3K-7
For the production of cold drawn wire, used for the manufacture of springs are wound in a cold state and not be quenched.
Classification
| Country | Section | Category |
|---|---|---|
| CIS, Russia, Ukraine | Structural steel | Spring-spring structural steel |
Chemical composition
| Standard | Fe, % | Si, % | Mn, % | Cr, % | Cu, % | Ni, % | P, % | C, % | S, % |
|---|---|---|---|---|---|---|---|---|---|
| GOST 9389-75 | > 97.88 | 0.17–0.37 | 0.5–0.8 | < 0.05 | < 0.04 | < 0.05 | < 0.02 | 0.68–0.76 | < 0.03 |
Information on suppliers
Standards
| Standard | Description |
|---|---|
| GOST 9389-75 | GOST 9389 - 75 |
Description of chemical elements
| Element | Units of measurement | Description |
|---|---|---|
| Fe | % | Iron |
| Si | % | Silicon |
| Mn | % | Manganese |
| Cr | % | Chrome |
| Cu | % | Copper |
| Ni | % | Nickel |
| P | % | Phosphorus |
| C | % | Carbon |
| S | % | Sulfur |