An annealing of solubilized between 1050 to 1150 C to rearrange chromium carbides in the structure, affected for example by a welding process, is valid.
Ramon Briceno
Metallurgical Engineer / Oil & Gas
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SURESH,
Yes, SS410 steel can be purchased, in annealed condition, or in a tempering condition with prior normalization, as stated in ASTM A479, point 4.4.1. But the question is what are you going to do with the steel, are you going to weld it, machine it, or use it directly in its state of supply (annealed)?
If you are going to use it in a welding condition, since the annealing structure is lost, instead hard hardening structures such as martensite are formed. Then a tempering must be done to preserve the best hardness and toughness properties and that the piece does not suffer from hydrogen-induced cold cracking.
Ramon Briceno,
Metallurgical Engineer- OIL&GAS.
From: SURESH
Sent: Thursday, July 23, 2020 1:02 AM
To: Materials & Welding
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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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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:pgos...@rogers.com,pradip....@gmail.com
Cell/Whasapp:1-905-9793232
From: material...@googlegroups.com <material...@googlegroups.com> On Behalf Of SURESH
Sent: July 25, 2020 1:58 AM
To: Materials & Welding <material...@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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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.
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--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
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Thanks and Regards,
S.SATHISH KUMAR
Packings & Jointings Gaskets Private Limited
No:347, North Phase,3rd Street ,SIDCO Industrial Estate,
Chennai 600098,
India
Tel: +91-44-48627746
Mob : 9841788979
Email : qms....@gmail.com
Website www.ringgaskets.co.in
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