EP986
Classification
| Country | Section | Category |
|---|---|---|
| CIS, Russia, Ukraine | Heat resistant steels and alloys | Heat resistant alloys |
Chemical composition
| Standard | Fe, % | Si, % | Mn, % | Cr, % | Ni, % | Al, % | P, % | C, % | S, % | Nb, % |
|---|---|---|---|---|---|---|---|---|---|---|
| 42.75–48.94 | < 0.7 | < 0.7 | 19–21 | 31–33 | 0.1–0.5 | < 0.03 | 0.06–0.1 | < 0.02 | 0.9–1.2 |
Information on suppliers
Physical characteristics
| Temperature, °C | $$E\cdot 10^{9}$$, $$MPa$$ | $$\varkappa$$, $$\frac{W}{m\cdot K}$$ | $$\rho$$, $$\frac{kg}{m^3}$$ | Cp, Дж/кг·К |
|---|---|---|---|---|
| 20 | 196 | 13.5 | 7950 | 456 |
Mechanical properties at 20 °C
| Rolling | Standard | Size, mm | Tension | Classifiers | $$\sigma _{U}$$, $$MPa$$ | $$\sigma_{Y}$$, $$MPa$$ | d5, % | Treatment |
|---|---|---|---|---|---|---|---|---|
| Sheet cold rolled. | GOST 5582-75 | 16 | Transverse | raw, warm rolling, fat, Transverse | 870–920 | 420–450 | 40–45 |
Magnetic properties
| Rolling | $$H_c$$, $$A/m$$ |
|---|---|
| Sheet | 1.646 |
Brinell hardness number
| Rolling | Standard | Classifiers | Value, HBW |
|---|---|---|---|
| Sheet | GOST 7350-77 | raw, warm rolling, fat, Transverse | 270–310 |
Technological Properties
| Weldability | Flake Susceptibility | Propensity to temper brittleness |
|---|---|---|
| no limits | not sensitive | loathsome |
Description of chemical elements
| Element | Units of measurement | Description |
|---|---|---|
| Fe | % | Iron |
| Si | % | Silicon |
| Mn | % | Manganese |
| Cr | % | Chrome |
| Ni | % | Nickel |
| Al | % | Aluminium |
| P | % | Phosphorus |
| C | % | Carbon |
| S | % | Sulfur |
| Nb | % | Niobium |
Description of physical characteristics
| Parameter | Units of measurement | Description |
|---|---|---|
| Cp | Дж/кг·К | Specific heat of material |
| $$E\cdot 10^{9}$$ | $$MPa$$ | Elastic modulus |
| $$\varkappa$$ | $$\frac{W}{m\cdot K}$$ | Coefficient of thermal conductivity (the heat capacity of the material) |
| $$\rho$$ | $$\frac{kg}{m^3}$$ | The density of the material |
Description of mechanical properties
| Parameter | Units of measurement | Description |
|---|---|---|
| d5 | % | Elongation at break |
| $$\sigma_{Y}$$ | $$MPa$$ | Yield strength |
| $$\sigma _{U}$$ | $$MPa$$ | Ultimate tensile strength |
Description of magnetic properties
| Parameter | Units of measurement | Description |
|---|---|---|
| $$H_c$$ | $$A/m$$ | Magnetic coercivity (not more) |
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 |