AMS4027 compatable to ASME-SB-221 / ASTM-B221 1

[Roadking77]

OK I give up!!!
I have been trying to research if a material called out as AMS4027 can be certified with ASME-SB-221 / ASTM-B221?
I have a cert for the ASME-SB-221 but the material call out is AMS4027.
If this is crazy please let me know I'm a machinist not an engineer.

 

[TVP]

If the drawing specifies SAE AMS 4027, then you cannot use an ASTM standard material unless your customer accepts a deviation. In general, aerospace standards like SAE AMS are more stringent than industry stands like ASTM, so your customer may reject this request if it is for a critical part.