Re: [MW:4693] RE: 4677] Alternate Material to AISI 316Ti

Dear Prafulla,

                     I would suggest you to go with AISI 316 L, since you should consider the design data requirement for temp conditions.                     

 

316Lalso possesses excellent mechanical and corrosion properties at sub-zero temperatures.  When there is a danger of corrosion in the heat-affected zones of weldments, the low-carbon variety  316L should be used.   316 Ti, the titanium-stabilised version, is used for its resistance to sensitization during prolonged exposure in the 550^oC-800^oC temperature range.

 

Common Name

Condition

0.2% Proof Strength MPa Min

Tensile Strength MPa Min

Tensile Elongation (%min)

Hardness Brinell HB (max)

Rockwell Hardness HRB (max)

Vickers Hardness HV (max

 

S 316L	Annealed	170	485	40	40	217	95	225
S 316Ti	Annealed	205	520	40	40	217	95	225

 

 

 

is 300 Series—austenitic chromium-nickel alloys.
The austenitic grades of wrought stainless steel are designated by numbers in the 200 and 300 series. The 300 series is based upon the classic 18% chromium and 8% nickel stainless steel. Certain modifications of the composition affect the corrosion resistance, whereas other modifications of the composition are made to achieve mechanical properties.

Chemical Composition (ASTM A 240)
 

	C	Mn	P	S	Si	Cr	Ni	Mo	Ti
316 316L 316Ti	0.08 max 0.03 max 0.08 max	2.0 max	0.045 max	0.030 max	1.0 max	16.0 to 18.0	10.0 to 14.0	2.00 to 3.00	- 0.5 max 5X%C

 

 

Regards,

 

Yadav Shiva Chelliya,
Inspection Engineer,
Doha Qatar,
+974-6166465

luvshiv2002@gmail.com

On Mon, Apr 5, 2010 at 8:40 AM, Prabhu Kumar L <l.prabhukumar@saipem-india.com> wrote:

Dear Praphulla,

 

The purpose of selection for 316Ti should be used in the temperature range between 600 - 900ºC. This is called Titanimum stabilized grade. In general austenitic (300 series) stainless steels are having problem of sensitization (Chromium carbide precipitation) in the temperature range of 450 - 850ºC. To avoid this problem, stabilized grades of SS shall be selected, hence no chromium carbide precipitation will be formed instead Titanium carbide formation will take place which would not cause for sensitization problem.

 

Also note that if it is for high temperature application, the minimum % of carbon should 0.04 in order to retain fall in strength when temperature increases. This cannot be achieved in 'L' grade steels. Hence, It is suggested to use AISI 316 instead of AISI 316L in place of 316Ti. Also suggested to confirm with design engineer for this application.

 

Regards,

 

L. Prabhu kumar,

Sr. Principal Engineer,

 

Equipments & Materials Dept.,

Saipem India Projects Limited,

Nungambakkam High Road, Chennai - 600 034, India.

Tel:+91 44 43906588, Ext.: 588, Fax:+91 44 66840345,

Mobile Ph. No.: +91 9003010978.

---

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Praphulla Phirke
Sent: Saturday, April 03, 2010 8:54 PM
To: Materials & Welding
Subject: [MW:4677] Alternate Material to AISI 316Ti

 

Hi All,

Can I used AISI 316L in place of AISI 316Ti?

 

 

Thanks & Regards

Praphulla

praphulla.dp@gmail.com

 

 

 

------------------------------------------------------------------------------------------------------------------------------------------------------------------- DISCLAIMER: The information contained in this communication is intended solely for the use of the individual or  entity to whom it is addressed and others authorized to receive it. It may contain confidential or legally privileged  information. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution  or taking any action in reliance on the contents of this information is strictly prohibited and may be unlawful. If  you have received this communication in error, please notify us immediately by responding to this email and then  delete it from your system. Saipem India Projects Limited (SIPL) is neither liable for the proper and complete  transmission of the information contained in this communication nor for any delay in its receipt.  -------------------------------------------------------------------------------------------------------------------------------------------------------------------

--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding-unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.

--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding-unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.

--

--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding-unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.