AMS 5581|GE B50TF133-S3|CL A AMEND 1|AMS 5581F|ASTM B444-16|CL A AM 1|AMS5581G TYPE 1|B50TF133-S3 CL-A|AMS-5581G|GE-S400|ASTM B444-23|B50TF133-S3 CL-A A.1