SHH15 (ShH15-V, SHH15-SH)
For the manufacture of parts of ball and roller bearings, bushings plungers, plungers, heating valves, housings and diffusers. parts, the tubular billet.
SHH15 produced in an acid open-hearth furnaces, SHH15-sh produced by electroslag remelting, SHH15-V smelted in electric arc furnaces with pumping.
Substitute: SHH9, SHH12, SHH15SG
Balls with a diameter of 150 mm, roller diameter up to 23 mm, the ring bearing with a wall thickness up to 14 mm, bushings plungers, plungers, pressure valves, body sprays, roller lifters and other parts that demand high hardness, wear resistance and contact strength.
Classification
| Country | Section | Category |
|---|---|---|
| CIS, Russia, Ukraine | Structural steel | Bearing structural steel |
Chemical composition
| Standard | Fe, % | Si, % | Mn, % | Cr, % | Ti, % | Cu, % | Ni, % | P, % | C, % | S, % | O, % |
|---|---|---|---|---|---|---|---|---|---|---|---|
| GOST 801-78 | > 95.9215 | 0.17–0.37 | 0.2–0.4 | 1.3–1.65 | < 0.01 | < 0.25 | < 0.3 | < 0.027 | 0.95–1.05 | < 0.02 | < 0.0015 |
Information on suppliers
Physical characteristics
| Temperature, °C | $$E\cdot 10^{9}$$, $$MPa$$ | $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ | $$\varkappa$$, $$\frac{W}{m\cdot K}$$ | $$\rho$$, $$\frac{kg}{m^3}$$ | $$R\cdot 10^{-6}$$, $$\Omega\cdot m$$ |
|---|---|---|---|---|---|
| 20 | 2.11 | 7812 | |||
| 100 | 11.9 | 7790 | 390 | ||
| 200 | 15.1 | 40 | 7750 | 470 | |
| 300 | 15.5 | 7720 | 520 | ||
| 400 | 15.6 | 37 | 7680 | ||
| 500 | 15.7 | 32 | 7640 |
Mechanical properties at 20 °C
| Rolling | Standard | Size, mm | Tension | Classifiers | $$\sigma _{U}$$, $$MPa$$ | $$\sigma_{P}$$, $$MPa$$ | $$\psi$$, % | $$KCU\cdot 10^{3}$$, $$\frac{J}{m^2}$$ | d5, % | Treatment |
|---|---|---|---|---|---|---|---|---|---|---|
| Steel | GOST 801-78 | annealing | 590–730 | 370–410 | 45 | 440 | 20 | Annealing 800 ° C, oven 15 ° C / h |
Brinell hardness number
| Rolling | Standard | Classifiers | Value, HBW |
|---|---|---|---|
| Alloy | GOST 801-78 | 179–207 |
Technological Properties
| Flake Susceptibility | Propensity to temper brittleness |
|---|---|
| sensitive | inclined |
Critical point temperatures
| Ac1, K | Ac3(Acm), K | Ar3(Arcm), K | Ar1, K | Mn, K |
|---|---|---|---|---|
| 724 | 900 | 713 | 700 | 210 |
Analogues
| USA | European Union | Germany |
|---|---|---|
| J19965 | 1.2067 | 1.3505 |
Standards
| Standard | Description |
|---|---|
| GOST 801-78 |
Description of chemical elements
| Element | Units of measurement | Description |
|---|---|---|
| Fe | % | Iron |
| Si | % | Silicon |
| Mn | % | Manganese |
| Cr | % | Chrome |
| Ti | % | Titan |
| Cu | % | Copper |
| Ni | % | Nickel |
| P | % | Phosphorus |
| C | % | Carbon |
| S | % | Sulfur |
| O | % | Oxygen |
Description of physical characteristics
| 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 |
Description of mechanical properties
| Parameter | Units of measurement | Description |
|---|---|---|
| d5 | % | Elongation at break |
| $$\sigma _{U}$$ | $$MPa$$ | Ultimate tensile strength |
| $$\sigma_{P}$$ | $$MPa$$ | Proportionality limit |
| $$\psi$$ | % | Reduction in cross section on fracture |
| $$KCU\cdot 10^{3}$$ | $$\frac{J}{m^2}$$ | Impact toughness |
Description of temperatures of critical points
| Parameter | Units of measurement | Description |
|---|---|---|
| Ac1 | K | |
| Ac3(Acm) | K | |
| Ar3(Arcm) | K | |
| Ar1 | K | |
| Mn | K |