This innovative plating technology provides a nickel-free, Environmentally Friendly alternative to traditional nickel-based black plating systems. Designed to produce a durable and elegant gunmetal black finish, FH-199 offers superior Corrosion Resistance, smooth surface appearance, and excellent color stability while eliminating the environmental and health risks associated with nickel.
As global industries increasingly adopt green Surface treatment technologies, FH-199 stands out as a sustainable solution widely used in hardware, electronics, automotive parts, decorative plating, and precision instruments.
Traditional black nickel plating processes often rely on nickel, which may cause allergic reactions, skin irritation, and environmental concerns due to nickel’s toxicity. In response to international regulations and the growing demand for safer alternatives, Shenzhen Xinfuhua developed the FH-199 Nickel-free tin-cobalt gunmetal process.
This plating system combines tin (Sn) and cobalt (Co) alloys to achieve a deep gunmetal black finish without the need for nickel. The resulting surface is not only visually attractive but also offers excellent wear resistance, stable performance, and eco-friendly compliance.
FH-199 is formulated with advanced Electroplating Additives that ensure uniform coating thickness, smooth deposition, and strong adhesion on various substrates, including zinc die-cast, steel, brass, stainless steel, and aluminum alloys.
Nickel-Free Technology – Provides a safe, hypoallergenic, and environmentally compliant plating solution.
Deep Gunmetal Black Finish – Creates a stylish, modern gun-color appearance ideal for decorative and functional applications.
Strong Corrosion Resistance – Protects base materials against oxidation and wear.
High Stability – Maintains consistent plating performance in large-scale production.
Excellent Adhesion – Ensures durable coating on various metal substrates.
Uniform Deposition – Produces smooth, even coatings with minimal defects.
Eco-Friendly Compliance – Meets RoHS and REACH international environmental standards.
Cost-Effective Operation – Long bath life reduces chemical consumption and operational costs.
Surface Decoration: Provides a modern gunmetal black finish for luxury goods, consumer electronics, and decorative hardware.
Protective Coating: Enhances surface hardness and corrosion resistance.
Allergen-Free Plating: Suitable for applications requiring nickel-free finishes to prevent skin irritation.
Industrial Rework: Can be applied in re-plating or refurbishment of worn or defective components.
Uniform Coating Control: Ensures consistency in both rack and barrel plating applications.
Health & Safety: Completely nickel-free, eliminating nickel allergy risks.
Environmental Sustainability: Designed to comply with stringent environmental protection regulations.
High Performance: Offers deep black color with long-lasting durability.
Versatile Applications: Suitable for a wide range of industries including electronics, automotive, aerospace, and luxury goods.
Process Flexibility: Compatible with both manual and automated plating lines.
Reduced Maintenance: Stable bath chemistry simplifies operation and reduces downtime.
The FH-199 Nickel-Free Tin-Cobalt Gunmetal Process is widely applied across multiple industries:
Electronics: Casings, connectors, and decorative black finishes on consumer electronics.
Hardware Manufacturing: Door handles, locks, fasteners, and decorative components.
Automotive: Trim parts, interior accessories, and decorative elements requiring nickel-free plating.
Fashion Accessories: Watches, eyewear frames, jewelry, and belt buckles where skin contact requires hypoallergenic finishes.
Aerospace & Defense: Durable coatings for high-performance parts with aesthetic requirements.
Medical Equipment: Nickel-free plating for surgical instruments and devices requiring biocompatibility.
Q1: What is the FH-199 Nickel-Free Tin-Cobalt Gunmetal Process?
A1: FH-199 is an eco-friendly Electroplating Solution that produces a durable gunmetal black finish using tin-cobalt alloys, without nickel.
Q2: Why choose a nickel-free plating process?
A2: Nickel-free plating eliminates health risks (nickel allergy, skin irritation) and complies with international environmental regulations such as RoHS and REACH.
Q3: On which substrates can FH-199 be used?
A3: FH-199 is suitable for zinc die-cast, brass, steel, stainless steel, and aluminum alloys.
Q4: Does FH-199 provide corrosion resistance?
A4: Yes, FH-199 delivers excellent corrosion protection, ensuring long-lasting durability in various environments.
Q5: Is FH-199 suitable for decorative applications?
A5: Absolutely. FH-199 provides a deep, uniform gunmetal black finish ideal for luxury goods, electronics, and hardware decoration.
Q6: How does FH-199 compare to traditional black nickel plating?
A6: FH-199 offers the same aesthetic appeal with improved Environmental Compliance and without the health risks of nickel.
Q7: Can FH-199 be used in high-volume production?
A7: Yes, FH-199 is designed for stable performance in both small-scale and large-scale automated plating lines.
Q8: What safety precautions should be followed?
A8: Standard chemical handling guidelines apply. Operators should wear protective equipment and ensure adequate ventilation.
Common plating faults | Cause analysis | Processing method |
Light color, white hair | Too much tin, too little cobalt. Too little blackener. | Cobalt salt 0.8-1g/L; Add 2-5 mL/L of blackener; |
Bad positioning | Low proportion Excessive blackener 3. Too little锡 salt. | 1. Add supplement to adjust the specific gravity to 17 Be. 2. Add supplements and tin salts; 3. Add tin salt 0.05-0.1g/L; |
Turn yellow and discolored; bad position. | Too much blackener, too little tin salt. | Add tin salt 0.05-0.1g/L (Always dissolve with a chelating agent,) |
Very black but slightly yellow. | Excessive blacking agent, too little tin | Add tin salt 0.02-0.05g/L (Must be dissolved with chelating agent) |
Fogging and movement are not good. | Too much salt | Add cobalt salt 0.2-0.4g/L; (Must be dissolved with chelating agent) |
Fog but good positioning. | Too little cobalt salt 2. Temperature too high or too low | 1. Add cobalt salt 0.1-0.5g/L 2. Adjust to room temperature |
Plating hazy | Electroplating time too long, voltage too high | Shorten time (roll coat 15-25 minutes, voltage 4-6 volts) Hang electroplating for 30-50 seconds), voltage 2-3 volts |
Plating fading, uneven | Too little tin Too much blackening agent | Add 0.05-0.1g/L of tin salt. |
When adjusting the PH of the plating solution with dilute hydrochloric acid, be careful and it must not be lower than 10. When adjusting the PH with ammonia water, be careful and it must not exceed 12.
2. Tetravalent tin salts must not be used as they may cause hydrolysis of the plating solution.
3. It is recommended to use the supporting products of our company for convenient maintenance and management.
4. It is recommended to regularly replenish complexing agents, supplements, tin salts and blackening agents. When adding them, it is best to do so simultaneously to maintain consistent coating color and normal positioning.
Supplement 189A, 30 kilograms per drum
2. Complexing agent 179B: 30 kilograms per drum
3. Tin salt 179D: 25 kilograms per drum
4. Blackening agent 189C: 30 kilograms per drum
Email:fuhuaguoji@yeah.net
Address: Room 2101, Building 1, Hegushan Huicheng, No. 35, Guangtian Road, Bao 'an District, Shenzhen City, Guangdong Province （Office Space）
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