A11
Carbon Sulfur Steel.
Bolts, nuts, processed by cutting. In the automotive industry — a plug of inclusion of coupling, chain.
Classification
| Country | Section | Category |
|---|---|---|
| CIS, Russia, Ukraine | Structural steel | Improved machinability structural steel |
Chemical composition
| Standard | Fe, % | Si, % | Mn, % | Cr, % | Cu, % | Ni, % | P, % | C, % | S, % |
|---|---|---|---|---|---|---|---|---|---|
| GOST 1414-75 | 97.43–98.92 | < 0.1 | 0.8–1.2 | < 0.25 | < 0.25 | < 0.25 | 0.06–0.12 | 0.07–0.15 | 0.15–0.25 |
Information on suppliers
Physical characteristics
| Temperature, °C | $$\rho$$, $$\frac{kg}{m^3}$$ |
|---|---|
| 20 | 7840 |
Mechanical properties at 20 °C
| Rolling | Standard | Size, mm | Tension | Classifiers | $$\sigma _{U}$$, $$MPa$$ | $$\sigma_{P}$$, $$MPa$$ | $$\psi$$, % | d5, % | Treatment |
|---|---|---|---|---|---|---|---|---|---|
| Rental hot rolled. | GOST 1414-75 | hot rolling | 410 | 34 | 22 | ||||
| Rental calibrated. Hardened. | GOST 1414-75 | calibrated, cold-work | 490 | 390 | 10 |
Brinell hardness number
| Rolling | Standard | Classifiers | Value, HBW |
|---|---|---|---|
| Rental calibrated. Hardened. | GOST 1414-75 | calibrated, cold-work | 207 |
| Rental hot rolled. | GOST 1414-75 | hot rolling | 160 |
Technological Properties
| Flake Susceptibility | Propensity to temper brittleness |
|---|---|
| not sensitive | not inclined |
Analogues
| USA | Bulgaria | Germany |
|---|---|---|
| G12120 | A9 | 11 SMn 30 |
Standards
| Standard | Description |
|---|---|
| GOST 1414-75 |
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 |
Description of physical characteristics
| Parameter | Units of measurement | Description |
|---|---|---|
| $$\rho$$ | $$\frac{kg}{m^3}$$ | The density of the material |
Description of mechanical properties
| Parameter | Units of measurement | Description |
|---|---|---|
| d5 | % | Elongation at break |
| $$\sigma _{U}$$ | $$MPa$$ | Ultimate tensile strength |
| $$\sigma_{P}$$ | $$MPa$$ | Proportionality limit |
| $$\psi$$ | % | Reduction in cross section on fracture |