12GS (Sv-12GS, 12G2A, 14G2A, 15GS)
The steel alloyed silvery-manganic.
Conductivity of steam pipes of high pressure; Car parts, manufactured by drawing, forging, stamping.
Classification
| Country | Section | Category |
|---|---|---|
| CIS, Russia, Ukraine | Structural steel | Low alloy structural steel for welded structures |
Chemical composition
| Standard | Fe, % | Si, % | Mn, % | Cr, % | Cu, % | Ni, % | As, % | P, % | C, % | S, % | N, % |
|---|---|---|---|---|---|---|---|---|---|---|---|
| GOST 19281-89 | 96.787–98.61 | 0.5–0.8 | 0.8–1.2 | < 0.3 | < 0.3 | < 0.3 | < 0.08 | < 0.035 | 0.09–0.15 | < 0.04 | < 0.008 |
Information on suppliers
Mechanical properties at 20 °C
| Rolling | Standard | Size, mm | Tension | Classifiers | $$\sigma _{U}$$, $$MPa$$ | $$\sigma_{P}$$, $$MPa$$ | $$\epsilon_L$$, % | Treatment |
|---|---|---|---|---|---|---|---|---|
| Sheet | GOST 19281-2014 | < 60 | 450 | 3315 | 26 | |||
| Sheet | GOST 19282-73 | 4 | 470 | 320 | 26 |
Technological Properties
| Weldability | Flake Susceptibility | Propensity to temper brittleness |
|---|---|---|
| no limits | not sensitive | not inclined |
Analogues
| Germany |
|---|
| 1.5112 (10MnSi5) |
Standards
| Standard | Description |
|---|---|
| GOST 19281-89 |
Description of chemical elements
| Element | Units of measurement | Description |
|---|---|---|
| Fe | % | Iron |
| Si | % | Silicon |
| Mn | % | Manganese |
| Cr | % | Chrome |
| Cu | % | Copper |
| Ni | % | Nickel |
| As | % | Arsenic |
| P | % | Phosphorus |
| C | % | Carbon |
| S | % | Sulfur |
| N | % | Nitrogen |
Description of mechanical properties
| Parameter | Units of measurement | Description |
|---|---|---|
| $$\sigma _{U}$$ | $$MPa$$ | Ultimate tensile strength |
| $$\sigma_{P}$$ | $$MPa$$ | Proportionality limit |
| $$\epsilon_L$$ | % | Elongation at break (longitudinal) |
Designation of types of weldability
| Parameter | Units of measurement | Description |
|---|---|---|
| no limits | Welding is performed without heating and without subsequent heat treatment | |
| Boundedly welded | Welding is possible with heating up to 100–120 °C and subsequent heat treatment | |
| Difficult to weld | For obtaining quality welded joints, additional operations are required: heating up to 200–300 °C for welding, heat treatment after welding — annealing | |
| Not applicable for welded structures |