Electrical silicon steel

[chti]

Hi,

I don't find a standard which defines the chemical analysis for the steel M400-50A according to EN10106
(equivalent to ref ASTM A 677 Grade 47F240).
I would like to know the content of carbon , silicon and other elements.
Thank you for your help.

 

[metengr]

chti;

I don't find a standard which defines the chemical analysis for the steel M400-50A according to EN10106
(equivalent to ref ASTM A 677 Grade 47F240).

Yes, that is correct. I have ASTM A 677 and after reviewing it there is no specific requirement for chemical analysis to be reported UNLESS the producer is required to provide it based on the Purchaser's requirement (negotiated).

I would like to know the content of carbon , silicon and other elements.

There is this basic information in ASTM A 677

Description under Manufacture....
C</= 0.20 percent by mass
Si - added by Producer to achieve maximum core loss properties

S </= 0.015 percent by mass
Mn - range fo 0.10 to 0.40 percent by mass

 

[metengr]

S </= 0.015 percent by mass

Should be 0.025 not 0.015

 

[arunmrao]

It is normal to find Silicon content ranging from 3% to 6.5% in transformer steels.

 

[EdStainless]

Look in the info from MMPA (magnetic materials producer association). They used to have a set of good standards.

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