Hard gold plating rethought: Environmentally friendly. Safe. Future-oriented.

Environmentally friendly process with clear benefits for production

A cyanide-free electrolyte such as AURUNA^® 3408, which also does not contain any grain refiners such as arsenic, thallium, lead, cadmium, cobalt, or tellurium, offers all the advantages of an environmentally conscious production:

• No special safety requirements
  The plating process can be done without special safety equipment like respirators, protective suits, or complex ventilation systems. This lowers operating costs and makes work organization easier, protects employee health, and creates a safer work environment.

• No restrictions due to hazardous substance limits
  The electrolyte does not affect a company's hazardous substance account. This leaves more freedom for other processes involving regulated substances – or even allows additional production capacities.

• Simpler and more cost-optimized disposal
  As there are no toxic residues, disposal can often be carried out via regular chemical waste channels. This saves disposal costs and reduces the administrative effort required for approvals and documentation.

• Reduced risk of downtime
  The fact that hazardous substances are no longer used reduces the risk of regulatory inspections, incidents, or temporary production stoppages - a positive effect on planning reliability.

• Sustainability advantage for customers and stakeholders
  Producers can communicate the use of AURUNA^® 3408 as an active contribution to environmental and sustainability goals - a competitive advantage in tenders and customer relationships.

AURUNA^® 3408 is a cyanide-free gold-copper electrolyte. The resulting layers are highly reflective and light yellow in color, making them ideal for high-quality, elegant, and decorative surfaces.

The excellent corrosion resistance ensures long-term performance even under challenging conditions, making AURUNA^® 3408 an attractive sustainable alternative for technical applications as well.

AURUNA^® 3408 impresses with its versatility and is suitable for a wide range of industrial and decorative applications. The electrolyte meets the requirements of the electronics industry - for example, for printed circuit boards, contact pins, and connectors - as well as the demands of high-quality surfaces in jewelry manufacturing, watches, eyeglass frames, and other lifestyle products. Even in demanding areas such as defense technology, where materials are subject to strict standards such as MIL specifications, AURUNA^® 3408 offers a reliable solution.

Decorative applications

The ultra bright, light yellow gold surface gives jewelry, watches, and eyewear a particularly elegant and durable finish.

At the same time, sustainable manufacturing stands for responsible production. With skillful communication, this can lead to a significant increase in sales, as an increasingly environmentally conscious group of buyers values quality and ethics equally and considers both aspects when making purchasing decisions.

Technical applications

Components plated with AURUNA^® 3408 benefit from long-lasting functionality and high reliability. The layers offer excellent electrical conductivity, corrosion protection, and abrasion resistance, making them ideal for demanding applications such as connectors or contact surfaces.

The harmless composition of the electrolyte also enables safe, efficient, and sustainable production.

Printed circuit boards

Printed circuit boards in which AURUNA^® 3408 is used also benefit from the excellent solderability and bondability of the coating. The high purity and permanently plain surface structure of the low-stress layer enable very good and long-lasting adhesion of solder or bonding wire.

In addition, it is highly compatible with other printed circuit board materials such as copper, nickel, palladium, and solder resist.

Quick and easy way to achieve truly sustainable hard gold plating

AURUNA^® 3408 stands for sustainable and yet high-performance hard gold plating – complemented by comprehensive service that supports you right from the start. Our specialists will advise you specifically on your individual requirements profile and check the integration of the electrolyte into your existing process landscape. In the next step, you will receive an economically optimized cost calculation and practical prototypes from our test center for evaluation. After successful validation, our technical service will ensure smooth implementation into your production on site.