[MW:19580] Why the chemical composition is different in the cast/Laddle analysis and product analysis in same material?

Dear Experts,

Why the chemical composition is different in the cast/Laddle analysis
and product analysis in same material? How is this possible?

I thik some of elements like C,N, H2, O2 & some extent of B can be
either added or reduced based on the furnace atmasphere.

My question is why specification stated for all elements for both plus
and minus side how it is increased?? is there any other metal
reactions will take place during working / heat treatment.

Pl advise

Thanks & Regards,
Thiyagarajan M
Sr. Engr / Technical & QE

--
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.