16Mo3 group numer in EN standard

[Eray Abaci]

Hi friends,
Can anybody tell what is the group number of EN10028-2 16Mo3 material according to EN. I m going to prepare PQR and WQT according to EN287 standard, for to qualify that material but we have conflict with client about group number of material.
Thank you in advance

[limesh M]

Dear,

 

I think it is comes under  group 1 and subgroup 1.2 as per CR ISO 15608.

 

Material - 1.5415

Standard - EN10028-2

Steel group - Flat products made of steels for pressure purpose.Non alloy steel with specific elevated temperature properties.

 

 

Regards,

 

Limesh

 

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[pgoswami]

 

Hi Eray,

 

DIN 16Mo3/15Mo3:  basic composition is C -0.5Mo.ASME Sec-IX classifies this material as P3 Gr-1.

 

As per EN-287, and EN-13480-2(see attached) this steel is classified under group.1.1.

 

Hope this replies to your query.

 

Thanks

 

 

Pradip Goswami,P.Eng.

Welding & Metallurgical Engineer/Specialist

Email-p...@sympatico.ca,

pgos...@quickclic.net

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[hpi001]

Dear Mr. Eray Abaci

According to CEN ISO/TR 20172:2004 (Grouping systems for materials -
European Materials) which is the Technical Recommendation for group
numbers it is Group 1.1 instead of 1.2 as mentioned by Mr. Limesh. If
you take a look at the EN 15608 group 1.2 you can see thiss is for
materials having a minimum specified yield strength of >275 - 360 MPa.
The material 16Mo3 has a minimum specified yield strength of 275 MPa
(applies only for thickness's up to 16 mm, larger thickness's have a
lower minimum specified yield strength) and therefore is the highest
material in Group 1.1

Best Regards,

Herman Pieper