Astm E125 Reference Photographs.pdf !free! -

This category relates to the surface finish quality resulting from the finishing process (such as grinding or torch cutting) rather than a casting defect per se. It sets the standard for what constitutes an acceptable workmanship finish.

This is a critical category for aesthetic and functional reasons. Rough surfaces can act as nucleation sites for fatigue cracks. The photographs in this section provide a visual comparator for the general texture of the casting surface, ranging from smooth to severely rough. Astm E125 Reference Photographs.pdf

While might look like a dry technical manual of metal flaws, it is actually a "mugshot gallery" for invisible killers in the world of heavy machinery. This category relates to the surface finish quality

B-1 through B-4 Porosity shows up as rounded or elongated individual dots. Astm E125 Reference Photographs.pdf