FUNCTIONAL & DECORATIVE SURFACE FINISHING
Electrochemical and electroless coatings tailored to rigorous industrial requirements: corrosion inhibition, low friction coefficients, electrical conductivity, and flawless aesthetics. Processed seamlessly following precision CNC machining—zero multi-vendor handoff risk.
Legal Certainty (BGB)
German Contractual Partner (Hückelhoven, NRW)
A.TR 0% Tariff Duty-Free
EU Customs Union Compliant · DDP Delivery
DIN EN 10204 3.1
Certified Inspection & Bath Quality Reports
EMPB / PPAP Level 3
First Article Inspection (FAI) Report
ISO 9227 Salt Spray Test
Up to 1,000h Corrosion Resistance (NSS)
100% NDA Protection
Confidentiality Agreement Prior to Upload
OUR SURFACE FINISHING PROCESSES IN DETAIL
Every finishing system is specifically matched to base materials and mechanical, chemical, and climatic operating environments:
Electroless Nickel Plating (ENP)
Autocatalytic chemical deposition. Unlike conventional electroplating, ENP builds an absolutely uniform deposit thickness over complex geometries—including blind threaded holes, interior cavities, and sharp edges.
- Deposit Thickness: 5 µm to 50 µm with micron-level contour fidelity
- Hardness: 500–550 HV as-plated (up to 1000 HV heat-treated)
- Properties: Outstanding wear resistance and low coefficient of friction
- Substrates: Carbon steel, stainless, brass, aluminium alloys
Chrome Plating (Bright, Matte, Black, on Alu)
Electrochemical chromium deposition delivering high surface hardness and superior finish. We also master the specialized zincate pretreatment for direct chrome plating onto lightweight aluminium alloys.
- Bright Chrome: Representative mirror-like decorative and protective layer
- Matte Chrome: Glare-free, satin-smooth technical industrial finish
- Black Chrome: Optical light-absorbing, low-reflectance coating
- Chrome on Aluminium: Maximum weight reduction with hard chrome durability
MIL-DTL-5541 Alodine & Electropolishing
High-specification passivation processes developed for aerospace, defense, semiconductor, and medical applications.
- Alodine / SurTec 650: Hexavalent chromium-free passivation for aluminium (electrically conductive)
- Electropolishing: Anodic micro-smoothing of stainless steel (1.4301 / 1.4404)
- Gold Plating: 24k hard gold for electronic pin headers & RF connectors
- Antique Bronze & Rose Gold: Premium architectural and luxury hardware finishes
TECHNICAL METRICS OF PLATING PROCESSES
Side-by-side comparison of deposit thickness, hardness, and corrosion performance:
| Finishing Process | Typical Thickness | Surface Hardness (HV) | Salt Spray Test (ISO 9227 NSS) | Primary Engineering Feature |
|---|---|---|---|---|
| Electroless Nickel (Mid/High Phos) | 10 – 35 µm | 550 HV (heat treated: up to 1000 HV) | > 240 – 500 hrs | Completely uniform in blind holes & threads |
| Bright / Hard Chrome | 15 – 50 µm | 800 – 1100 HV | > 120 – 300 hrs | Ultra-low friction coefficient, maximal wear defense |
| Matte & Black Chrome | 10 – 25 µm | 700 – 900 HV | > 150 hrs | Non-reflective, anti-glare, premium haptic texture |
| Alodine / SurTec 650 (MIL-DTL-5541) | < 1 µm (molecular) | Substrate hardness | > 168 hrs (Class 3) | Electrically conductive, ideal paint/primer base |
| Electropolishing (Stainless) | 5 – 15 µm removal | Work-hardened | Highest passivity | Eliminates bio-adhesion, cleanroom & pharma approved |
| Gold Plating (Hard Gold) | 0.5 – 3 µm | 150 – 200 HV | Exceptional (Precious metal) | Lowest contact resistance for electrical connectors |
EXAMPLES OF COATED COMPONENTS
Real manufacturing results from our electroplating division:
REQUEST COATING SERVICES FOR YOUR PARTS
Submit drawings, batch quantities, and required layer thicknesses for prompt feasibility verification.