Scope: Our quality standards play a key role in making sure the needs of our partners and their customers are met or even surpassed. This specification defines performance requirements for Capron Components which require a Duplex Nickel Plating and Trivalent Chromium Finish.
- Standard Practice for Preparation of Low Carbon Steel for Electroplating ASTM B-183
- Standard Specification for Electroplating of Duplex Nickel and Chromium, ASTM B456
- ASTM B 556 Measurement of Thin Chromium Coatings by Spot Test
- ASTM B-117 Standard method of salt spray testing for corrosion resistance
- ASTM B764 Simultaneous Thickness and Electrochemical Potential Determination of Individual Layers in Multi-layer Nickel Deposit (Step Test).
All of the following requirements must be met to achieve acceptable quality. No one requirement, exclusive of others, is capable of ensuring satisfactory performance.
Unless otherwise stated, all part testing requirements apply to those areas of the part identified as a significant surface.
THE FOLLOWING SIFNIFICANT CHARACTERISTICS WILL BE MEASURED AND KEPT ON FILE.
- Cleaning Prior to Electroplating:
- Steel parts shall be cleaned using principles defined in ASTM B 183.
- Plating Adhesion Metal Coatings Test (ASTM B 571)
- Bend Testing: No peeling, flaking, or lift-off of the electroplate from the substrate or between the layers of the electroplate is permitted.
- Grind saw Test: No lifting or peeling of the electroplate from the substrate or between layers of the electroplate is permitted.
- Nickel Plating Thickness (ASTM B 487, ASTM B 556)
- The nickel plating thickness on significant surfaces shall be checked at locations specified per part. Total nickel applied 0.5 mils (.0005 inch) minimum. Total chromium applied 0.007 mils (.000007 inch) minimum. The semi-bright nickel plating thickness shall be greater than or equal to 60% of the total nickel plating thickness. The bright nickel plating thickness shall be less than or equal to 40% of the total nickel plating thickness.
- Corrosion Protection
- Parts must meet corrosion requirement of 48 hours salt spray test as performed in accordance with ASTM B-117.