Simple Solutions That Work! Issue 6

Contact: CHRIS NEELY cneely@armoloyofohio.com Base Materials Surface Hardess (as applied) Deposit Thickness Uniformity of Deposit Tolerance Adhesion Wear Factor Lubricity Corrosion Resistance Stripping Characteristics Surface Preparation Cost All metals except aluminum, magnesium, titanium Rc 78 .000010”/.0006” Normal deposits .0001”/.0003” .0001”±.00002” Must Eng. Properly for ± .00005” “no build up” Absolute: will bend/flex after applied Excellent Excellent: nodular finish Excellent with .0001”-.0002” deposit Can be stripped Optimum properties between 12/32 RMS. Can improve finish; no bake required Priced on per job basis Most ferrous and non-ferrous metals: problems with high alloy steels Rc 62/66 .000010”+: can and will become cracked and stressed after .0001” deposit Every .0001” =.0001” build up (dog bone effect) Normal edge build-up is .0001” per each .0001” applied Good to poor: will chip-crack easily; poor on sharp edges Good Good to poor: galls against itself Fair on Deposits less than .001” Difficult to do without damage to basis metal Optimum properties between 12/32 RMS. Should be baked after deposit Varies by area and plater All ferrous and non-ferrous metals; problems with hihg alloy steels and stainless steels Rc 50/55 (Rc 60/65 after heat treat) .000050”/.005” max normal deposits .0003”/.0008” range Uniform Uniform up to .001”; .001” to .003” ± .0005” ; no edge build up Good: better than electroless nickel Better than Electroless nickel Better than Electroless Nickel Superior at .0005” / .0008” deposit Can be Stripped Optimum properties between 12/32 RMS. Can be post-baked for hardness About 50% more than Electroless nickel; Can be rack or barrel plated: All ferrous and non-ferrous metals: problems with high alloy steels and stainless steels Rc42/48 .0001”/.0007” Rec- ommended deposit is .0003”/.0005” Uniform: teflon co-deposited very uniformly within nickel Uniform up to .0007”; no edge build up Good Good Superior to Electroless Nickel and nickelizing Excellent at .0005” Can be Stripped Optimum properties between 12/32 RMS. Post-baked at 300°F Can be rack or barrel plated: more expensive than Elextroless Nickel No aluminum or alloys with high tin, zinc, or copper content Rc70/90 basis metal modifies surface hardness 000050”/.0002”: growth and depth Uniform Varies from vendor to vendor Good: is eleastic in only one direction flex = cracks Good Fair/good: not good against itself Fair Very difficult to achieve Best results from high alloy, hardened. Good finish on basis material Varies by area and vendor Armoloy TDC Hard Chrome Nickelizing Nyflon 25 PVD / CVD 111