WPS for review
WPS for review
(OP)
Hello everyone, I have a WPS for review to get your opinions please.
1. Base metals: ASTM A-510-06 GRADE 4130 to A 106 GRADE B
2. Purpose: For welding the last API flange (4130) to flow line pipe (A106), that is where the code break goes from API 6A to ASME B31.3
3. filler metals: GTAW root and E7018 fill and cap
4. Pre-heat: 300 F minimum
5. PWHT: 1250+-25F 1hr/inch of thickness, but not less than 1.5hr
6. Base metal thickness: 0.600"
7. Thickness range qualified: 0.1875" - 1.200"
8. Charpy Impact testing: None (MDT is above -20F)
9. Position and progression: All and Upwards
10. Additional question: I understand that 4130 being an unassigned metal when qualified cannot be substituted for say a 4140, etc. But my question is, the PQR welds 4130 to A106B, this qualifies 4130 to any P1 of thesame class as A106B right? like A106A, C, X-42, X-46, X-52...
Thanks you very much for your help!
1. Base metals: ASTM A-510-06 GRADE 4130 to A 106 GRADE B
2. Purpose: For welding the last API flange (4130) to flow line pipe (A106), that is where the code break goes from API 6A to ASME B31.3
3. filler metals: GTAW root and E7018 fill and cap
4. Pre-heat: 300 F minimum
5. PWHT: 1250+-25F 1hr/inch of thickness, but not less than 1.5hr
6. Base metal thickness: 0.600"
7. Thickness range qualified: 0.1875" - 1.200"
8. Charpy Impact testing: None (MDT is above -20F)
9. Position and progression: All and Upwards
10. Additional question: I understand that 4130 being an unassigned metal when qualified cannot be substituted for say a 4140, etc. But my question is, the PQR welds 4130 to A106B, this qualifies 4130 to any P1 of thesame class as A106B right? like A106A, C, X-42, X-46, X-52...
Thanks you very much for your help!





RE: WPS for review
RE: WPS for review
Last Question, the absence of Charpy impact testing is not a problem for the application, service, and materials right?
THANKS A LOT
RE: WPS for review
RE: WPS for review
meaning if know it will not go below -20F then the WPS is good right despite the presence of a 4130 in the weld?
If the above is yes, will that be the same for a 4130 to 4130 weld with the variables similar to the one posted above?
RE: WPS for review
RE: WPS for review
RE: WPS for review
RE: WPS for review
As much as possible, do it right the first time...
RE: WPS for review
Without all this data, you will need to make another PQR coupon, but only run Charpies on it. You've already proved out the WPS/PQR with the earlier destructive testing.