Properties
General
| Property | Value |
|---|---|
Density | 7.7 g/cm³ Show Supplier Material materials with Density of 7.7 g/cm³ |
Dimension
| Property | Value | Comment |
|---|---|---|
Diameter | 160 mm Show Supplier Material materials with Diameter of 160 mm | max. |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Charpy impact energy, V-notch | 20 J Show Supplier Material materials with Charpy impact energy, V-notch of 20 J | ||
Elastic modulus | 20 °C | 215 GPa Show Supplier Material materials with Elastic modulus of 215 GPa | |
100 °C | 212 GPa Show Supplier Material materials with Elastic modulus of 212 GPa | ||
200 °C | 205 GPa Show Supplier Material materials with Elastic modulus of 205 GPa | ||
300 °C | 200 GPa Show Supplier Material materials with Elastic modulus of 200 GPa | ||
400 °C | 190 GPa Show Supplier Material materials with Elastic modulus of 190 GPa | ||
Elongation | 12 % Show Supplier Material materials with Elongation of 12 % | A5 | |
Hardness, Brinell | 321 [-] Show Supplier Material materials with Hardness, Brinell of 321 [-] | ||
Tensile strength | 800 - 950 MPa Show Supplier Material materials with Tensile strength of 800 - 950 MPa | ||
Yield strength | 20 °C | 600 MPa Show Supplier Material materials with Yield strength of 600 MPa | RP02 |
100 °C | 515 MPa Show Supplier Material materials with Yield strength of 515 MPa | RP02 | |
150 °C | 495 MPa Show Supplier Material materials with Yield strength of 495 MPa | RP02 | |
200 °C | 475 MPa Show Supplier Material materials with Yield strength of 475 MPa | RP02 | |
250 °C | 460 MPa Show Supplier Material materials with Yield strength of 460 MPa | RP02 | |
300 °C | 440 MPa Show Supplier Material materials with Yield strength of 440 MPa | RP02 | |
350 °C | 405 MPa Show Supplier Material materials with Yield strength of 405 MPa | RP02 | |
400 °C | 355 MPa Show Supplier Material materials with Yield strength of 355 MPa | RP02 |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 100 °C | 1e-05 1/K Show Supplier Material materials with Coefficient of thermal expansion of 1e-05 1/K | for 20°C to the mentioned temperature |
200 °C | 1.05e-05 1/K Show Supplier Material materials with Coefficient of thermal expansion of 1.05e-05 1/K | for 20°C to the mentioned temperature | |
300 °C | 1.05e-05 1/K Show Supplier Material materials with Coefficient of thermal expansion of 1.05e-05 1/K | for 20°C to the mentioned temperature | |
400 °C | 1.05e-05 1/K Show Supplier Material materials with Coefficient of thermal expansion of 1.05e-05 1/K | for 20°C to the mentioned temperature | |
Specific heat capacity | 460 J/(kg·K) Show Supplier Material materials with Specific heat capacity of 460 J/(kg·K) | ||
Thermal conductivity | 25 W/(m·K) Show Supplier Material materials with Thermal conductivity of 25 W/(m·K) |
Electrical
| Property | Value |
|---|---|
Electrical resistivity | 7e-07 Ω·m Show Supplier Material materials with Electrical resistivity of 7e-07 Ω·m |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.12 - 0.2 % Show Supplier Material materials with Carbon of 0.12 - 0.2 % |
Chromium | 15 - 17 % Show Supplier Material materials with Chromium of 15 - 17 % |
Iron | Balance |
Manganese | 1 % Show Supplier Material materials with Manganese of 1 % |
Nickel | 1.25 - 2.5 % Show Supplier Material materials with Nickel of 1.25 - 2.5 % |
Phosphorus | 0.04 % Show Supplier Material materials with Phosphorus of 0.04 % |
Silicon | 1 % Show Supplier Material materials with Silicon of 1 % |
Sulfur | 0.03 % Show Supplier Material materials with Sulfur of 0.03 % |
Technological properties
| Property | ||
|---|---|---|
| Application areas | Automotive industry, Chemical industry, Aerospace industry, Petrochemical industry, Mechanical engineering | |
| Corrosion properties | Good - The formation of chromium carbides and the associated chromium depleted regions that form around these precipitates make this grade of steel susceptible to intergranular corrosion. Surface condition plays an important role in the corrosion resistance of this steel with polished surfaces exhibiting far superior corrosion resistance compared with rougher surfaces on the same material. PRE = 17.5 – 21.26 | |
| General machinability | Poor - The machinability of this grade of stainless steel is directly related to its hardness. 1.4057 machines similar to carbon steels of the same hardness. Although it must be realised that the machining parameters will vary depending on the structure/hardness of the stee | |
| Heat Treatment | 1.4057 can be hardened by holding at a temperature between 950 °C – 1060 °C followed by cooling in air or oil. The tempering temperature is dependent on the desired strength. Since this grade of steel is susceptible to 475 °C embrittlement, care must be taken to limit exposure to the temperature range 420 °C to 520 °C, both during fabrication and service. QT800 (tempered between 750 °C and 800 °C followed by a second tempering treatment between 650 °C and 700 °C) | |
| Hot forming | It is formable at 800-1100°C | |
| Processing history | Quenched and tempered QT 800 | |
| Welding | Good - When welding 1.4057 with a matching filler, the work piece is usually heated to a temperature of between 100 °C and 300 °C prior to welding and is tempered as soon as possible after welding to restore some ductility to the weld zone. For optimal properties, the entire work piece should be re-heat treated. When the mechanical properties are not of primary concern, then Novonit® 4430 or 4370 can be used as the filler material. When these two fillers are used, pre-heating of the work piece is not required. Care must be taken to ensure that no nitrogen or carbon containing gasses are used for the shielding gas since this can adversely affect the properties of the weldment. To ensure adequate corrosion resistance of the weldment, any spatter or heat tint must be removed. | |