Re: [MW:30771] Pickling and passivation

Please check attached Article for Pickling of Nickel alloys

Thanks & Regards

J.Gerald Jayakumar

On Wednesday, April 15, 2020, 06:23:14 PM GMT+7, 'james gerald' via Materials & Welding <materials-welding@googlegroups.com> wrote:

I suppose there are 2 types of Nickel Alloys, Solid solution strengthened and Precipitation Hardened alloys.

Inconel 601 falls under Solid solution strengthened and supplied in  Solution Annealed Heat Treated condition.

ASTM A 380 is pickling and passivation standard for stainless steel.

it is better to contact the Manufacturer regarding Pickling and passivation to remove corrosion deposits.

Thanks & Regards

J.Gerald Jayakumar

On Wednesday, April 15, 2020, 05:57:26 PM GMT+7, harenath jha <harenathjha@gmail.com> wrote:

Again... Please what is the as shipped condition... If it is not heat treated then u can not do passivation. If it is heat treated then passivation can be done Please refer astm a 380 for more details...  Still you are in doubt please let me know..

On Wed, Apr 15, 2020, 12:56 Chiranjeevi A <chiranjeevipuvvula@gmail.com> wrote:

Dear Harenath,

       Due to improper storage, the thermowell of Inconel 601 got corroded. For these items can we do pickling and passivation? 

On Wed, Apr 15, 2020 at 7:28 AM harenath jha <harenathjha@gmail.com> wrote:

What is the conditions of material.

Is it heat treated normalised or something else.

On Wed, Apr 15, 2020, 10:31 Chiranjeevi A <chiranjeevipuvvula@gmail.com> wrote:

Dear all,

  Can any one suggest the specification or standard procedure s to be followed for pickling and passivation of inconel pipes and flange surfaces

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