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Wednesday, August 4, 2010

Re: [MW:6303] API 1104 CODE ISSUE

Dear Limesh,
 
What is specification of 4130.  As per ASTM A 519 there are 4 grades of 4130.  Their yield strengths are for Hot rolled condition is 70 KSI, Stress releived condition is 85 ksi, Annealed condition 55 and Normalised condition 60KSI.  As per YS group of 1104 if YS less than equal to 65 KSI are under group 3.  So the welding between X 65 to 4130 can be used for X 60 to 4130 but not vice versa.    You can use E 8018 G /   ER 80SG / can be used for welding. 
 
Regards
 
N.V. PRASAD

On Wed, Aug 4, 2010 at 8:50 AM, Shashank Vagal <nach_sam@yahoo.com> wrote:
Qualifying for higher grade will be the best choice.

--- On Tue, 3/8/10, limesh M <limesh78@gmail.com> wrote:

From: limesh M <limesh78@gmail.com>
Subject: [MW:6291] API 1104 CODE ISSUE
To: "Materials & Welding" <materials-welding@googlegroups.com>
Date: Tuesday, 3 August, 2010, 6:36 PM


Dear All,

I need to qualify a welding procedure to API 1104, welding X60 pipe to
Gr. 4130 material. I would like to know if I can do this using a pipe
coupon that is "dual certified X60/X65", or would that pipe only be
usable to qualify an X65 procedure?What consumable I have to use in
this case?

Thanks and Regards


Limesh

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