It is non-allergenic; its other advantages include antimycotic [6] and weak antimicrobial (especially after abrasion) [7] attributes, and resistance to tarnishing. It has been studied for its antimicrobial hospital applications. [8] Nordic Gold was developed by Mariann Sundberg while she worked for the Finnish metal company Outokumpu. [9] .

2022年3月28日 · I've seen versions that use less copper, 80-85 and add tin and zinc, resulting in a lighter gold color and "supposedly" more tarnish resistant. Also, would a gold electro-plating make it tarnish resistant?

2025年1月9日 · Does Nordic Gold tarnish or rust? Nordic Gold exhibits high corrosion resistance, meaning it does not tarnish or rust easily. This is due to its specific chemical properties and the controlled alloying process. This makes it a very durable and low maintenance material.

It’s hard to destroy Nordic Gold, as it requires extreme temperatures to bend, deform or melt. It also takes a long time for Nordic Gold to tarnish. So while all objects undergo oxidation when exposed to the elements, it takes far longer for the effects …

北欧金（Nordic gold）是一种呈金色的铜合金，它的化学成份为89%铜，5%铝，5%锌和1%锡。 1991年最早由瑞典制币厂用来制10瑞典克朗。 10仙，20仙和50仙欧元都使用这种合金制造。

2003年10月23日 · By alloying the red-brown copper, the colour of something like a coin can be changed considerably to obtain a look much closer to gold, hence it's name, Nordic Gold. The second key challenge was to ensure the tarnish resistance of the coins.

2023年7月15日 · One of the most prevalent uses of Nordic Gold is in euro coins. Specifically, the 50 cents, 20 cents, and 10 cents coins are made of this material. The European Union chose Nordic Gold for its durability and its resistance to tarnish and corrosion. Nordic Gold is also often used in commemorative coins.

2023年7月4日 · Nordic Gold is a proprietary alloy developed by the Mint of Finland in collaboration with various Nordic countries. It was specifically created to mimic the visual appearance of gold while offering a more affordable and durable alternative for coin production.

Learn how alloy compositions, such as copper and nickel, affect gold’s susceptibility to tarnish, especially in lower-karat pieces. Get valuable tips on recognizing, preventing, and restoring tarnished gold jewelry with both DIY and professional methods, ensuring your treasured pieces remain brilliantly beautiful for years.

Does Nordic Gold Tarnish? One key characteristic that makes Nordic Gold desirable for coinage and other applications is its resistance to tarnishing. Tarnish, a thin layer of corrosion that forms over metals as their outermost layer, undergoes a chemical reaction, often resulting in a dulling or discoloration of the metal.