P and S numbers
P and S numbers
(OP)
What does the P number and S number stand for. Also what an F number and A number stands for.
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RE: P and S numbers
The P-No classification was established by ASME Boiler and Pressure Vessel Code, SC IX to group metals having similar weldability characteristics.
The S-No was developed for metals that were not endorsed by ASME Boiler and Pressure Vessel Code, SC II. Again, the same premise applies regarding S-No classification as P-No classification.
The F-No is a classification for filler metals, similar to P and S-No classification.
The A-No define chemical composition for various filler metals and was established by AWS, years ago.
RE: P and S numbers
RE: P and S numbers
http://www.pnumbers.com/
The above will get you started. Get a copy of ASME Boiler and Pressure Vessel Code, Section IX, you should read Article 1 and 2.
RE: P and S numbers
RE: P and S numbers