MIRALLOY®

MIRALLOY®

MIRALLOY®

Product catalog summary
Introduction
MIRALLOY® is a series of copper-tin-(zinc) electrolytes developed as nickel-free alternatives for coatings in the clothing industry. Since 1981, it has been used globally, offering over 30 years of experience and continuous development.

Product Features
  • Nickel-free copper-tin-(zinc) alloy coatings.
  • Bright white appearance similar to silver.
  • Diamagnetic and free from heavy metals like Cr, Pb, Co, Th.
  • Resistant to tarnishing and corrosion.
  • Excellent layer thickness distribution and wide operating range.
  • RoHS compliant and can be lacquered or combined with precious metals.

Applications
  • Used in zip parts, metal buttons, bra fasteners, buckles, and haberdashery.

Technical Specifications
  • Electrolyte type: Alkaline-cyanide.
  • Metal content: 8.5 g/l Cu, 34.0 g/l Sn, 0.75 g/l Zn.
  • pH value: > 13, Operating temperature: 60 °C.
  • Current density range: 0.5 (0.3 - 1.0) A/dm².
  • Plating speed: Approx. 0.12 μm/min at 0.5 A/dm².
  • Anode material: MMO (PLATINODE® 167, graphite).

Coating Characteristics
  • Alloy composition: 55 wt. % Cu, 30 wt. % Sn, 15 wt. % Zn.
  • Colour: White, Brightness: Bright.
  • Hardness: Approx. 550 HV, Max. thickness: 5 μm.
  • Density: 8.2 g/cm³.

Compliance with European Nickel Regulation
Due to nickel allergies affecting a significant portion of the population, European regulations restrict nickel content in consumer goods. MIRALLOY® ensures compliance by providing nickel-free coatings that do not release more than 0.5 μg/cm²/week of nickel under normal conditions.

Definition of Prolonged Skin Contact
According to ECHA, prolonged skin contact is defined as contact with nickel-containing items for more than 10 minutes on three or more occasions within two weeks, or 30 minutes on one or more occasions within two weeks. This regulation affects various consumer goods beyond clothing accessories.
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Catalog excerpts

MIRALLOY®-1

Copper-Tin-(Zinc) Electrolytes as Nickel-Free Alternatives Since 1981, MIRALLOY® has been a good alternative for nickelfree coatings in the clothing industry. Today, our customers all over the world profit from more than 30 years of experience and the continuous further development of the product series. With MIRALLOY®, electrolytes are used to deposit copper-tin(-zinc) coatings in rack and barrel plating. The colour of the coatings is white - similar to silver. Plated garment accessories, such as zips and metal buttons, offer a very high level of resistance to everyday wear. A further plating layer with gold, rhodium, palladium or other precious metals, as well as tarnish protection if required, can be added problem-free by choosing a suitable process and with the right pre-treatment. Applications • Zip parts • Metal buttons • Bra fasteners • Buckles • Haberdashery Advantages • Copper-tin-(zinc) alloy coatings • Bright white coatings (similar to silver) • Diamagnetic • Nickel-free (§27 of REACH, Ann. XVII, Reg. (EC) No 1907/2006, Standard 100 by OEKO-Tex®) • Free from heavy metals like Cr, Pb, Co, Th etc. • Resistant to tarnishing and corrosion • Excellent layer thickness distribution • Wide operating range • Can be lacquered • Can be combined with precious metals • The coatings are RoHS compliant • Tried and tested process by many zip m

 Open the catalog to page 1
MIRALLOY®-2

MIRALLOY® FOR THE CLOTHING INDUSTRY TECHNICAL SPECIFICATIONS MIRALLOY® 2844Electrolyte characteristicsCoating characteristics Electrolyte type Metal content pH value Operating temperature Current density range Plating speed Anode material Coating Alloy composition Colour of deposit Brightness Hardness of deposit HV 0.015 (Vickers) approx. values Max. coating thickness Density of the coating MIRALLOY® Copper-Tin-(Zinc) Electrolytes for the Clothing Industry: • MIRALLOY® 2841 (white) for rack and barrel operation • MIRALLOY® 2844/LC/E (white) for barrel and rack operation • MIRALLOY® 2850 (white)...

 Open the catalog to page 2
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.