I am using Aluminum piping throughout my model. To accomplish this, i am using Material: (14) ALUMINUM as 6061-T6 was not an option. However, when I run my error check I am receiving numerous errors of 121E and 253E

121E: Hot allowable 1 on element 10 to 20 is not specified, while the corresponding temperature is. Shx is needed for allowable calculations.

253E: On element 10 to 20 cold allowable is not specified. It is set to 0.0.


What is causing this? How do I resolve these errors?


Any help is appreciated.

Thank you,
-Drew

The first group of materials from Low Carbon Steel to User-Defined are the original generic materials - they are not tied to allowable stress data.

Search for 6061 and you will find your aluminum with basic allowable stress data. Its material index 312 (B241 6061 T6).

Thank you very much. That solved my problem.