MODULE : 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 MODULE : ASME B31.5 Refrigeration Piping Minimum Temperature For Impact Testing   ±

Calculate ASME B31.5 refrigeration piping minimum temperature for impact testing from wall thickness and material type.

For carbon steel materials with a minimum temperature letter designation, the minimum temperature for testing can be calculated according to table 523.2.2 (curves A, B and C).

If the maximum stress is less than the design stress, the impact testing temperature can be reduced according to figure 523.2.2 using the stress ratio (the ratio of design tensile streess over allowable stress). Use the hoop stress calculator to calculate the hoop tensile stress. Use the flexibility calculators to calculate longitudinal tensile stress. Use the workbook ASME B31.5 data tables to look up minimum temperature and letter designation data.

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

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CALCULATOR MODULE : Pipeline Allowable Stress   ±

Calculate pipeline allowable stress from the specified minimum yield stress (SMYS) and the design factor (EF).

The SMYS is calculated from the pipe stress tables (API, ASME or DNV). The design factor equals the quality factor multiplied by the stress factor (EF = E x F). The quality factor (E) can be used to account for either casting defects, or longitudinal weld joint effects. The stress factor (F) is used to account for design risks (for high risks use a low design factor etc). Use the Result Table option to display the results for the selected stress table.

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CALCULATOR MODULE : API RP 1102 Pipeline Design Stress And Design Pressure   ±

Calculate API RP 1102 pipeline allowable stress and maximum allowable design pressure from wall thickness.

The allowable stress is calculated from the SMYS, diameter and wall thickness. The allowable pressure is calculated so that the hoop stress equals the allowable stress, allowing for pipe wall allowances. Use the Result Table option to display the calculated stress and allowable pressure values.

Reference : API RP 1102 : Steel Pipelines Crossing Railroads and Highways (2012)

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CALCULATOR MODULE : API 5L Line Pipe SMYS And SMTS   ±

Calculate API 5L line pipe specified minimum yield stress (SMYS) and specified minimum tensile stress (SMTS). API 5L yield stress is normally measured at 0.5% strain.

References :

API 5L : Specification for Line Pipe (2007)
ISO 3183 : Petroleum and Natural Gas Industries - Steel Pipe For Pipeline Transportation Systems (2007)

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CALCULATOR MODULE : AS 2885.1 Pipeline Allowable Stress   ±

Calculate AS 2885.1 pipeline yield stress and allowable stress.

Select the appropriate stress table (API, ASM, DNV etc), material, and design factor. Use the Result Table option to display the results for the selected stress table (click the Result Table button on the plot bar, then click the make table button). The pressure design thickness equals the nominal wall thickness minus the corrosion allowance. The fabrication allowance is only required for pipes where the fabrication tolerance exceeds the relevant specification (for example some grades of seamless pipe).

Reference : Australian Standard AS 2885.1 : Pipelines - Gas And Liquid Petroleum Part 1 : Design And Construction (2015)

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CALCULATOR MODULE : Engineering Stress And Strain   ±

Calculate material stress and strain.

Engineering stress is the ratio of load over the unstressed cross section area. Engineering strain is the ratio of change in length over the unstressed length. The elastic modulus is the ratio of engineering stress over engineering strain. Engineering stress and strain ignores the change in cross section area and length as a load is applied.

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CALCULATOR MODULE : Ramberg Osgood Stress Strain Equation   ±

Calculate the Ramberg Osgood stress strain equation coefficients.

The Ramberg Osgood equation is an approximate model of strain versus stress for a work hardening material. The Ramberg Osgood equation is continuous, and does not have a distinct yield point, or a yield plateau. The elongation is initially elastic, and becomes progressively more plastic as the load is applied.

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CALCULATOR MODULE : True Stress And Strain   ±

Calculate true stress and strain, and engineering stress and strain.

Engineering stress and strain are calculated from the unstressed material length and cross section area. True stress and strain are calculated from the deformed length and cross section area.

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CALCULATOR MODULE : DNVGL RP C203 Pipeline Fatigue Stress   ±
CALCULATOR MODULE : DNVGL RP C203 Fatigue Stress Limit   ±
CALCULATOR MODULE : DNVGL RP C203 Fatigue Stress Concentration Factor   ±
CALCULATOR MODULE : DNVGL RP C203 Fatigue Stress Amplitude   ±
CALCULATOR MODULE : DNVGL RP C203 Mean Stress Factor   ±
CALCULATOR MODULE : DNVGL RP C203 Tubular Fatigue Stress   ±
CALCULATOR MODULE : DNVGL RP C203 Flat Plate Fatigue Stress   ±
CALCULATOR MODULE : DNVGL RP C203 Bolt Fatigue Stress   ±
DATA MODULE : Flange Bolt ( Open In Popup Workbook )   ±
DATA MODULE : Material Tensile Strength ( Open In Popup Workbook )   ±
DATA MODULE : ASME ANSI API Design Factor ( Open In Popup Workbook )   ±
DATA MODULE : DNVGL Design Factor ( Open In Popup Workbook )   ±
DATA MODULE : ASME B31.1 Power Piping Allowable Stress ( Open In Popup Workbook )   ±
DATA MODULE : ASME B31.1 Power Piping Plastic Component ( Open In Popup Workbook )   ±

Data tables for ASME B31.1 power piping plastic components.

Design stress and temperature limits for thermoplastic piping (table N-102.2.1(a)-1), laminated reinforced thermosetting resin piping (table N-102.2.1(a)-2), and machine-made reinforced thermosetting resin pipe (table N-102.2.1(a)-3).

Reference : ANSI/ASME B31.1 : Power Piping

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DATA MODULE : ASME B31.1 Power Piping Allowable Bolt Stress ( Open In Popup Workbook )   ±

Bolt allowable stress data for ASME B31.1 power piping (Table A-10 US values).

Use the ASME B31.1 allowable bolt load and bolt stress calculators (see link below) to calculate the allowable bolt stress and allowable bolt load from temperature.

Reference : ANSI/ASME B31.1 : Power Piping

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DATA MODULE : ASME B31.3 Process Piping Allowable Stress ( Open In Popup Workbook )   ±
DATA MODULE : ASME B31.3 Process Piping Allowable Bolt Stress ( Open In Popup Workbook )   ±
DATA MODULE : ASME B31.5 Refrigeration Piping Allowable Stress ( Open In Popup Workbook )   ±
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