A variety of comprehensive physical property tests are conducted before, during and after our treatment processes. The following is a list of some of these tests:
Titration is a laboratory technique to determine the chemical properties of the BLACKNITRIDE™. H&M is committed to maintain the properties of the solution within the appropriate parameters according to customer specifications.
Mount & Polish Samples
Samples of the base metal are placed in an epoxy medium and mounted in a laboratory press. The material is heated, cured for two minutes, cooled for three minutes and then polished in preparation for microscopic testing.
Tukon Hardness Tester
Tukon hardness tester is a microscopic testing for hardness and case depth to verify the degree to which the process has permeated the surface of the material.
Metallograph is an in-depth microscopic test to determine case depth, as well as grain structure of the material.
Superficial Hardness Tester
Superficial hardness tester is a non-microscopic hardness test procedure.
Profilometer is a surface roughness test to ensure adherence to specific surface requirements.
Salt Spray Unit
The salt spray unit is a testing unit to determine the degree to which a material can withstand corrosion per ASTM spec B117. A salt and water spray is applied over time to measure corrosion tolerances.