What is the minimum number of fields to be analyzed for ferrite point count for duplex stainless steel weld metal per NACE MR0175. This specification does not indicate this in Par. A.7.3.
The laboratory performed face and root bend tests at full thickness, (i.e. 1/2 inch), instead of 3/8 in. as specified on material with greater than 20% elongation. Instead of bending the specimens with at 1.5" diameter, they were bent with a 2" dia. to obtain the same outer fiber elongation. I...
I have already qualified this procedure. What thickness is required for the production impact test plate? Do I have to weld a 8 3/8 in. thick test plate with the FCAW process for this repair weld or can I weld a 1.5 in. thick production test plate with the FCAW process to meet the intent of...
I have two potential weld repairs.
Repair No. 1: I have welded a Category A joint with the SAW welding process. It was determined by UT that there is linear indication about 1/8 in. under the service and about 2 in. long. I was considering repairing it with FCAW, however since it is Category...
I have a 3 in. thick welded test plate and am required to perform rounded transverse weld tensile specimens in accordance with B4.0. Per customer requirements and based on the thickness, there are two sets of multiple test specimens that need to be performed at two different locations. The...
I am qualifying two production welds. Weld No. 1 is a CJP double-bevel groove meeting B-U5-GF of Fig. 2.4. Weld No. 2 is a PJP square butt weld that does not meet any of the joints in Fig. 2.5. Does the CJP groove weld qualification qualify the PJP groove weld qualification per Par. 5.9.1 or...
I am qualifying a test plate that has a variable double-V groove that has a groove depth of 1 inch on one side and 6 inches on the opposite side. Per Fig. UG-84.5 and Table UG-84.6, two set of HAZ impact specimens shall be removed from a depth of between (1/4)t to (1/2)t from each weld surface...
A welder welded a performance qualification on a 1/2 in. thick pipe, using a min. of 3 layers. The qualification did not undergo RT. Is he qualified for the max. thickness to be welded?
I know that 4130 is not Code approved. So based on your statement above I cannot apply impact testing requirements of the Code to this material, correct?
For my general knowledge, if I am qualifying two dissimilar Code approved metals that are in Table UCS-23 and impact testing is required...
I am joining 4130 to a P1, Gr. 2 carbon steel. Impact testing is required. The 4130 base metal was impact tested to meet 37/25 ft-lbs. The carbon steel was impact tested to meet 18/12 ft-lbs. Why do I have to impact test the 4130 HAZ to meet 37/25 ft-lbs. and the carbon steel HAZ to meet...
I am qualifying a welding procedure to weld a 4130 nozzle to a forged carbon steel case in production. The min. tensile requirement shall be 70 ksi and impacts shall be tested in weld metal and 4130 to MDMT of +20F. I plan on using a -20F certified FCAW and GTAW carbon steel wire and PWHT at...
I am trying to determine the number of HAZ impacts to be taken in accordance with the new edition of the Code. I typically qualify plates that are 1.5 inches thick with a partial penetration groove of 3/4 inch. Fig. UG-84.5 seems to specify CJP welds with "t" being the base metal thickness...
I am reviewing a welding procedure that was qualified using a 0.28 in. thick test plate and was welded with short-circuit GMAW for 1/8 in. and pulse GMAW for the remainder of the thickness. In the WPS, is the base metal thickness qualified restricted by QW-403.10 or is QW-451.1 required to be...
