Re: [MW:16622] Effect of High amount of manganese in chemical composition

Refer Note b under Table 1 of the subject standard, can be accepted.

BTW don't circulate the standard as attachments. instead you can just give reference to the para and standard#.

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

hyperm2m@gmail.com 

--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
 
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.