20H20N14S2 (EI211, Х20Н14С2)
With increased mechanical loads: sheets, bearing parts and pipes in the construction of furnaces and instrument-making, for air heaters, annealing caps, grouting and hardening, annealing pots, etc. up to 1000 hail.
furnace conveyor boxes for carburizing and other details of heat treatment furnaces.
Classification
| Country | Section | Category |
|---|---|---|
| CIS, Russia, Ukraine | Heat resistant steels and alloys | Heat resistant high alloy steel |
Chemical composition
| Standard | Fe, % | Si, % | Mn, % | Cr, % | Ti, % | Cu, % | Ni, % | P, % | C, % | S, % |
|---|---|---|---|---|---|---|---|---|---|---|
| GOST 5632-72 | 57.74–67 | 2–3 | < 1.5 | 19–22 | < 0.2 | < 0.3 | 12–15 | < 0.035 | < 0.2 | < 0.025 |
Information on suppliers
Physical characteristics
| Temperature, °C | $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ | $$\varkappa$$, $$\frac{W}{m\cdot K}$$ | $$\rho$$, $$\frac{kg}{m^3}$$ | $$R\cdot 10^{-6}$$, $$\Omega\cdot m$$ |
|---|---|---|---|---|
| 20 | 7800 | 0.946 | ||
| 100 | 16 | 15 | 7760 | 1 |
| 200 | 17 | 1.051 | ||
| 300 | 18 | 1.095 | ||
| 400 | 19 | 1.13 | ||
| 500 | 21 | 1.1 | ||
| 600 | 18.1 | 23 | 7550 | 1.194 |
| 700 | 18.3 | 24 | 7510 | 1.218 |
| 800 | 18.5 | 26 | 7470 | 1.242 |
| 900 | 18.8 | 28 | 7420 | 1.242 |
| 1000 | 19 |
Mechanical properties at 20 °C
| Rolling | Standard | Size, mm | Tension | Classifiers | $$\sigma _{U}$$, $$MPa$$ | $$\sigma_{P}$$, $$MPa$$ | $$\epsilon_L$$, % | $$\psi$$, % | Treatment |
|---|---|---|---|---|---|---|---|---|---|
| Rod | GOST 5949-75 | 60 | 590 | 295 | 35 | 55 | Hardening of 1000-1150 ° C, air | ||
| Sheet | GOST 5582-75 | 590 | 40 |
Analogues
| Germany | USA |
|---|---|
| 1.4828 | 309 |
Standards
| Standard | Description |
|---|---|
| GOST 5632-72 | |
| GOST 5949-75 | |
| GOST 5582-75 | |
| GOST 1133-71 |
Description of chemical elements
| Element | Units of measurement | Description |
|---|---|---|
| Fe | % | Iron |
| Si | % | Silicon |
| Mn | % | Manganese |
| Cr | % | Chrome |
| Ti | % | Titan |
| Cu | % | Copper |
| Ni | % | Nickel |
| P | % | Phosphorus |
| C | % | Carbon |
| S | % | Sulfur |
Description of physical characteristics
| Parameter | Units of measurement | Description |
|---|---|---|
| $$\alpha\cdot 10^{6}$$ | $$K^{-1}$$ | Coefficient of thermal (linear) expansion (range 20°C–T) |
| $$\varkappa$$ | $$\frac{W}{m\cdot K}$$ | Coefficient of thermal conductivity (the heat capacity of the material) |
| $$\rho$$ | $$\frac{kg}{m^3}$$ | The density of the material |
| $$R\cdot 10^{-6}$$ | $$\Omega\cdot m$$ | Electrical resistivity |
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) |
| $$\psi$$ | % | Reduction in cross section on fracture |