AB (1340)
For the manufacture of helicopter blades, stamped and forged parts of complex configuration
Classification
Chemical composition
| Standard | Fe, % | Si, % | Mg, % | Mn, % | Cr, % | Ti, % | Cu, % | Zn, % | Al, % |
|---|---|---|---|---|---|---|---|---|---|
| Standard | Fe, % | Si, % | Mg, % | Mn, % | Cr, % | Ti, % | Cu, % | Zn, % | Al, % |
| GOST 4784-97 | < 0.5 | 0.5–1.2 | 0.45–0.9 | 0.15–0.35 | < 0.25 | < 0.15 | 0.1–0.5 | < 0.2 | 96.1–98.8 |
Information on suppliers
Physical characteristics
| 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 | 71 | 2700 | 0.037 | |||
| 100 | 23.5 | 180 | 0.797 |
Mechanical properties at 20 °C
| Rolling | Standard | Size, mm | Tension | Classifiers | $$\sigma _{U}$$, $$MPa$$ | $$\sigma_{P}$$, $$MPa$$ | $$\epsilon_L$$, % | Treatment |
|---|---|---|---|---|---|---|---|---|
| Rolling | Standard | Size, mm | Tension | Classifiers | $$\sigma _{U}$$, $$MPa$$ | $$\sigma_{P}$$, $$MPa$$ | $$\epsilon_L$$, % | Treatment |
| Trumpet | 310 | 225 | 8 | |||||
| Trumpet | 210 | 110 | 14 | |||||
| Round | increased plasticity | 295–315 | 225 | 12–14 | ||||
| Round | high strength | 335 | 245 | 8 | ||||
| Round | GOST 21488-97 | 295 | 225 | 12 | ||||
| Round | GOST 21488-97 | 175 | 100 | 14 | ||||
| Tape | annealing | 145 | 15 | |||||
| Profile | 176 | 14 | ||||||
| Profile | < 50 | 294 | 225 | 10 | ||||
| Sheet | 275–295 | 6–7 | ||||||
| Sheet | 165–175 | 10–14 |
Brinell hardness number
Analogues
Standards
| Standard | Description |
|---|---|
| Standard | Description |
| GOST 4784-97 |
Description of chemical elements
Description of physical characteristics
| 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 |