Chemical Composition of SA-106 Grade B
Chemical Composition of SA-106 Grade B
(OP)
We sent the pipe SA-106B for chemical analysis. Report shows no chrome, copper, moly, nickel and vandium altogether that means these elements are not present altogether.
SA-106 specification gives maximum permitted values of these elements per Table 1 of SA-106, now in our case minimum valuves are zero, can zero values be accepted against the maximum permitted in the specifications?
For example, per table 1 chrome should not exceed 0.4% in our case chrome is 0%, can 0% be accepted? can we say pipe is still in compliance with SA-106B?
Thanks in advance.
SA-106 specification gives maximum permitted values of these elements per Table 1 of SA-106, now in our case minimum valuves are zero, can zero values be accepted against the maximum permitted in the specifications?
For example, per table 1 chrome should not exceed 0.4% in our case chrome is 0%, can 0% be accepted? can we say pipe is still in compliance with SA-106B?
Thanks in advance.
Nasir
Welding Engineer
DESCON ENGINEERING LIMITED
PAKISTAN





RE: Chemical Composition of SA-106 Grade B
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
RE: Chemical Composition of SA-106 Grade B
Chemical analysis shows only carbon, maganese, Phosphorous, sulfur, and silicon.
Chrome, nickel, copper, moly, vandium are not mentioned altogether.
Even now, material is in compliance with SA-106 specifications for grade B?
Nasir
Welding Engineer
DESCON ENGINEERING LIMITED
PAKISTAN
RE: Chemical Composition of SA-106 Grade B
Having no stated values for the above elements suggests they were not reported, meaning they cannot be assumed to be 0% by mass. My guess is that the above elements were detected in small quantity, but were not reported. When a chemcial analysis is performed some lab provide minimum reporting results unless one stipulates x number of elements.
At this point, I would contact the lab and inquire as to the missing elements before I would accept the product.