22K
bottoms, flanges, welded one-piece drums and steam boilers. half couplings, pipes and other parts operating at temperatures from -40 to 450 ° C under pressure.
bottoms, flanges, welded one-piece drums and steam boilers. half couplings, pipes and other parts operating at temperatures from -40 to 450 ° C under pressure.
Standard | Fe, % | Si, % | Mn, % | Cr, % | Cu, % | Ni, % | P, % | C, % | S, % |
---|---|---|---|---|---|---|---|---|---|
Standard | Fe, % | Si, % | Mn, % | Cr, % | Cu, % | Ni, % | P, % | C, % | S, % |
GOST 5520-79 | 97.365–98.94 | 0.17–0.4 | 0.7–1 | < 0.3 | < 0.3 | < 0.3 | < 0.04 | 0.19–0.26 | < 0.035 |
Temperature, °C | E\cdot 10^{9}, MPa | \alpha\cdot 10^{6}, K^{-1} | \varkappa, \frac{W}{m\cdot K} | \rho, \frac{kg}{m^3} | c\cdot 10^{-3}, \frac{J}{kg\cdot K} | R\cdot 10^{-6}, \Omega\cdot m |
---|---|---|---|---|---|---|
Temperature, °C | E\cdot 10^{9}, MPa | \alpha\cdot 10^{6}, K^{-1} | \varkappa, \frac{W}{m\cdot K} | \rho, \frac{kg}{m^3} | c\cdot 10^{-3}, \frac{J}{kg\cdot K} | R\cdot 10^{-6}, \Omega\cdot m |
20 | 211 | 51.7 | 7859 | 0.173 | ||
100 | 208 | 11.75 | 51 | 7834 | 0.47 | 0.219 |
200 | 205 | 12.2 | 48.5 | 7803 | 0.483 | 0.292 |
300 | 200 | 12.8 | 44.4 | 7770 | 0.381 | |
400 | 191 | 13.2 | 42.7 | 7736 | 0.525 | 0.487 |
500 | 180 | 13.5 | 39.3 | 7699 | 0.571 | 0.601 |
600 | 165 | 13.85 | 35.6 | 7659 | 0.758 | |
700 | 14.6 | 31.9 | 7617 | 0.925 | ||
800 | 12.7 | 25.9 | 7624 | 1.094 | ||
900 | 12.4 | 26.4 | 7600 | 1.135 | ||
1000 | 13.4 | 27.7 | 7548 | 1.167 | ||
1100 | 14.2 | 28.5 | 7496 | 1.194 | ||
1200 | 14.8 | 29.8 | 1.219 |
Rolling | Standard | Size, mm | Tension | Classifiers | \sigma _{U}, MPa | \sigma_{P}, MPa | \epsilon_L, % | KCU\cdot 10^{3}, \frac{J}{m^2} | Treatment |
---|---|---|---|---|---|---|---|---|---|
Rolling | Standard | Size, mm | Tension | Classifiers | \sigma _{U}, MPa | \sigma_{P}, MPa | \epsilon_L, % | KCU\cdot 10^{3}, \frac{J}{m^2} | Treatment |
Sheet | 60–90 | 440 | 600 | Normalization of 940-960 ° C, and Holidays 630-650 ° C, air cooling 65 ° C / h | |||||
Sheet | GOST 5520-79 | 430–590 | 255–265 | 22 | 590 |
USA | Germany |
---|---|
USA | Germany |
K02700 | 1.1133 (20Mn5) |
1.0257 (St44.4) |
Standard | Description |
---|---|
Standard | Description |
GOST 5520-79 |
Parameter | Units of measurement | Description |
---|---|---|
Parameter | Units of measurement | Description |
E\cdot 10^{9} | MPa | Elastic modulus |
\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 |
c\cdot 10^{-3} | \frac{J}{kg\cdot K} | The specific heat of the material (range 20°C–T) |
R\cdot 10^{-6} | \Omega\cdot m | Electrical resistivity |
Parameter | Units of measurement | Description |
---|---|---|
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 |