Materials & Welding: RE: [MW:32881] Ferritic Steel

Thursday, February 17, 2022

RE: [MW:32881] Ferritic Steel

All Carbon & Low Alloy Steels are Ferritic Steels. They can harden subject to the heat treatment and cooling rate. However, the term "Hardening" does not apply for BPV equipment & piping as the steels used for these components are fairly low carbon and well manufactured with a lot of quality norms. Hardening is more pronounced for steels with higher C Content, typically > 0.30 %.

Ferritic Stainless steels are not amenable to hardening following heat treatment. They only can be annealed. Read these articles for general introduction: 3.7.2 Heat Treating Stainless Steel | Forging Industry Association.

An overview of austenitic and ferritic stainless steels (thefabricator.com).

Thanks.

Pradip Goswami.P.Eng, IWE.

Independent Welding & Metallurgical Engineering Specialist

Consultant: SNC Lavalin Inc. (Nuclear &Non-Nuclear)

Saudi Aramco Approved Designated Project Welding Engineer (DPWR)

Qatar Petroleum Approved, SME-Materials & Corrosion Engineering.

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From: materials-welding@googlegroups.com <materials-welding@googlegroups.com> On Behalf Of Jenish Mistry
Sent: February 16, 2022 5:35 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:32875] Ferritic Steel

Dear sir,

Why it cannot hardened by heat treatment?

By which process it can hardened ??

On Wed, Feb 16, 2022 at 1:00 PM Kannayeram Gnanapandithan <kgpandithan@gmail.com> wrote:

Less Carbon, High Chrome and some small addition of alloying elements Nb, Ni etc.
U cannot hardened by heat treatment

THANKS & BEST REGARDS,
KG.PANDITHAN, BE, IWE, CSWIP 3.1,
ISO 9712 Level 2 in VT,
ASNT-Level II in PT,MT,RT & UT,
LA ISO 9001-2015,
International Welding Engineer.
CONSULTANT-WELDING & QUALITY
Mobile no: +919940739349

On Wed, Feb 16, 2022 at 8:52 AM SN <suryawanshinileshj@gmail.com> wrote:
Dear all,

What is the exact definition of ferritic steel as per ASME or ASTM or EN standard.

Kindly clarify

Regards
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