Black Superior

NeroSuperior is a high-performance technical surface coating developed by Eurogalvano, designed to provide high corrosion resistance, surface hardness, aesthetic stability, and improved tribological properties.
The treatment is suitable for both functional and decorative applications in advanced industrial and technical sectors.

Technical Characteristics

Corrosion Resistance

• High protection against atmospheric and chemical agents
• Superior performance compared to many traditional black nickel coatings
• It does not require oiling or transparent protective varnishes but can also be painted glossy or matt.
• It is available in pearl versions (from 3Q7 to Classic Perla)
• Intrinsic stability of the coating (Salt spray resistance values available on request depending on the applied cycle.)

Surface Hardness

• 550–600 HV (as deposited)
• Up to 1000 HV with post-treatment
• High resistance to friction wear
• Increased component service life

Tribological Properties

• Reduction of the coefficient of friction
• Improved behavior under contact and sliding conditions
• Suitable for components subject to mechanical wear

Light Absorption

• Absorption of up to 98% of incident light
• High anti-reflective effect
• Suitable for optical and technical applications

Thermal Resistance

• Stability of protective and mechanical properties at elevated temperatures
  (Specific values available upon request depending on the substrate and coating thickness.)

Electrical Conductivity

• Maintains good electrical conductivity
• Technical alternative to insulating paints or oxidative treatments
• Suitable for electronic housings and industrial components

Compliance and Safety

• Low nickel release alternative (very low-release alloy)
• Compliant with 4MSI guidelines for contact with drinking water
• Process free from fluorides and ammonia

Coating Uniformity

• Thin and controlled coating deposition
• High uniformity even on complex geometries
• Suitable for precision components
• Minimal impact on dimensional tolerances

Appearance and Finish

• Color tone: from gunmetal gray to deep black
• Available finishes: glossy, satin, matte, pearlescent
• High color stability

Application Sectors

• Automotive
• Technical components
• Optics and instrumentation
• Industrial electronics
• Sporting firearms
• Design and furniture
• Fashion
• Handles and hardware