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

410 is a martensitic material which is used for its corrosion resistance, relatively high tensile and hardness properties (due to its martensitic structure).

The 950C annealing temperature refers to the temperature before hardening which means it will be hardened after annealing to hardness ranges between 200-250 (acc to 410 specifications). Of course, higher hardness values are possible but I do not think you can bring it down to 160HB.

Maybe they mean annealing at 950 C then tempering the steel in order to lower the hardness which again, I do not think you can achieve 160HB but do not take my word for it. Maybe you can find 410 steel with 160HB somewhere.

Then it comes the machining requirement. 

As far as I know, 416 is the free machining grade in this group.

Maybe this is what they are looking for...

I guess your client is confused and you need to tell them to revise their technical requirements in this case.

Regards

Ramin  Kondori

Sr. QA/QC & Welding Engineer

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

BSc. in Civil Engineering (IUT)

BGAS Painting Inspector

ASNT Level I&II

                        

On Sat, Jul 25, 2020 at 7:27 PM <pgoswami@rogers.com> wrote:

Hello Suresh,

 

Please see the referenced standard and  important clauses as highlighted. You may read those and use your discretion to find solutions to your problem. If the problem is specific, then as suggested by Ramin Kondori, engaging a metallurgical specialist to find the correct solutions would be worthwhile and time saving for you organization.

Thanks.

 

P.Goswami.P.Eng, IWE.

Independent  & Consulting Welding & Metallurgical Specialist

Aramco Approved Designated Project Welding Engineer(DPWR)

Linkedin: https://www.linkedin.com/in/pradip-goswami-2999855/

Email:pgoswami@rogers.com,pradip.goswami@gmail.com

Cell/Whasapp:1-905-9793232

 

From: materials-welding@googlegroups.com <materials-welding@googlegroups.com> On Behalf Of SURESH
Sent: July 25, 2020 1:58 AM
To: Materials & Welding <materials-welding@googlegroups.com>
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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