RE: [MW:31194] Re: Annealing and Normalizing temperature for F316 & SS410

Hello SURESH,

 

The observations of P. Goswami and Ramin Kondori are correct. For steel as hard as Type 410 SS, reaching a BHN 160 hardness is uphill. It would be a soft steel and it is achieved with an annealing that takes a long time, more than a day.

You have to rely on a specialist, who will assist you at the steelworks or the local supplier to supply you with this steel of hardness 160 BHN.

Attached the isothermal curve for this steel, the F + C zone would correspond to an annealed material, achievable at approximately 700 C and time will be defined by the steelmaker.

 

Ramon Briceno,

Metallurgical Engineer / Oil & Gas.

 

 

Sent from Mail for Windows 10

 

From: SURESH
Sent: Saturday, July 25, 2020 10:35 AM
To: Materials & Welding
Subject: Re: [MW:31191] Re: Annealing and Normalizing temperature for F316 & SS410

 

Hi My question is what is the suggested annealing temperature for .ASTM A473 Typ410 grade. If your refer the standard of  ASTM A473, Table 2 they have given condition like A,1,2,3.

 

So if it is annealed condition what is the suggested temperature to achieve 223BHN?

 

 

Note: Refer attachment

 

Regards

Suresh

On Saturday, 25 July 2020 at 09:24:17 UTC+5:30 ramink...@gmail.com wrote:

If this is the TDC for raw material as per contract, then you have to find a supplier who can provide it unless you can prove that it would cause problems during fabrication or operation. And that is why I told you to provide us with more details. 

Then you need a qualified engineer who reviews all the documents and is able to get into a discussion with your client to find out whether other alternatives are acceptable or not. I do not think you can do it via online inquiries; you need to hire someone to do this for you... 

 

Ramin  Kondori

Sr. QA/QC & Welding Engineer

-----------------------------------------------------------

PG-Dip. in Welding Engineering (IWE  AT  0070)

BSc. in Civil Engineering (IUT)

BGAS Painting Inspector

ASNT Level I&II

                        

 

 

On Fri, Jul 24, 2020 at 7:45 AM <sathis...@gmail.com> wrote:

Dear Mr.Ramin Kadori.

My customer is given TDC for annealing at 955 C but raw material supplier is suggesting that they do only with 850 C. Its not for fabrication, to give raw material into finished component by machining. Required hardness is 160 BHN

As per ASTM A473, Grade/Typ. 410 can be supplied as per the following conditions:




Condition A refers to annealing. (ASTM A473 mentioned with A, 1,2,3,). In this case how to determine the Annealing temperature?


My requirement is to get hardness of 160BHN

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