GOST 9389
GOST 9389 (Carbon steel spring wire. Specifications)· GOST (Russia) · 2 materials
| Designation | Alternative designation | Material group | |
|---|---|---|---|
| 3K-7 | 3К-7 | Structural and constructional steels | chevron_right |
| KT-2 | КТ-2 | Structural and constructional steels | chevron_right |