Recently during a comparison test of various martensitic stainless steels I included a soft sample with my hardened specimens. By soft I mean as delivered from the metal supplier (presumably annealed; for 440C, the hardness measured a 20 on the Rockwell C scaled compared to 60 for the heat...
I'm reviewing some heat treat specifications for our company. I would prefer to specify results (i.e. hardness)rather than process (i.e. heat to 2100°F ...). However, we curently require cold treatment of CPM10V to -105 F.
Should I write the specifcation to state "62-64 Rockwell C hardness...
Does anyone have supplier recommendations for conductive Silicon Carbide (SiC) which can be electric discharge machined (EDM)?
We have had material samples which were manufactured by direct sintering and reaction bonding. These however have not processed by EDM very well. Internet research...
