This makes it less prone to tarnishing and discoloration, and helps it retain its beauty and luster over time.ĭuctility: Shakudo is relatively ductile, which means it can be easily shaped and formed into various shapes and sizes. This makes it more resistant to scratches and dents, and helps it maintain its shape and appearance over time.Ĭorrosion resistance: Shakudo is more corrosion-resistant than pure copper, due to the presence of gold and silver in the alloy. Hardness: Shakudo is harder than pure copper, due to the addition of gold and silver to the alloy. Some of the key properties of shakudo include: It has a deep blue-black color that is achieved by oxidizing the surface of the metal. Shakudo is an alloy of copper and small amounts of gold, silver, and other metals. It is often used to make jewelry and other decorative items. It is often used to make tsuba and other sword fittings.Ĭhirimen shakudo: This type of shakudo is made with a higher proportion of silver than other types of shakudo, and has a lighter, more muted color. Kinkō shakudo nanako: This type of shakudo is similar to kinkō shakudo, but has a rough, granulated surface texture created by hammering the surface of the metal. It is made with a lower proportion of gold than kinkō shakudo, and has a lighter, more muted color. Jūhō shakudo: This type of shakudo is used to make jewelry and other decorative items. It is typically made with a higher proportion of gold than other types of shakudo, in order to achieve a deep blue-black color. Kinkō shakudo: This type of shakudo is used to make sword fittings, such as tsuba (hand guards), menuki (grip ornaments), and other decorative items. There are several different types of shakudo that are used in traditional Japanese craftsmanship. The proportions of the other elements in shakudo are carefully controlled in order to achieve the desired balance of strength, corrosion resistance, and color. The addition of gold and silver to copper creates an alloy that is harder and more corrosion-resistant than pure copper, while still maintaining the desirable color and ductility of the base metal. In general, shakudo contains at least 4% gold and at least 1% silver, although the proportions of these metals can vary widely. The exact composition of shakudo varies depending on the specific application and the desired properties of the final product. Shakudō is an alloy of copper and small amounts of other metals, including gold, silver, and sometimes iron or other elements.
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