impact test of A106 Gr B
impact test of A106 Gr B
(OP)
i am using A106 Gr B pipe of 16" sch 160 & MDMT is - 20 deg C.
Not sure impact test is required per 31.3 code.
If yes then shall i chose a Weld procedure where HAZ & weld are impact tested to atleast MDMT?
Again for above my base metal thickness limit will be T/2 to T+6 mm & not as per
QW 403.6 of SEC IX?
Not sure impact test is required per 31.3 code.
If yes then shall i chose a Weld procedure where HAZ & weld are impact tested to atleast MDMT?
Again for above my base metal thickness limit will be T/2 to T+6 mm & not as per
QW 403.6 of SEC IX?





RE: impact test of A106 Gr B
If you do qualify a 'cold' WPS, try using -40°C. It is easy to get charpys to pass, and there are few places on the planet that ever get colder than this.
RE: impact test of A106 Gr B
Only up to 12.5 mm nominal thickness. A106 is a curve B material in Figure 323.2.2A.
If only it were that simple. A106 is not a steel design for low temperature and it would be more a case of 'you would be fortunate to get Charpys to pass'.
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
RE: impact test of A106 Gr B
That means impact is really required. What about base metal thickness limit as now impact is required?
RE: impact test of A106 Gr B
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
RE: impact test of A106 Gr B
But i am more keen on limit of base metal thickness for weld procedure .Will it be as per QW 403.6 of Sec IX or T/2 to T+6 mm of 31.3 as i see i will have to weld fairly large cupon for qualifìcation.
RE: impact test of A106 Gr B