What are acceptable brinell hardness values for P5A.

[ryanethan]

Just wondering what acceptable Brinell hardness values are for P5A to P1 material as related to B31.1. Welded with 9018. Would a value of 207 be acceptable for the weld?

 

[metengr]

Yes, a 207 BHN would be aceptable for E9018 B3 weld metal.

 

[DVWE]

If you have a copy of B31.3, look at table 311.1.1 at the very end column. I don't have a copy of B31.1, but I would guess there's a similar table in there.

Are you welding P5A to P1? Or do you want to know the acceptable values from P5A to P1?

 

[metengr]

There are no hardness requirements in ASME B31.1 for PWHT.

 

[DVWE]

API 582 is also a good reference for hardness requirements of carbon and low alloy steels if B31.1 is lacking them.