Dear Farhang,Mn upto 1.60% max. permitted as per note b of the table of the standard and your material perfectly acceptable. No need to think much on this.Regards,Edward
On Mon, Jan 28, 2013 at 2:27 PM, Farhang <hyperm2m@gmail.com> wrote:Dear All
I have tested a specimen of A 516 Gr. 70+Normalized (thickness: 10mm) for chemical analyze, impact, tensile & metallographic.
Tensile & Impact were acceptable, but i have problem in chemical analyze as follow:
ü Tensile Strength:
Fy: 360 Mpa UTS: 531 Mpa
ü Impact Test:
absorbed energy in impact: 150 j (sub size 7.5*10*55) – it was very good
ü chemical analyze:
C:0.09/Mn:1.534/Si:0.35/P:0.005/S:0.005/Cr: 0.069/ Ni: 0.046/ Cu: 0.01 /Mo:0.013/ Cu: 0.104/ V:0.055 /W:0.0026 /Ti: 0.027 /AL:0.042/ Sn:0.001/1 Pb:0.0002/ As:0.002/ Sb:0.0023/ Zr:0.0015/ Nb:0.0475/ Ca: 0.0031
But according to standard ASTM A516(attached) Mn shall be 0.79~1.30 but here Mn% is over. It was 1.53% .
I need to know the effect of this discrepancy???
Does it important?
Isn't carbon% very low????????
What is high amount of manganese could be causes?????
M. Farhang
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Best Regards,
Vijay patre
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