The majority of the parts we anneal are 70% Cu / 30% Zn. We anneal at 500 degrees F for 8 hours, gas fired oven, normal atmosphere. I have completed exhaustive stress corrosion experiments with gases from ammonium chloride solutions (raised to pH of 10.0) and mercurous nitrate solutions. The...
Electroless Nickel should mimic the surface of the substrate. If the substrate is polished, the EN plate will be bright - if the substrate is etched, matte finish (assuming all components are within their operating parameters).
