S700MC (Alform 700M)

[falco]

Hi Everyone,

Perhaps somebody can be of assistance. I'm evaluating if a WPS can be used for a specific procedure. In our country we normally use AWS and ASME, I have no Equivalencies for S700MC to an ASTM or AISI, I found on a web site that it might be equivalent to A514 but it doesn't match in chemical composition

If someone has ever work with this alloy could it be possible to know if a procedure developped with SM700MC can be used to weld A36 steel plate or A34 to 304?

Will appreciate a lot your help

Best regards

 

[Goahead]

Hi Falco,

By a cursory examination it seems to me that the two materials quoted are quite different, at least from their nominal data.

For the Steel S700 MC the information can be obtained from:

http://www.salzgitter-flachstahl.de...le_zum_Kaltumformen_thermomechanisch_gewalzt/

Two characteristics stand out:
Min. Yield Strength 700 MPa (reduced by 20 MPa if thickness >8mm)
and
"High-strength steels for cold-forming, thermomechanically-rolled"

Another supplier:

http://www.voestalpine.com/stahl/en...entPar.41044.File.tmp/TLB_Alform_E_190907.pdf

(referring to Alform 700 M) comments as follows:

"b) thermomechanically rolled steels can be stress-relief annealed in the temperature range 530–580 °C, but the yield strength and the tensile strength decrease during normalising."


The other steel, ASTM A36 is carbon structural steel:
Nominal Yield Stength 220-250 MPa
and is normally heat treated after welding to develop the required mechanical properties.

Without knowing any details about your WPS, it would seem that whatever special procedures are adopted for welding the first material are not necessary for the second, where even a standard or prequalified WPS might be sufficient.

Hoping this helps,
with best regards

http://www.welding-advisers.com/