Corten & carbon Steel weldability

[Zakaria ghrab]

Hi all,

  I need to know the P number of corten steels, i have on PQR according ASME sect IX corten to corten, i need to use it to prepare WPS for Carbon steels but i have doute Corten is PN°1 or PN°3, serashing in internet : Equivalent Corten is ASTM SA 242, is it true?
--
GHRAB Zakaria

[John Henning]

Please see the following for a brief discussion of weathering steels and United States Steel (USS) trademark CorTen:  http://en.wikipedia.org/wiki/Weathering_steel

 

A 588 Types A,a ; A,b ; A,c ; B,a ; B,b, B,c   are all classified as P-No. 3 Group No. 1 in QW/QB-422 (ASME Section IX, 2010 edition)

 

Neither A242 nor A606 are listed.

 

I have seen the weathering grade steels used for duct work and pipe hangers.  Since they are not listed as SA materials you can be certain that they are not approved for pressure boundary service.

 

Hope this helps you on your way.

 

John

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[Pradeep Sawant]

Dear,

P no 1 and equivalent SA 242 for welding choose SFA 5.29 W cu content wire In FCAW.(E81T1W2)

Regards
Pradeep

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From: Zakaria ghrab <zakari...@gmail.com>
To: material...@googlegroups.com
Sent: Thu, 17 February, 2011 9:14:27 PM

Subject: [MW:9916] Corten & carbon Steel weldability

[muthusrinivasan muthuselvam]

Dear Mr.Zakaria..

 

Corten is unspecified material as per ASME... you can say that as unassigned and preferred electrode is E 7018 W -made to order.

 

I hope this is for chimney or some container..

 

br,

 

msms

--

[Zakaria ghrab]

Hi,

   My request is : May Corten PQR qualify Carbon steels WPS and how we can approuv it from ASME IX ?

Regards

2011/2/18 muthusrinivasan muthuselvam <msm...@gmail.com>

--
GHRAB Zakaria

[John Henning]

There is no SA-242 –The S indicates that the material is included in ASME Section II and has ASME Code allowable stresses in Sc II Part D.  ASTM A-242 is not included in QW-422 and therefore is an “Unassigned Metal” per ASME Section IX (See QW-424) and does not have a P-No.  Because it is unassigned all welds must be separately qualified:  i.e. unassigned to unassigned, unassigned to P-No 1, unassigned to P-No 2, etc.

[John Henning]

See below

 

From: material...@googlegroups.com [mailto:material...@googlegroups.com] On Behalf Of Zakaria ghrab
Sent: Friday, February 18, 2011 4:14 AM
To: material...@googlegroups.com
Cc: muthusrinivasan muthuselvam
Subject: Re: [MW:9925] Corten & carbon Steel weldability

 

Hi,

   My request is : May Corten PQR qualify Carbon steels WPS NO and how we can approuv it from ASME IX ? See Sc IX, QW-424,  and previous post.

Regards

[adw...@gmail.com]

Dear mr. zakaria,

As already explain by mr. Muthu corten is unspecified material by asme thuswps/ pqr qualified for corten shall only be used to weld corten mtrl. U can't mixed with carbon steel since it is fall under p1 thus u need to qualify a new wps for ur c steel. Please correct me if I'm wrong.

Brgds
AW

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From: Zakaria ghrab <zakari...@gmail.com>

Sender: material...@googlegroups.com

Date: Fri, 18 Feb 2011 10:13:30 +0000

To: <material...@googlegroups.com>

ReplyTo: material...@googlegroups.com

Cc: muthusrinivasan muthuselvam<msm...@gmail.com>

Subject: Re: [MW:9925] Corten & carbon Steel weldability

[k.ilangkumaran ilangkumaran]

Dear MSMS,                  E7018 W? How? could you please explain us? because the material is unassigned as mentioned so we dont know what chemical composition and tensile strength is? some standards para if possible please?   Ilan --- On Fri, 2/18/11, muthusrinivasan muthuselvam <msm...@gmail.com> wrote:

[César Alexis Viteri Pérez]

MSMS,
 
NO, you cannot use it for qualifying any other wps, due to Corten is not listed in Sec II therefore you cannot use mechanical/metallurgical properties grouping criteria. 
 
Regards

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Subject: RE: [MW:9929] Corten & carbon Steel weldability
Date: Fri, 18 Feb 2011 09:29:27 -0600
From: jhen...@deltak.com
To: material...@googlegroups.com

[muthusrinivasan muthuselvam]

Carton steel is microalloyed carbon steel material mainly used for weathering action.. basically this material is developed for special application... in India equvalent material is IRSM 41-- If you check the chemistry and mechanical in internet you will get it..

[pgoswami]

Mr. Zakaria,

 

Attached are some information on Corten Steel/Weathering Steel which would be of help to you. This steel is a micro alloyed, typically added with Copper (major) and other alloying elements, such as Nickel to improve atmospheric corrosion resistance.

 

ASTM A-588 is one of the specifications which cover such (weathering) steel. See the attached data sheets for  further references.

 

Corten is quite weldable, with the required precautions to be adopted as per manufacturers guidelines.

 

AWS SFA 5.5 covers the required specs for welding electrodes,recommended electrodes are E-7018W for Corten A, E-8018W for Corten-B steel.See the atatched data sheet of a popular electrode manufacturer in North America, Air Liquide.

 

ASME Sec-IX  includes weathering steel, under specification A-588. These steels have S-Nos but do not have any P No.Welding procedure qualification on these ASTM specification specific. PQR  qualified for  these steels apply for welding these grades or to others. It's advisable to use welding electrodes matching the Corten chemistry for welding dissimilar materials.

 

What's  grade or specification of corten to be fabricated. If you specify more details , perhaps may get more appropriate guidelines.

 

Thanks.

 

 

Pradip Goswami,P.Eng.IWE

Welding & Metallurgical Specialist & Consultant

Ontario,Canada.

Email-pgoswami@sympatico.ca,

pgos...@quickclic.net

 

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From: material...@googlegroups.com [mailto:material...@googlegroups.com] On Behalf Of muthusrinivasan muthuselvam
Sent: Thursday, February 24, 2011 1:30 AM
To: material...@googlegroups.com
Subject: Re: [MW:10007] Corten & carbon Steel weldability