Re: [MW:27653] Pickling and passivation of 17-4Ph Stainless steel

What's that?Can you explain pls.Is it environment friendly?

On Sat 7 Apr, 2018, 2:01 PM Kannayeram Gnanapandithan, <kgpandithan@gmail.com> wrote:

go for glass bead blasting

THANKS & BEST REGARDS,

KG.PANDITHAN, BE, IWE,  AWS-CWI, CSWIP 3.1,

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

On Sat, Apr 7, 2018 at 11:37 AM, Hrushikesh Sangamnerkar <hrushi612@gmail.com> wrote:

I don't have the ITP.

Customer says that after heat treatment, scale formations needs to be removed. Pickling passivation if done then wch chemical reagents to be used as for this material issue is that the scales doesn't get removed after pickling passivation.

On Sat, Apr 7, 2018, 09:27 C.Muni <cmkfc07@gmail.com> wrote:

It's possible to do acid pickling n passivation.Can you give details about construction code and approved ITP pls

On Sat 7 Apr, 2018, 8:40 AM Hrushikesh Sangamnerkar, <hrushi612@gmail.com> wrote:

Dear experts,

My query is:

I have weldments joining SS 304L # 17-4PH material. The weldments are subjected to heat treatment.

My customer is of the view that 17-4PH cannot be subjected to pickling and passivation after heat treatment. 

Can anyone provide technical literature as to why SS 17-4PH grade can't be subjected to pickling and passivation?

Thank you.

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