12H18N12BL (10H18N12BL)
cast parts for power plants with long life at 600−650 degrees C and 700 degrees C during limited; austenitic steel, corrosion-resistant, heat-resistant up to 650 degrees C
Classification
| Country | Section | Category |
|---|---|---|
| CIS, Russia, Ukraine | Steels and alloys for castings | Steel for casting with special properties |
Chemical composition
| Standard | Fe, % | Si, % | Mn, % | Cr, % | Ni, % | P, % | C, % | S, % | Nb, % |
|---|---|---|---|---|---|---|---|---|---|
| GOST 977-88 | 65.185–70.8 | < 0.55 | 0.5–1 | 17–19 | 11–13 | < 0.02 | < 0.12 | < 0.025 | 0.7–1.1 |
Information on suppliers
Mechanical properties at 20 °C
| Rolling | Standard | Size, mm | Tension | Classifiers | $$\sigma _{U}$$, $$MPa$$ | $$\sigma_{P}$$, $$MPa$$ | $$\epsilon_L$$, % | $$\psi$$, % | $$KCU\cdot 10^{3}$$, $$\frac{J}{m^2}$$ | Treatment |
|---|---|---|---|---|---|---|---|---|---|---|
| Castings | GOST 977-88 | 392 | 196 | 13 | 18 | 196 | Hardening 1180 ° C, air cooling, Aging 800 ° C, 10 hours aging 750 ° C, 16 h |
Heat Treatment Modes
| Treatment |
|---|
| Hardening 1170 - 1190 ° C, air cooling. Aging 790 - 810 ° C, 10 h., Aging 740 - 760 ° C, 16 h., |
Analogues
| Germany | USA |
|---|---|
| F 1.4552 | CF8C |
Standards
| Standard | Description |
|---|---|
| GOST 977-88 |
Description of chemical elements
| Element | Units of measurement | Description |
|---|---|---|
| Fe | % | Iron |
| Si | % | Silicon |
| Mn | % | Manganese |
| Cr | % | Chrome |
| Ni | % | Nickel |
| P | % | Phosphorus |
| C | % | Carbon |
| S | % | Sulfur |
| Nb | % | Niobium |
Description of mechanical properties
| 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 |