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Steel wires for springs

AutomotiveIndustrial Product/Material

Sumitomo Electric’s steel wires for springs, including piano wires, oil-tempered wires, and hard drawn steel wires play important roles as automotive and electronic parts, etc.

Characterized by high quality and high precision, these uniform and elaborate spring materials are achieved by Sumitomo Electric’s technologies and development capabilities refined through many years of operation.

Steel wires for springs

Our products

Oil-tempered wires

Oil-tempered wires

Made from super clean steel, the oil-tempered wires ensure stable quality and superb characteristics attained by careful quality management and Sumitomo Electric’s proprietary, prominent technologies. These products have been highly evaluated by customers.


Piano wires

Piano wires

The piano wires for precision springs are designed to meet more advanced needs. These products have been highly evaluated for their excellent formability and beautiful finish.


Hard steel wires

Hard steel wires

The wire quality derived from many years of experience and new proprietary technologies has gained high levels of confidence in and outside Japan.


Deformed wires

Deformed wires

The deformed wires are characterized by high dimensional precision, accurate shapes, uniform and stable wire shapes, as well as stable surface and internal quality. These products ensure high workability and reliability.

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