EI388 (40H15N7G7F2MS)
Classification
| Country | Section | Category |
|---|---|---|
| CIS, Russia, Ukraine | Corrosion-resistant alloys and steels | Corrosion-resistant alloys |
Chemical composition
| Standard | Fe, % | Si, % | Mn, % | Cr, % | Ti, % | Ni, % | V, % | P, % | C, % | S, % | Mo, % | W, % |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GOST 5632-14 | 62.825–70.57 | 0.9–1.4 | 6–8 | 14–16 | < 0.2 | 6–8 | 1.5–1.9 | < 0.035 | 0.38–0.47 | < 0.02 | 0.65–0.95 | < 0.2 |
Note: Electroslag remelting (-Sh): S <0.015
Note: Nuclear industry: Cu <0.30
Information on suppliers
Properties
| Property |
|---|
| Performance data Application temperature: <650 ° C Scaling temperature: 800 ° C |
| According to GOST 5949 Note. The norms of mechanical properties apply to samples taken from steel with a diameter or thickness of up to 60 mm. |
| For steel with a diameter or thickness of st. 60 to 100mm reduction of elongation by 1abs.% Is allowed |
| relative narrowing by 5abs.% and impact strength by 4.9 J / cm2 at a rate of less than 78.4 J / cm2 and by 9.8 J / cm2 at a rate of 78.4 J / cm2 or more. |
| For steel with a diameter or thickness of st. 100 to 150mm, a reduction in elongation of 3abs.% Is allowed, |
| a relative narrowing of 10 abs.% and impact strength of 9.8 J / cm2 at a rate of less than 78.4 J / cm2 and at 14.7 J / cm2 at a rate of 78.4 J / cm2 or more. |
| Quenching 1170 - 1190 ° C, cooling in water or in air Aging 780 - 820 ° C, holding 8 - 10 hours, cooling in air |
| Yield strength:> 590 MPa Tensile strength:> 880 MPa Elongation:> 15% Impact strength KCU at 20 ° C:> 29 J / cm2 Relative narrowing:> 15% |
| By agreement M1 (tests at elevated temperature) Note By agreement |
| M2 (long-term strength test) Note Quenching 1170 - 1190 ° С, holding 30 - 45 min., Cooling in water or in air Aging 790 - 810 ° С, holding 8 - 10 hours, cooling in air |
| M2 (long-term strength test) Temperature: 800 ° C; Ultimate Strength for 75h:> 137 MPa |
| Calculated Properties Density: 7.72 g / cm3 |
| Note Austenitic steel Fasteners Gas turbine blades Heat resistant steel |
Standards
| Standard | Description |
|---|---|
| GOST 5632-14 | |
| GOST 5632-72 | |
| GOST 5949-18 |
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 |
| W | % | Tungsten |