Titanium to carbon steel welding

[vijay]

Dear Friends,

There is a requirement mentioned in our client spec about Titanium to Carbon steel welding(Attached picture have more details).

I searched for literatures on this and I found that by normal fusion welding process is not recommended.

1. Is there any way,welding can be done between Titanium and carbon steel?

2. If YES or NO(on both case), please send a evidence document to confirm(like ASME,ASTM).

This is very urgent requirement.

Thanks in advance

Regards,

Vijay

[T. Rizal H.]

Dear Vijay,

1. No other way for pressure vessel. you may designed short saddle made by titanium then extended by C.S support. connection by bolting.

2. -

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Regards,

T. Rizal Hidayat

[Shaunak Upadhyay]

Dear Vijay,

There is no any consumable or process to join titanium to carbon steel welding.

Please give your joint details and materials specification for other details.

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Regards,
Shaunak Upadhyay,

[Prakash Hegde]

Dear Vijay

 

Ti To  Cs welding is not compatable

Generally  Ti lining (sheet ) is being screwed with CS, You  can refer AWS welding Hand book Vol 4 for the joint configuration Which will  clear your doubts

Regards

 

Hegde P.B.

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From: vijay <vijaya...@gmail.com>
To: weldi...@googlegroups.com; material...@googlegroups.com
Sent: Tue, 12 April, 2011 6:09:13 AM
Subject: [MW:10646] Titanium to carbon steel welding

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[Pieper QSI]

Dear Vijay,

 

Why full titanium plate is used for shell. Often explosive cladded carbon steel is used. In such case you will have an Titanium liner inside and the outside is Carbon Steel so will not have any problems to connect any saddles and or other attachements.

 

Met vriendelijke groeten / Best Regards

 

Herman Pieper

 

Pieper Quality Support & Inspection

Phone: +31 (0)521 380083

Fax:     +31 (0)84 7539225

Cell:     +31 (0)6 51691215

www.pieper-qsi.nl

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[kannayeram gnanapandithan]

as Mr Pieper said, this can only be welded by cladding. in some cases where size is huge , there will be linning with titanium srews fixed with carbon steel and fused with titanium, this type is rarely used

[vijay]

Dear  Schreedhar/ Rizal/ Shaunak Upadhyay / Prakash Hegde,

Thanks for your valuable suggestions.

The saddle length is 200mm only, and I have suggested to use Titanium for the saddle to avoid dissimilar welding.

I think this will be the better decision to avoid carbonsteel to titanium welding problem.

Thanks and Regards,

Vijay

,

[Prakash Hegde]

You have to bearin mind the cost of Ti which is very very costly

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From: vijay <vijaya...@gmail.com>
To: material...@googlegroups.com; weldi...@googlegroups.com
Sent: Thu, 14 April, 2011 5:25:58 AM
Subject: Re: [MW:10669] Titanium to carbon steel welding

[Norton, Seth J]

Titanium and steel form brittle intermetallics and can not be joined by standard fusion welding processes. The only welding process I am aware of for joining steel and titanium is explosion cladding.

 

Seth Norton

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[pgoswami]

Hello Vijay,

 

It's not very clear from the details posted, what's the thickness of the shell. For a heat exchanger involving corrosive fluid typically the wetted surface would be of Titanium.From that aspect Titanium clad carbon or low alloy steel looks to be the ideal cost effective material. However if the clients' choice is pure titanium then one has little choice. However the welding difficulties involved in for Titanium clad steels are lot less than solid titanium.

 

Under the present scenario, since the shell would be of pure titanium I would think the following could be the options for saddles:-

1. Get the entire saddles fabricated from Titanium(as proposed by you).In reality one does not need Titanium saddles, but the design would drive towards the same and this would add up to the cost.
2. or
3. Get the saddles fabricated from Ti Clad steels-preferably explosion or roll bonded plates.

Titanium can not be arc welded to Carbon steel due to formation of brittle intermetallic phases.

 

The attached articles would help to provide you some guidance on the welding problems of Ti and Tiitanium Clad steels.

 

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 Norton, Seth J
Sent: Thursday, April 14, 2011 9:52 AM
To: material...@googlegroups.com
Subject: RE: [MW:10676] Titanium to carbon steel welding