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Business Overview
Kiyomine Metal Industry is Japan’s first manufacturer of nickel silver and has built its business around the production of wrought copper products.
Wrought copper products refer to copper and copper alloys processed into forms such as sheets, strips, wires, rods, and tubes.
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Nickel Silver
For Existing Markets
As the domestic market leader, we are committed to manufacturing that continually earns customer trust in our nickel silver products.
For Next-Generation Markets
We develop value-added products that unlock the latent potential of nickel silver to meet future customer expectations.
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Phosphor Bronze
For Existing Markets
We strive to deliver products that customers insist must come from Kiyomine, maintaining their trust through our craftsmanship.
For Next-Generation Markets
We continue to refine our manufacturing strengths to meet the increasingly diverse needs of our customers.
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Kiyomine Alloys
For Existing Markets
As society advances, the demand for high-performance, high-value-added copper products grows with the miniaturization and high-density integration of electrical and electronic components.
To meet these demands, Kiyomine actively develops original alloys.For Next-Generation Markets
We further hone our manufacturing strengths to respond to the evolving needs of our customers.
For Existing Markets
Our wire and rod products are manufactured entirely in-house — from melting and casting raw materials to cold forging, rolling, wire drawing, and final finishing.
Leveraging our diverse product lineup, including nickel silver and phosphor bronze, and proprietary shaping technologies, we meet a wide range of customer needs.
For Next-Generation Markets
Demand for wire and rod products is expanding, particularly in electrical, electronic, and automotive components.
Through original alloy development and integrated production systems, we aim to exceed customer expectations.
For Existing Markets
Our plated strip products are widely supported for applications such as automotive and consumer connectors.
We offer a wide range of products including reflow tin-plated strips, matte tin-plated strips, and nickel-plated strips.
By integrating both material production and plating processes within the same facility, we can flexibly meet diverse customer needs.
For Next-Generation Markets
Functional plating that adds various value-added features to materials is increasingly in demand.
We aim to further enhance our proprietary and quality control technologies to expand our business to be recognized as the “Kiyomine of the plating Industry”.
The Future of Our Business
Kiyomine Metal Will Support Global Communications
As the world advances with AI and IoT, electronics will become even more integral to society.
The era of full-scale electrification and connectivity is just beginning.
The world is constantly changing, and the future is unpredictable.
That is why Kiyomine, known for its in adaptability, strives to be a one-of-a-kind manufacturer shaping the future.
In doing so, Kiyomine will continue to be a company essential to society.
Business Policy
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Kiyomine’s Strength
Phosphor Bronze That Contributes to the World
Phosphor bronze is an essential material for automotive and electronic components and trusted by industries worldwide.
It is also indispensable to Kiyomine’s business.
By leveraging the manufacturing strengths cultivated over 127 years, we aim to produce faster, in greater volume, and at lower cost—for the benefit of our customers and to contribute globally. -
Pioneer of Nickel Silver
Kiyomine and Nickel Silver
— A Legacy of Proven PerformanceKiyomine is proud to hold the highest production volume of nickel silver in Japan and was the first company in the country to manufacture it.
Nickel silver holds a great promise for the future, and Kiyomine has 127 years of experience and knowledge in handling it.
That is why we see it as our mission to share the value of nickel silver with the world.