Effects of Cu Inclusion in SS202

Meaning check. Do you mean chemical analysis of copper to be 1.77%? Or do you mean you tested an inclusion and found it to be 1.77% copper? Or do you mean volume fraction of copper inclusion to be 1.77%? What is the controlling specification for this grade that you are working to for copper analysis and for inclusions? Milo

I have tested a smaple piece of SS202 (AISI ASTM SS202), and an inclusion of 1.77% of Cu found in it. As per the ASTM standards there is no Cu inclusion in SS202. I want to know that due to this Cu inclusion what will be the effect on the properties of the said grade.

What's it being used for?

How have you tested it? Maybe it is a stupid question: Are you sure that there is Cu in the metal and its content is 1.77%?

There are a number of issues to be considered and my original sensemaking questions remain largely unanswered.

The size and frequency of the inclusion (s) are of greater import than the fact that somehow (auger analysis?) that you know it is 1.77% Copper.

The presence of this implies that perhaps the melt shop did not do a good job with scrap segregation. What was melt spec for copper? What was melt analysis for copper? Also the inclusion may imply that there was insufficient ladle metallurgy after melt.

I do not know your process path, you have not even hinted at whether this is for a sheet/ strip/foil application where the inclusion presence may be a showstopper; Structural, where it may be of little import, or bar product where it could deleteriously affect fatigue and transverse mechanical properties or rip out a tool during machining.

You mentioned ASTM standards, but sadly fail to provide which ones are relevant.

Given more facts, we can provide better responses. given no facts, wise professionals will not conjecture.

Milo