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AutoPIPE Wiki 01e. What references were used to create AutoPIPE's code and non-code material libraries?
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            • 01d. How to review a material library default values in AutoPIPE?
            • 01e. What references were used to create AutoPIPE's code and non-code material libraries?
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     Questions about this article, topic, or product? Click here. 

    01e. What references were used to create AutoPIPE's code and non-code material libraries?

    Applies To
    Product(s): AutoPIPE,
    Version(s): All
    Area: Libraries
    Original Author: Bentley Technical Support Group

    Problem:

    What references were used to create AutoPIPE's code and non-code material libraries?

    Solution:

    Refer to the online help for references used by AutoPIPE to create the libraries:

    Please see the following AutoPIPE help section: 
    Help > Contents> Contents Tab> Reference Information> Libraries>

                     A. Standard Pipe Materials (find description with reference to Thermal Exp Coeff & 
                             Young's Mod).

                     B. Code Dependent Pipe Materials (find Yield Stress & Allowable Stress code ref. including
                             a reference to the Standard Pipe Material listing above).

    Example #1:

    what reference was used to create the material library for ASME B31.3 - 2010, A53-A:

    From the Code Dependent Pipe Materials, find the following:

    Use CS, and open the same code year Standard Pipe Material library to find the following:

    Answer:

    Yield Stress values were taken from ASME IID
    Allowable Stress value were taken from ASME B31.3-2010
    Thermal Expan. Coef. values were taken from ASME B31.3-2010
    Young's Modulus values were taken from ASME B31.3-2010

    Notes: 

    1. click here to see details on how to make changes to AutoPIPE's material library file.

    2. When validating the AutoPIPE library data against the reference, be sure to check the entire reference as their can be multiple entries for the same material.

    Example,

    According to AutoPIPE material Library, ASME B31.3-2012, A312-TP321, min Yield = 30 ksi, Ultimate = 75 ksi

    ASME IID, Material data shows, min Yield = 25 ksi, Ultimate = 70 ksi. However, upon looking further down the reference, there is another entry for the exact same material based on a different wall thickness:



    3. Why do some material values not match code values for specified wall thickness?

    Example:  

    Code = ASME B31.3 - 2012,

    Material = A312-TP321,

    Wall Thickness =  >10 mm ,

    Reference = ASME 2010 Sec. 2 Part D  

    Cold Tensile Strength  = 485 MPa

    Cold Yield Strength = 170 MPa,

    Reference = AutoPIPE library 

    Cold Ultimate Strength  = 517.1 MPa

    Cold Yield Strength = 206.8 MPA 

    Question:

    Why is Yield Strength and Tensile so different?

    Answer:

    The values for yield and tensile strength for wall thickness less than 3/8" are not all available in our library. Avoidance on this would be to enter minimum and ultimate values manually based on the thickness of the pipeID, This issue has been logged under :

    TFS-D328259: B31.3 Material Library: Allow minimum yield and ultimate strength based on pipe thickness

    Example #2:

    Question:

    what reference was used to create the material library for ASME B31.1 - 2014, A335-P2?

    From the Code Dependent Pipe Materials, find the following:

    Use LC, and open the same code year Standard Pipe Material library to find the following:

    Answer:

    Yield Stress values were taken from ASME B31.1 - 2014
    Ultimate Stress values were taken from ASME B31.1 - 2014
    Allowable Stress value were taken from ASME B31.1 - 2014
    Thermal Expan. Coef. values were taken from ASME B31.1 - 2014
    Young's Modulus values were taken from ASME B31.1 - 2014

    Confirm values and reference information: 

    Step A. Scan Spec and Material Library for default values using procedure here: 

    Step B: Open reference source mentioned above and search for relevant tables / figures as needed. In this case see Table A1, B, & C

      

    Step C. Manually compare reference information to AutoPIPE Library files and note that the data is exactly the same. Remember if you are using a non-English unit, the values may differ slightly (see why here). 

    Example #3:

    Question:

    What reference was used to create the material library for ASME B31.1 - 2014, A335-P92?

    From the Code Dependent Pipe Materials, find the following:

    Use UC1, and open the same code year Standard Pipe Material library to find the following:

    Answer:

    Yield Stress values were taken from ASME B31.1 - 2014
    Ultimate Stress values were taken from ASME B31.1 - 2014
    Allowable Stress value were taken from ASME B31.1 - 2014
    Thermal Expan. Coef. values were taken from T92/P92 Book, Vallourec & Mannesmann Tubes (2000)
    Young's Modulus values were taken from T92/P92 Book, Vallourec & Mannesmann Tubes (2000)

    See Also

    Libraries - AutoPIPE

    Bentley AutoPIPE

    External Links

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    • Mike Dattilio Created by Bentley Colleague Mike Dattilio
    • When: Wed, Dec 3 2014 5:55 PM
    • Mike Dattilio Last revision by Bentley Colleague Mike Dattilio
    • When: Fri, Feb 5 2021 10:09 AM
    • Revisions: 14
    • Comments: 0
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