I am looking for a direct comparison between the corrosion resistance of black zinc vs. ferritic nitrocarburizing. I can't find anything relating to QPQ that will give hours to white or red rust. I have some info that shows black zinc without a sealer at 72 hours to white rust.
What corrosion protection process would be best to eliminate the possibility of hydrogen embrittlement in 52100 bearing steel? Is zinc nickel a possiblity?
I have a question about the potential for crack propagation in both .080 and .063 sheet. We currently laser cut and turret punch shapes into these sheets. All things being equal, I am wondering if either method has some inherent advantages/disadvantages as far as the tendency to start fatigue...
I have a part that is stamped from 12 gauge 715 HSLA, grade 50 steel. It is then heat treated (QPQ). Occasionally when I inspect the parts they are ductile when bent and other times they are fairly brittle. Is this a material issue or does this have something to do with the heat treat...
