15HF (15HFA)
For parts operating at temperatures from -40 to 560 C under pressure.
For medium-sized parts subjected to carburizing and hardening with low release (gears, piston pins, distribution rollers, plungers, copiers)
For parts operating at temperatures from -40 to 560 C under pressure.
For medium-sized parts subjected to carburizing and hardening with low release (gears, piston pins, distribution rollers, plungers, copiers)
Standard | Fe, % | Si, % | Mn, % | Cr, % | Cu, % | Ni, % | V, % | P, % | C, % | S, % |
---|---|---|---|---|---|---|---|---|---|---|
Standard | Fe, % | Si, % | Mn, % | Cr, % | Cu, % | Ni, % | V, % | P, % | C, % | S, % |
GOST 4543-71 | 96.86–98.45 | 0.17–0.37 | 0.4–0.7 | 0.8–1.1 | < 0.3 | < 0.3 | 0.06–0.12 | < 0.035 | 0.12–0.18 | < 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} | 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} | R\cdot 10^{-6}, \Omega\cdot m |
20 | 206 | 7760 | |||
100 | 11.9 | 43 | 7730 | 0.281 | |
200 | 12.4 | 42 | 7710 | 0.345 | |
300 | 13.1 | 42 | 7670 | 0.421 | |
400 | 13.7 | 40 | 7640 | 0.513 | |
500 | 14.2 | 36 | 7600 | 0.606 | |
600 | 14.5 | 34 | 7570 | 0.731 | |
700 | 14.9 | 30 | 7530 | 0.833 |
Rolling | Standard | Size, mm | Tension | Classifiers | \sigma _{U}, MPa | \sigma_{P}, MPa | \epsilon_L, % | \psi, % | KCU\cdot 10^{3}, \frac{J}{m^2} | Treatment |
---|---|---|---|---|---|---|---|---|---|---|
Rolling | Standard | Size, mm | Tension | Classifiers | \sigma _{U}, MPa | \sigma_{P}, MPa | \epsilon_L, % | \psi, % | KCU\cdot 10^{3}, \frac{J}{m^2} | Treatment |
Rod | GOST 4543-71 | 15 | 740 | 540 | 13 | 50 | 780 | delivery condition |
Rolling | Standard | Classifiers | Value, HBW |
---|---|---|---|
Rolling | Standard | Classifiers | Value, HBW |
Alloy | GOST 4543-71 | annealing | 1870 |
Alloy | GOST 4543-71 | cold-work | 217 |
The bar is hot rolled. | GOST 10702-78 | 1630 |
Standard | Description |
---|---|
Standard | Description |
GOST 4543-71 |
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 |
R\cdot 10^{-6} | \Omega\cdot m | Electrical resistivity |
Parameter | Units of measurement | Description |
---|---|---|
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 |
KCU\cdot 10^{3} | \frac{J}{m^2} | Impact toughness |
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 |