A40G
Sulfur-manganese steel.
Parts of complex shape are processed on the machines, vending machines, and parts, which are increased requirements for cleanliness, surface running at higher voltages and pressures: the axis of the rollers, bushings, rings, gears, fingers, screws, bolts, nuts, screw shafts.
Classification
| Country | Section | Category |
|---|---|---|
| CIS, Russia, Ukraine | Structural steel | Improved machinability structural steel |
Chemical composition
| Standard | Fe, % | Si, % | Mn, % | Cu, % | P, % | C, % | S, % |
|---|---|---|---|---|---|---|---|
| GOST 1414-75 | 97.05–98.1 | 0.15–0.35 | 1.2–1.55 | < 0.25 | < 0.05 | 0.37–0.45 | 0.18–0.3 |
Information on suppliers
Physical characteristics
| Temperature, °C | $$\rho$$, $$\frac{kg}{m^3}$$ |
|---|---|
| 20 | 7820 |
Mechanical properties at 20 °C
| Rolling | Standard | Size, mm | Tension | Classifiers | $$\sigma _{U}$$, $$MPa$$ | $$\psi$$, % | d5, % | Treatment |
|---|---|---|---|---|---|---|---|---|
| Rental hot rolled. | GOST 1414-75 | hot rolling | 590 | 20 | 14 | |||
| Rental calibrated. | GOST 1414-75 | annealing | 590 | 17 | Annealing |
Brinell hardness number
| Rolling | Standard | Classifiers | Value, HBW |
|---|---|---|---|
| Rental hot rolled. | GOST 1414-75 | hot rolling | 207 |
| Rental calibrated. | GOST 1414-75 | annealing, calibrated | 229 |
Technological Properties
| Flake Susceptibility | Propensity to temper brittleness |
|---|---|
| sensitive | inclined |
Critical point temperatures
| Ac1, K | Ac3(Acm), K |
|---|---|
| 730 | 830 |
Analogues
| USA | Germany | European Union | Bulgaria |
|---|---|---|---|
| G11460 | 44SMn28 | 1.0762 | A45 |
Standards
| Standard | Description |
|---|---|
| GOST 1414-75 |
Description of chemical elements
| Element | Units of measurement | Description |
|---|---|---|
| Fe | % | Iron |
| Si | % | Silicon |
| Mn | % | Manganese |
| Cu | % | Copper |
| 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 |
| $$\psi$$ | % | Reduction in cross section on fracture |
Description of temperatures of critical points
| Parameter | Units of measurement | Description |
|---|---|---|
| Ac1 | K | |
| Ac3(Acm) | K |