Service-Condition Alloy Shortlist

Grade selection on a pressure part or process part is decided by service condition first and price second. Describe the duty and the tool returns the candidate stock grades, what actually decides between them, and what the drawing has to state before anyone can quote.

Describe the service condition

1. What is the part exposed to?
2. Metal temperature in service
3. Mechanical duty on the critical face
4. Is the part welded, or does it carry residual stress?

This shortlist is engineering guidance towards choosing machining stock. It is not a conformity assessment, and it is not a substitute for corrosion engineering on your process. Grade selection for finished pressure equipment is governed by the equipment manufacturer or the notified body under Directive 2014/68/EU. Send the service condition with the drawing and the grade is confirmed case by case in the quotation. Full material index: Materials.