binder galvanic surfaces - Your specialist for nickel coating
The most common nickel coating is electrodeposited sulfamate nickel, used as a diffusion barrier between the raw material and final coating. This material is also known as “technical nickel”.
Chemically deposited nickel “currentless nickel” is divided into several different types. Different surface hardnesses can be achieved thanks to the different phosphorous contents. The binder galvanic surfaces GmbH range contains both “Mid-Phos” (phosphorous content of 4–7%) and “High-Phos” (9–13%) products.
Electrolytic nickel-phosphorous is deposited under current, like sulfamate nickel. This technical surface coating is a “High-Phos” variant (9–13% phosphorous content).
Quality checks and coating thickness measurements are continuously carried out and documented during the coating processes.
Why choose nickel coating?
Sulfamate nickel “technical nickel”
This coating acts as a diffusion barrier between the raw material and final coating.
The advantages of this material are its outstanding ductility and good hardness.
Sulfamate nickel is mainly used in the connector sector. Solder pins, solder sockets, crimp pins, crimp sockets, punched parts or other precision parts
that will be crimped, bent or deformed after the electroplating process all benefit from such a coating.
Special characteristics
- High ductility
- Diffusion barrier
- Solderability
- Corrosion resistance
- Hardness 250–350 HV
Chemical nickel/“Mid-Phos” or “High-Phos”
This chemically deposited surface coating is optimal for precision parts with areas that are very hard to access. Blind holes, deep holes, edges and hollows can all be reached easily, which is often not the case with electrodeposited nickel. It is also possible to achieve a very even distribution of the coating thickness across the entire component. After the surface coating process, the “High-Phos” variant shows no residual magnetism.
Characteristics of “Mid-Phos” and “High-Phos”
- Low ductility compared with sulfamate nickel
- Diffusion barrier
- Solderability
- Corrosion resistance
Special characteristics of “Mid-Phos”
- Hardness 550–650 HV
Special characteristics of “High-Phos”
- No magnetism
- Hardness 500–600 HV
Electrolytic nickel-phosphorous “High-Phos”
Electrodeposited (under current) nickel-phosphorous (“High-Phos” 9–13% phosphorous content) is often used as a coating substructure to improve wear resistance, e.g. in the connector sector, for components with higher plugging cycles. When followed by a gold coating, the thickness of the latter can be reduced thanks to this substructure, even with the same high number of plugging cycles.
Special characteristics
- Low ductility compared with sulfamate nickel
- Diffusion barrier
- Solderability
- Corrosion resistance
- No magnetism
- Hardness 500–600 HV
