Re: [MW:29089] Hardness for SA516 Grade 70

I fully agree Jurgen Prinsen. 

I think on our material specification, we should clearly indicate that the hardness should not be higher than 200 brinell. 

On Tuesday, February 12, 2019 at 9:16:02 AM UTC+7, Jurgen Prinsen wrote:

This 200HB is only mentioned as in delivery condition, not in as welded condition.

As welded hardness depends on chemistry and cooling rate (e.g preheat, heat-input, wall thickness)

Regards

Jurgen Prinsen IWE/MSc

Weld-Tech BV

Welding consultancy and engineering since 1988

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Van: "José Juan Jiménez Alejandro" <jjjim...@gmail.com>
Aan: material...@googlegroups.com
Verzonden: Zondag 10 februari 2019 18:09:34
Onderwerp: Re: [MW:29081] Hardness for SA516 Grade 70

I was looking for that data in the Code, I could not find it, hopefully someone has better luck and share the hardness data of this steel, with reference to the standard; On the other hand, when a pressure vessel carries the ASME stamp, the Authorized Inspector of the Authorized Inspection Agency necessarily has to intervene with your company has a contract, the Authorized Inspector has the obligation to advise and give you technical support.

El dom., 10 feb. 2019 a las 6:42, BCK 055 (<bck...@gmail.com>) escribió:

PWHT is followed spec, and WPS should be shown hardness test value.

Sent from my Blackberry

From: RKD Sent: Sunday, February 10, 2019 17:52 To: Materials & Welding Reply To: material...@googlegroups.com Subject: [MW:29073] Hardness for SA516 Grade 70

For a pressure vessel designed with stamped under ASME VIII Div.1, there is a requirement that: "Hardness values should not exceed 200 brinell for the welds / material of shell."

Shell material is specified as SA516 Grade 70.

I am concerned the requirements for hardness and material will automatically require stress relief for all pressure vessel parts.

Would SA516 Grade 70 have hardness lower than 200 Brinell?

Thank you.

Regards,

RKD

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Ing. José Juan Jiménez Alejandro

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and Technical Manager SSI-TPI

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