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RE: 26717] Re: SA 516 Gr70 + SS 410S roll bonded clad plate

By Materials & Welding

Hi Prem,

 

I could not convey the right response to your query posted In the WhatsApp forum.

 

1.       Clad Plates are most commonly manufactured by roll-bonding for conventional alloys like martensitic stainless , austenitic stainless steel clad plates.

2.       Due to the manufacturing technique the dilution of clad by the substrate (i.e. here C.S) are minimal

3.       Hence issue of undiluted chemistry on the clad plates (as received from the mill) is never a concern.

 

This issue may be a concern during clad restoration of L& C-Seams. A judicious selection of welding techniques +No of passes would definitely assure the above. API RP-582 recommends this technique(as below) for clad restoration of 410/410S.

 

The other alternative would be ,

1.       barrier layer(start typically 1 -2mm below the interface) by 309L, 1/8" dia

2.       2nd & 3rd layer , by  AWS E410-16, 1/8" dia

3.       4TH  layer, optional , by  AWS E410-16, 1/8"(3.15 mm) or 5/32"(4.0 mm) dia.

 

Hope this would help.

 

Thanks.

 

 

P.Goswami.P.Eng, IWE.

Welding & Metallurgical Specialist

 

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of MW
Sent: August 14, 2017 10:53 PM
To: Materials & Welding <materials-welding@googlegroups.com>
Subject: [MW:26717] Re: SA 516 Gr70 + SS 410S roll bonded clad plate

 

what is your clad thickness?

On Tuesday, 15 August 2017 06:51:37 UTC+4, PREM SHANKARDUTT NAUTIYAL wrote:

Dear Friends

A column is going to be fabricated as per ASME Sec VIII Div.1

The shell plate material is SA 516Gr.70 (14mm thk) + SS 410S (3.5 mm thk) Roll Bonded clad plate.

Client spec. mentions undiluted chemistry of SS 410S at height of 3mm for the roll bonded clad plate.

My doubt is whether plate manufacturer can achieve this stringent requirement ?

PREM S NAUTIYAL
CELL : 9769316004

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