Not a replica, the image is 120X not 100X, sorry.
I am comparing some OEM castings vs. Chinese aftermarket. This attached picture is of an OEM casting at 120X.
The nodules seem much smaller than the OEM version...
Not sure if I can attach more than one image in a thread. This attachment is the 100X 5% Nital image. https://files.engineering.com/getfile.aspx?folder=024113ec-234c-485b-86cc-facab5652dc5&file=China_Etched_w_MEasurements.PNG
I am having a hard time finding a match for this material. The attached picture is etched in 5% Nital at 100X. I also attached a picture of XRF results.
I have a theory that this is a form of ductile iron that has maybe gone through a heat treatment process but I am unsure.
Any help or advice...
