30HGS (30KhGSA)
Various improves the detail: shafts, axles, gears, brake bands engines, flanges, shell plating, the blades of compressor machines, levers, tappets responsible welded structures operating at alternating loads fasteners.
Various improves the detail: shafts, axles, gears, brake bands engines, flanges, shell plating, the blades of compressor machines, levers, tappets responsible welded structures operating at alternating loads fasteners.
Standard | Fe, % | Si, % | Mn, % | Cr, % | Cu, % | Ni, % | P, % | C, % | S, % |
---|---|---|---|---|---|---|---|---|---|
GOST 4543-71 | 95.58–97.22 | 0.9–1.2 | 0.8–1.1 | 0.8–1.1 | < 0.3 | < 0.3 | < 0.035 | 0.28–0.35 | < 0.035 |
Temperature, °C | $$E\cdot 10^{9}$$, $$MPa$$ | $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ | $$\varkappa$$, $$\frac{W}{m\cdot K}$$ | $$\rho$$, $$\frac{kg}{m^3}$$ | $$c\cdot 10^{-3}$$, $$\frac{J}{kg\cdot K}$$ | $$R\cdot 10^{-6}$$, $$\Omega\cdot m$$ |
---|---|---|---|---|---|---|
20 | 194 | 7850 | 0.21 | |||
100 | 185 | 12 | 37 | 7830 | 0.493 | |
200 | 173 | 12.5 | 41 | 7800 | 0.504 | |
300 | 169 | 12.9 | 38 | 7760 | 0.512 | |
400 | 166 | 13.2 | 37 | 7730 | 0.533 | |
500 | 156 | 13.6 | 36 | 7700 | 0.554 | |
600 | 13.9 | 35 | 7670 | 0.584 | ||
700 | 34 | 0.622 | ||||
800 | 32 | 0.693 |
Rolling | Standard | Size, mm | Tension | Classifiers | $$\sigma _{U}$$, $$MPa$$ | $$\sigma_{P}$$, $$MPa$$ | $$\epsilon_L$$, % | $$\psi$$, % | $$KCU\cdot 10^{3}$$, $$\frac{J}{m^2}$$ | Treatment |
---|---|---|---|---|---|---|---|---|---|---|
Sheet annealed. | 500–750 | 14 | ||||||||
Rod | GOST 4543-71 | 25 | 1080 | 835 | 10 | 45 | 440 | Tempering 880 ° C, oil, leave 540 ° C, the water | ||
Steel | 40 | 930 | 820 | 12 | 51 | 690 | Tempering 880 ° C, oil, leave 600 ° C, the water | |||
Steel | 80 | 860 | 730 | 14 | 50 | 780 | Tempering 880 ° C, oil, leave 600 ° C, the water |
Rolling | Standard | Classifiers | Value, HBW |
---|---|---|---|
Alloy | GOST 4543-71 | annealing | 229 |
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) |
$$R\cdot 10^{-6}$$ | $$\Omega\cdot m$$ | Electrical resistivity |
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 |