12H25N5TMFL (10H25N5TMFL)
for the reinforcement of the chemical industry, aircraft parts and other industries, heat resistant at temperatures up to 600 degrees C, and components operating under pressure up to 30 MPa; steel austenitic — ferritic class
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, % | Ti, % | Ni, % | V, % | P, % | C, % | S, % | Mo, % | N, % |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GOST 977-88 | 64.85–70.71 | 0.2–1 | 0.3–0.8 | 23.5–26 | 0.08–0.2 | 5–6.5 | 0.07–0.15 | < 0.03 | < 0.12 | < 0.03 | 0.06–0.12 | 0.08–0.2 |
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 | 540 | 392 | 12 | 40 | 294 | Hardening 1150 ° C, cooling of 980 ° C, the furnace |
Wärmebehandlungsmodi
| Verarbeitung |
|---|
| Aushärten 1140 - 1160 ° C, Abkühlen im Ofen 970 - 990 ° C, Abkühlen in Öl |
Analogues
| USA | Germany |
|---|---|
| J92740 | 1.446 (X3CrNiMoN27-5-2) |
Standards
| Standard | Description |
|---|---|
| GOST 977-88 |
Description of chemical elements
| Element | Units of measurement | Description |
|---|---|---|
| Fe | % | Iron |
| Si | % | Silicon |
| Mn | % | Manganese |
| Cr | % | Chrome |
| Ti | % | Titan |
| Ni | % | Nickel |
| V | % | Vanadium |
| P | % | Phosphorus |
| C | % | Carbon |
| S | % | Sulfur |
| Mo | % | Molybdenum |
| N | % | Nitrogen |
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 |