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.
Standard
| Standard | JIS G3502 SWRS82A-K / JIS G3502 SWRS82A-S |
|---|---|
| Manufacturer | Kobe Steel, Ltd. |
Chemical composition
| C | 0.8–0.85％ |
|---|---|
| Si | 0.12–0.32％ |
| Mn | 0.4–0.6％ |
| P | 0.02% or less |
| S | 0.02% or less |
| Cu | 0.1% or less |
| Ni | 0.1% or less |
| Cr | 0.1% or less |