EI415A (20XH3MVFA)
Classification
| Country | Section | Category |
|---|---|---|
| CIS, Russia, Ukraine | Corrosion-resistant alloys and steels | Corrosion-resistant alloys |
Chemical composition
| Standard | Fe, % | Si, % | Mn, % | Cr, % | Cu, % | Ni, % | V, % | P, % | C, % | S, % | Mo, % | W, % |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OST 108.020.109-82 | 92.763–95.93 | < 0.4 | 0.25–0.6 | 2.4–3.3 | < 0.25 | < 0.5 | 0.6–0.85 | < 0.025 | 0.17–0.24 | < 0.022 | 0.35–0.55 | 0.3–0.5 |
Note: For turbines of a primary circuit NPP: Co <0.05
Information on suppliers
Properties
| Property |
|---|
| According to TU 108.1029-81 Category III Note Tempering with vacation |
| According to TU 108.1029-81 Longitudinal samples Note Shaft |
| According to TU 108.1029-81 Longitudinal samples Yield strength: 589 - 736 MPa Tensile strength:> 736 MPa Elongation:> 13% |
| According to TU 108.1029-81 Longitudinal samples Impact strength KCU at 20 ° C:> 49 J / cm2 Relative narrowing:> 40% Bending angle: 150 ° |
| According to TU 108.1029-81 Tangential samples Note Rotor barrel |
| According to TU 108.1029-81 Tangential samples Yield strength: 589 - 736 MPa Tensile strength:> 716 MPa Elongation:> 11% |
| According to TU 108.1029-81 Tangential samples Impact strength KCU at 20 ° C:> 39 J / cm2 Relative narrowing:> 32% Bending angle: 120 ° |
| Weldability By NAKS Group: M03 (W03) |
| Physical properties Elastic modulus (Young's modulus): 204 GPa Density: 7.79 g / cm3 Linear expansion coefficient: 9.8 - 15.0 (10 ^ 6) / ° С Thermal conductivity at 300 ° C: 29.26 W / m * K |
| Physical properties Thermal conductivity at 200 ° C: 30.932 W / m * K Thermal conductivity at 100 ° C: 31.768 W / m * K Thermal conductivity at 400 ° C: 28 W / m * K Thermal conductivity at 500 ° C: 27.17 W / m * K |
| Physical properties Thermal conductivity at 600 ° C: 25.916 W / m * K Thermal conductivity at 700 ° C: 25.08 W / m * K |
| Tests at elevated temperature According to OST 108.020.109-82 Temperature: 200 ° C; Yield Strength:> 542 MPa |
| Tests at elevated temperature According to OST 108.020.109-82 Temperature: 400 ° C; Yield Strength:> 473 MPa |
| Tests at elevated temperature According to OST 108.020.109-82 Temperature: 500 ° C; Yield strength:> 443 MPa; Long-term tensile strength per 100,000 h: 207 - 266 MPa |
| Tests at elevated temperature According to OST 108.020.109-82 Temperature: 500 ° C The creep limit corresponding to 1% of the total deformation per 100000 h: 118 - 167 MPa |
| Tests at elevated temperature According to OST 108.020.109-82 Temperature: 550 ° C; Yield strength:> 394 MPa; Long-term tensile strength per 100,000 h: 148 - 158 MPa |
| Tests at elevated temperature According to OST 108.020.109-82 Temperature: 550 ° C The creep limit corresponding to 1% of the total deformation per 100000 h: 89 - 108 MPa |
| Tests at elevated temperature According to OST 108.020.109-82 Temperature: 600 ° C; Yield Strength:> 345 MPa |
Analogues
| Germany | USA |
|---|---|
| 1.7707 (30CrMoV9) | K24065 |
Standards
| Standard | Description |
|---|---|
| OST 108.961.05-80 | |
| OST 108.020.109-82 | |
| OST 108.961.05-80 / 87 ВД | |
| TU 108.1028-81 |
Description of chemical elements
| Element | Units of measurement | Description |
|---|---|---|
| Fe | % | Iron |
| Si | % | Silicon |
| Mn | % | Manganese |
| Cr | % | Chrome |
| Cu | % | Copper |
| Ni | % | Nickel |
| V | % | Vanadium |
| P | % | Phosphorus |
| C | % | Carbon |
| S | % | Sulfur |
| Mo | % | Molybdenum |
| W | % | Tungsten |