Why not?
E7018 is a QW-432 F4 electrode and E8018-B8 {E(X)XXX18-X in Sc IX notation} is also an F4 electrode
Likewise, ER70S-6 is an F6 and ER80S-B8 is an F6 filler metal.
Base metals are addressed in QW423.1.
Weldor is permitted to do the welding provide there is an appropriately qualified WPS for him/her to work to.
John A. Henning
Welding & Materials
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of ROHIT CHAWRE
Sent: Wednesday, September 12, 2012 1:00 PM
To: materials-welding@googlegroups.com
Subject: RE: [MW:15288] Welder Qualification Range for CS to alloy with same dia and thickness?
dear sir,
as per my knowledge, welder is not permit to weld ER80SB8 & e8018B8, and is not qualified as per F.no. and is qualified as per material, welder can weld to lower and equal to material as he qualified and higher.
thanks n regards
rohit chawre
Date: Wed, 12 Sep 2012 15:41:36 +0300
Subject: [MW:15280] Welder Qualification Range for CS to alloy with same dia and thickness?
From: biplab.mech@googlemail.com
To: materials-welding@googlegroups.com
Dear Experts,
1 welder is qualified with ASTM A 106 Gr. B with ER70S-6 (Root & 2nd Pass) & E7018(Fill & Cap) with a diameter range of 2 7/8 and above
If thickness and dia of pipe remain same, can he weld on ASTM A 335 Gr. P-9 with ER80s B8 & E 8018 B8.
Construction Code Sec-IX, 2010.
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Thanks & Regards
Biplab Pal
Mechanical Inspector (PMT)
E-mail: biplab.mech@gmail.com
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