I have read A536 numerous times and this morning I set down and read it again and I may have found my answer.
4.1 states that "the iron represented by the test specimens shall conform to the requirements as to tensile properties presented in tables 1 and 2".
What do you guys think?
I understand that materials can have different properties due to variations in their thermal treatments. The issue is that A536 classifies materials based on their mechanical properties, it allows for cast on samples or seperately cast samples but the same property values apply to both samples...
I have a question regarding the mechanical testing results for A536 70-50-05 material. I have a supplier who does both seperate and cast on samples however their acceptance criteria for cast on samples is significantly lower than what A536 specifies for 70-50-05. Where A536 calls for a tensile...
I think that you will find that ASME does not establish an acceptance criteria for NDE results that are not mandated by code, it is a matter of agreement between the owner and fabricator.
REGRUMBLE,
I do not think the backing would be an issue as it is not an essential variable for Procedure Qualification of SMAW. It would however be an essential variable for the Welder Performance Qualification and should be concidered when writing the WPS and qualifying the welders. I may be...
I guess one could argue that they are mechanical marks and that it is not a workmanlike finish as described in para. 18 of A106 but you may not get very far with it.
31.3 says APPROX. 1.5mm gap PRIOR to welding. The gap after welding can vary depending on many variables. Welding process, how many tacks were used, size of the weld ect. When socket weld RT is required by our clients I have them specify the acceptance criteria since the code only addresses it...
So how would you explain the tempering? It seems to me like there had to be another heat treatment performed on this material to temper the martensite since martensite would not form until it was below the tempering temperature for the material.
Can someone help me understand where the tempering of the martensite would occur. If it was bent at 1050C and water quenched this would be essentially a normalizing treatment. The material should have fully austenized at that temperature and formed fresh untempered martensite upon cooling correct?
Metengr,
Thanks for the clarification. It has been about 10 years since I have had to deal with Section VIII. After re-reading it I think you are correct.
To clarify the question gr2vessels, a Section VIII vessel is delivered to the jobsite and installed by the onsite contractor who is not...
I would say the PQR will support a WPS that will permit welding of this joint.
The welder would need to qualify on a test coupon at least 7.5mm thick with an O.D. less than 2 7/8". This would allow the welder to deposit 15mm of weld and the welder would be qualified for materials down to 1" O.D.
Per section VIII Div 1 the first circumfrential joint falls under section VIII's juristiction. Is there any documentation required from the installer that makes the tie in welds similar to the U-1? Would making these welds be considered field assembly and need to be documented on the applicable...
When I have used the telebrineller with the correct bar I can get results that are consistent with my results with a Mic 10 and Mic 20. The problem is that I no longer perform testing or I would do some comparitive testing to answer my question. My problem is that I have a wide acceptance range...
