Ultra-high Cleanliness Steel Wire

As for our plated steel, both hard drawn steel wire and piano wire use ultra-high cleanliness steel wire materials.

Ultra-high cleanliness steel is a steel wire material that minimizes internal inclusions causing breakage and suitable for applications focusing on durability and reliability, such as precision springs and saw wire.


StandardJIS G3502 SWRS82A-K / JIS G3502 SWRS82A-S
ManufacturerKobe Steel, Ltd.

Chemical composition

P0.02% or less
S0.02% or less
Cu0.1% or less
Ni0.1% or less
Cr0.1% or less

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