Nitrogen and Aluminum in SA 105N

[SWMechanical]

What is the maximum amount of Nitrogen and Aluminum in SA 105N?

ASME specifications did not give the requirements for these two elements. But the mill certification I received from manufacturer indicated the amount of 0.012% of nitrogen and 0.028& of aluminum in SA 105N. Is this acceptable?

Thanks,

 

[metengr]

The aluminium content is within an expected range for fine grain practice, and nitrogen is also within an acceptable range. Also, suggested reading is ASME SA 751.

 

[SWMechanical]

Thank you metengr.

Is 0.001% of Arsenic and 0.002% of Antimony in SA 105 acceptable?

 

[metengr]

Yes, tramp elements.