Electroless Plating Services
One-stop integrated CNC electroless plating with uniform coating & PTFE composite options for aerospace, medical and electronic precision components
ISO 14001:2015 ISO 9001:2015 IATF 16949:2016
ISO IATF16949 Compliant ENP With In-house CNC Machining
CustomParts-MFG delivers full-spectrum electroless nickel plating (ENP) paired with in-house multi-axis CNC machining, certified to ISO9001, IATF16949, RoHS & REACH global environmental specs. Our autocatalytic chemical deposition forms uniform Ni-P alloy coating without external electricity, available in low/medium/high phosphorus grades plus PTFE composite ENP for customized lubrication. With precise thickness control (0.0001~0.005”), our service eliminates edge buildup on blind holes, inner cavities and intricate geometries, widely used across aerospace, semiconductor, medical, automotive and fluid power industries.
The consistency and quality of their Electroless Plating process have eliminated field failures and extended maintenance cycles, making them an indispensable partner in our supply chain.
Core Outstanding Advantages of Electroless Plating
- 100% Uniform Deposition: Consistent coating across threads, deep grooves and complex contours, no dog-boning or uneven edge buildup, thickness tolerance controlled within ±0.5μm.
- Adjustable High Hardness: As-plated hardness 48–52 HRC; after proper heat treatment up to 68–70 HRC equivalent to hard chrome for heavy abrasion scenarios.
- Superior Anti-Corrosion Barrier: High-phosphorus ENP withstand over 500hrs neutral salt spray test, ideal for marine, chemical and harsh corrosive environments.
- Self-Lubricated Option: Ni-PTFE composite coating reduces dry friction coefficient down to 0.08~0.10, perfect for release molds and reciprocating moving parts.
- Zero Hydrogen Embrittlement Risk: Compliant with ASTM B850, safe for high-strength alloy steel critical components without post-plating cracking issues.
- Flexible Substrate Compatibility: Works on ferrous metal, aluminum alloy, copper and select pre-treated engineering plastics.
Four Classified Electroless Plating Grades for Custom Engineering
Low-Phosphorus ENP (1~5% P)
High hardness & magnetic property, prioritized for hydraulic pistons, gears and high-wear mechanical parts requiring strong abrasion resistance.
Medium-Phosphorus ENP (6~9% P)
Balanced hardness + corrosion resistance, most versatile general-purpose grade for auto components and standard industrial machinery.
High-Phosphorus ENP (10%+ P)
Non-magnetic, dense non-porous layer with premium chemical resistance, specified for semiconductor vacuum parts and medical sterilizable hardware.
PTFE Composite ENP
Embedded solid lubricant inside nickel matrix, combines anti-corrosion and permanent self-lubrication for injection molds and precision valve assemblies.
Check Out the ToolkitElectroless Plating Standard Process
We follow standardized in-house electroless plating procedures:
- Pre-production Machining & DFM: Optimize designs for plating allowance and complete CNC machining to required dimensions.
- Pre-plating Surface Treatment: Remove oil, oxides and impurities via degreasing, pickling and activation; selective masking is available.
- Electroless Deposition: Regulate bath temperature, pH and chemicals for stable Ni-P alloy coating.
- Optional Post-treatment: Provide heat treatment, passivation and secondary micro-machining as requested.
- Batch Quality Inspection: Conduct XRF thickness test, salt spray, adhesion and hardness tests in-house.
Electroless Plating Industrial Applications
- Aerospace & Defense: Landing gear accessories, hydraulic manifolds, avionics housings and high-temperature engine components.
- Semiconductor & Vacuum Equipment: Wafer clamps, process chamber fixtures and electrostatic chucks requiring non-magnetic clean-grade coating.
- Medical & Dental Devices: Sterilizable surgical cutters, implant auxiliary fittings and medical tray assemblies complying with biocompatibility standards.
- Automotive & EV Industry: Fuel injector housings, battery contact plates and transmission core parts against fluid corrosion.
- Fluid Power & Valve System: Pump bodies, manifold runners and sealing components for long-term leak-free service.
One-stop Integrated Electroless Plating Service Unique Merits
- All processes completed in-house from design, machining to ENP finishing and final packaging, no third-party transit damage or cross-supplier quality disputes.
- Flexible production schedule: Standard plating adds 3~5 working days based on machining lead time; expedited rush service available for urgent prototype batches.
- Full document delivery: Every order comes with COA, thickness report, salt spray certificate and full material traceability files.
Electroless Plating Performance Benefits
Why High-Performance Parts Specify Electroless Plating
- 100% Uniform Thickness: ±0.5µm tolerance even on threads and grooves – no “dog-boning” or edge buildup.
- Exceptional Hardness: As-plated 48–52 HRc; heat-treated up to 68–70 HRc (comparable to hard chrome).
- Superior Corrosion Resistance: Salt spray >500 hours (high-phosphorus) with no red rust.
- Lubricity Options: Ni-PTFE coatings reduce friction coefficient to 0.08–0.10 (dry).
- No Hydrogen Embrittlement: Critical for high-strength steels (per ASTM B850).
- RoHS & REACH Compliant: Cadmium-free, lead-free, hex-chrome free.
SinoCMI’s One-stop Electroless Plating Service Workflow
- Design & DFM Consultation: Optimize part design for anodizing—including racking, masking, and surface prep.
- Precision Machining: Manufacture titanium components in-house to ensure dimensional accuracy.
- Surface Preparation: Precision cleaning, etching, and finishing prior to anodizing.
- Anodizing Process: Controlled voltage/current process in certified clean environments.
- Quality Inspection: Color verification, thickness testing, adhesion checks, and salt spray testing per ASTM B117.
- Packaging & Traceability: Secure, clean packaging with full material and process documentation.
FAQs About Electroless Plating
How uniform is electroless nickel coating on intricate complex parts?
expand_less expand_moreA: Unlike conventional electroplating relying on electric field distribution, autocatalytic ENP deposits identical thickness on blind holes, inner bores and all irregular geometry without edge thickening.
Can we apply electroless nickel onto aluminum alloy substrates?
expand_less expand_moreA: Yes, we adopt proprietary zincating pre-treatment or direct activation process to realize firm Ni-P adhesion on all common aluminum grades.
What is your regular ENP production lead time?
expand_less expand_moreA: Standard plating cycle takes 3–5 business days after completed CNC machining; fast-track expedited service is available upon urgent project requests.
Do you offer pre-production prototype sample service?
expand_less expand_moreA: Free sample development and performance testing available to validate coating performance before mass production confirmation.
Do you offer different types of titanium anodizing?
expand_less expand_moreA: We provide both Type II (decorative and corrosion-resistant) and Type III (hard coat, MIL-A-8625 compliant) anodizing, along with specialized processes like bio-compatible anodizing for medical applications.
Which materials can be processed with electroless plating?
expand_less expand_moreA: We plate a wide range of conductive and non-conductive materials, including steel, stainless steel, aluminum, copper, and engineered plastics. Pretreatment (e.g., etching, activation) is applied to ensure optimal adhesion and coating performance.
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