38H2MJuA (38HMUA)
Azotiruemye parts: gears, rollers, fingers, bushings, etc., operating at temperatures up to 450 degrees.
Azotiruemye parts: gears, rollers, fingers, bushings, etc., operating at temperatures up to 450 degrees.
Standard | Fe, % | Si, % | Mn, % | Cr, % | Cu, % | Ni, % | Al, % | P, % | C, % | S, % | Mo, % |
---|---|---|---|---|---|---|---|---|---|---|---|
GOST 4543-71 | 94.88–96.95 | 0.2–0.45 | 0.3–0.6 | 1.35–1.65 | < 0.3 | < 0.3 | 0.7–1.1 | < 0.025 | 0.35–0.42 | < 0.025 | 0.15–0.25 |
Temperature, °C | $$E\cdot 10^{9}$$, $$MPa$$ | $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ | $$\varkappa$$, $$\frac{W}{m\cdot K}$$ | $$\rho$$, $$\frac{kg}{m^3}$$ | $$c\cdot 10^{-3}$$, $$\frac{J}{kg\cdot K}$$ |
---|---|---|---|---|---|
20 | 209 | 33 | 7710 | ||
100 | 202 | 11.5 | 33 | 0.496 | |
200 | 194 | 11.8 | 32 | 0.517 | |
300 | 190 | 12.7 | 31 | 0.533 | |
400 | 181 | 13.4 | 20 | 0.546 | |
500 | 174 | 13.9 | 20 | 0.575 | |
600 | 162 | 14.7 | 28 | 0.609 | |
700 | 147 | 14.9 | 27 | 0.638 | |
800 | 137 | 27 | 0.676 |
Rolling | Standard | Size, mm | Tension | Classifiers | $$\sigma _{U}$$, $$MPa$$ | $$\sigma_{P}$$, $$MPa$$ | $$\epsilon_L$$, % | $$\psi$$, % | $$KCU\cdot 10^{3}$$, $$\frac{J}{m^2}$$ | Treatment |
---|---|---|---|---|---|---|---|---|---|---|
Trumpet | 392 | 20 | ||||||||
Rod | GOST 4543-71 | 30 | 980 | 835 | 14 | 50 | 880 | Hardening and tempering |
Rolling | Standard | Classifiers | Value, HBW |
---|---|---|---|
Alloy | GOST 4543-71 | annealing | 229 |
Alloy | GOST 4543-71 | cold-work | 255 |
Standard | Description |
---|---|
GOST 4543-71 |
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) |
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 |