RE: 428] SA-515 Gr.60 AND SA-516 Gr.60

[Bathula Raghuram (Mumbai - PIPING)]

SA515 is intended for moderate to high temperature, in that case please check and compare stress values at elevated temperatures for SA515 Vs SA387, I think for optimum thickness (and more economical) designers generally prefer SA387. This is my guess

 

Members more views invited!

 

Best regards

Raghuram Bathula

---

From: material...@googlegroups.com [mailto:material...@googlegroups.com] On Behalf Of Wagh Nilesh (Mumbai - Stequ)
Sent: Monday, December 17, 2007 10:39 AM
To: material...@googlegroups.com
Subject: [MW:428] SA-515 Gr.60 AND SA-516 Gr.60

 

Dear Members

 

This may be preliminary but I wish to why specifically in India manufactures always go for SA-516 Gr.60 and not SA-515 Gr.60? Though Tensile strength of SA-515  Gr.60 (60-80 ksi) is more than SA-516 Gr.60 (55-75 ksi). Please let me know experts replies.

 

BEST REGARDS

NILESH WAGH
EDTICB-MUMBAI
STATIC-EQUIPMENT DEPT
PHONE:-+91 22 6704 8408

 

[pjo...@technip.com]

to my understanding, the following may be the explanation to the original
query.

SA 515 is intended for moderate or high temperature applications like
boilers or low pressure steam applications. Its metallurgy(mate/heat
treatment) is such that they are good in creep resistance at higher
temperature.

This differentiation is not considered in ASME sec. VIII while Sec. I
allows the use of A515 material upto 1000 F (~530 C) while use of A516 is
restricted to 850 F (450 C). Normally, CS is not used for very high
temperature applications (beyond 350 C) as there is a drastic reduction in
allowable stress. Thus, the advantage of A515 over A516 is neutralized.
Instead, there is an increased tendency to use A387 (Cr-Mo steel)

Best regards,

Prasad Joshi
e-mail: pjo...@technip.com
Phone: +971-(0)2-611-6643

"Bathula Raghuram
\(Mumbai -
PIPING\)" To
<R.Bathula@ticb.c <material...@googlegroups.com
om> >
Sent by: cc
materials-welding
@googlegroups.com Subject
[MW:430] RE: 428] SA-515 Gr.60 AND
SA-516 Gr.60
17/12/07 01:08 PM


Please respond to
materials-welding
@googlegroups.com

SA515 is intended for moderate to high temperature, in that case please
check and compare stress values at elevated temperatures for SA515 Vs
SA387, I think for optimum thickness (and more economical) designers
generally prefer SA387. This is my guess

Members more views invited!

Best regards
Raghuram Bathula

From: material...@googlegroups.com

[mailto:material...@googlegroups.com] On Behalf Of Wagh Nilesh
(Mumbai - Stequ)
Sent: Monday, December 17, 2007 10:39 AM
To: material...@googlegroups.com
Subject: [MW:428] SA-515 Gr.60 AND SA-516 Gr.60

Dear Members

This may be preliminary but I wish to why specifically in India
manufactures always go for SA-516 Gr.60 and not SA-515 Gr.60? Though
Tensile strength of SA-515 Gr.60 (60-80 ksi) is more than SA-516 Gr.60
(55-75 ksi). Please let me know experts replies.

BEST REGARDS
NILESH WAGH
EDTICB-MUMBAI
STATIC-EQUIPMENT DEPT
PHONE:-+91 22 6704 8408

Save a tree...please don't print this e-mail unless you really need to.

Save a tree...please don't print this e-mail unless you really need to.