10H11N23T3MR (EP33, X12N22T3MR)
Springs and fastener parts
springs and fasteners with a limited period of work at temperatures up to 700 ° C; austenitic steel
Classification
| Country | Section | Category |
|---|---|---|
| CIS, Russia, Ukraine | Heat resistant steels and alloys | Heat resistant high alloy steel |
Chemical composition
| Standard | Fe, % | Si, % | B, % | Mn, % | Cr, % | Ti, % | Ni, % | Al, % | P, % | C, % | S, % | Mo, % |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GOST 5632-72 | 55.545–65.4 | < 0.6 | < 0.02 | < 0.6 | 10–12.5 | 2.6–3.2 | 21–25 | < 0.8 | < 0.025 | < 0.1 | < 0.01 | 1–1.6 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Rod | GOST 5949-75 | 880–980 | 590–685 | 8–10 | 10–12 | 290 | Quenching and aging |
Standards
Description of chemical elements
| Element | Units of measurement | Description |
|---|---|---|
| Fe | % | Iron |
| Si | % | Silicon |
| B | % | Bor |
| Mn | % | Manganese |
| Cr | % | Chrome |
| Ti | % | Titan |
| Ni | % | Nickel |
| Al | % | Aluminium |
| P | % | Phosphorus |
| C | % | Carbon |
| S | % | Sulfur |
| Mo | % | Molybdenum |
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 |