A335-P92 Material Properties

Hello!

We can use A335-P92 material in AutoPIPE, but I don't know where the material properties come from.

I can find only thermal expansion coefficient and allowable stress from ASME B31.1 and ASME Sec II, Part D respectively. But they are a little bit different from the values in AutoPIPE.

Even, I can't find elastic modulus of A335-P92 in code.

What is the basis of A335-P92 material properties in AutoPIPE?

 

SA335 P92

(9Cr-2W-0.6Mo-0.25V)

Pipe Temperature

Linear Thermal expansion co-efficient,α,

mm/m

Hot Elastic Modulus,

Eh,

Kg/cm2x10^6

Allowable Hot Stress,

Sh

Kg/cm2

As Per AutoPipe

603 °C

7.5

1.27

760.5

As Per ASME B31.1,2014

603 °C

Not Available

Not Available

760.1

As Per ASME Sec II, Part D

603 °C

7.3

Not Available

Not Available

Thank you!

  • Hello Hyukchan Kwon, 

    See WIKI here , example #3, for details on how to find out this information from AutoPIPE help. It is a very simple process. To answer your question directly for material library = B311-14: 

    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)

     

    Regards,

    Mike Dattilio
    Bentley Systems Design Analyst
    Design Engineering Analysis group
    ===================================================

    Answer Verified By: Mike Dattilio 

  • Hi Mike,

    But there seems to be a problem !

    The reference for thermal expansion as well as "Elastic Modulus" from T92/P92 Book, Vallourec & Mannesmann Tubes (2000) seems to be superseded by article PWR2005-50110 (ASME Power) 2005 article.

    And there is a huge difference in particularly the Hot Modulus of Elasticity huge should be much lower than the ones of Vallourec book.

    With best regards,

    Swagatam