Properties
General
| Property | Value | Temperature |
|---|---|---|
Density | 7.8 g/cm³ Show Supplier Material materials with Density of 7.8 g/cm³ at 23.0 °C | 23.0 °C |
Dimension
| Property | Value | Comment |
|---|---|---|
Diameter | 160 mm Show Supplier Material materials with Diameter of 160 mm | max. |
Mechanical
| Property | Value | Temperature |
|---|---|---|
Charpy impact energy, V-notch | 100 J Show Supplier Material materials with Charpy impact energy, V-notch of 100 J at 23.0 °C | 23.0 °C |
Elastic modulus | 200 GPa Show Supplier Material materials with Elastic modulus of 200 GPa at 20.0 °C | 20.0 °C |
194 GPa Show Supplier Material materials with Elastic modulus of 194 GPa at 100.0 °C | 100.0 °C | |
186 GPa Show Supplier Material materials with Elastic modulus of 186 GPa at 200.0 °C | 200.0 °C | |
180 GPa Show Supplier Material materials with Elastic modulus of 180 GPa at 300.0 °C | 300.0 °C | |
Elongation A5 | 25 % Show Supplier Material materials with Elongation A5 of 25 % at 23.0 °C | 23.0 °C |
Hardness, Brinell | 270 [-] Show Supplier Material materials with Hardness, Brinell of 270 [-] at 23.0 °C | 23.0 °C |
Hardness, Rockwell C | 25 [-] Show Supplier Material materials with Hardness, Rockwell C of 25 [-] at 23.0 °C | 23.0 °C |
Tensile strength | 650 - 880 MPa Show Supplier Material materials with Tensile strength of 650 - 880 MPa at 23.0 °C | 23.0 °C |
Yield strength Rp0.2 | 450 MPa Show Supplier Material materials with Yield strength Rp0.2 of 450 MPa at 20.0 °C | 20.0 °C |
360 MPa Show Supplier Material materials with Yield strength Rp0.2 of 360 MPa at 150.0 °C | 150.0 °C | |
315 MPa Show Supplier Material materials with Yield strength Rp0.2 of 315 MPa at 200.0 °C | 200.0 °C | |
300 MPa Show Supplier Material materials with Yield strength Rp0.2 of 300 MPa at 250.0 °C | 250.0 °C | |
Thermal
| Property | Value | Temperature | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 1.3E-5 1/K Show Supplier Material materials with Coefficient of thermal expansion of 1.3E-5 1/K at 100.0 °C | 100.0 °C | for 20°C to the mentioned temperature |
1.35E-5 1/K Show Supplier Material materials with Coefficient of thermal expansion of 1.35E-5 1/K at 200.0 °C | 200.0 °C | for 20°C to the mentioned temperature | |
1.4E-5 1/K Show Supplier Material materials with Coefficient of thermal expansion of 1.4E-5 1/K at 300.0 °C | 300.0 °C | for 20°C to the mentioned temperature | |
Specific heat capacity | 500 J/(kg·K) Show Supplier Material materials with Specific heat capacity of 500 J/(kg·K) at 23.0 °C | 23.0 °C | |
Thermal conductivity | 15 W/(m·K) Show Supplier Material materials with Thermal conductivity of 15 W/(m·K) at 23.0 °C | 23.0 °C | |
Electrical
| Property | Value | Temperature |
|---|---|---|
Electrical resistivity | 7.8E-7 Ω·m Show Supplier Material materials with Electrical resistivity of 7.8E-7 Ω·m at 23.0 °C | 23.0 °C |
Chemical properties
| Property | ||
|---|---|---|
Carbon | 0.03 % | |
Chromium | 21 - 23 % | |
Iron | Balance | |
Manganese | 2 % | |
Molybdenum | 2.5 - 3.5 % | |
Nickel | 4.5 - 6.5 % | |
Nitrogen | 0.1 - 0.22 % | |
Phosphorus | 0.04 % | |
Silicon | 1 % | |
Sulfur | 0.015 % |
Technological properties
| Property | ||
|---|---|---|
| Application areas | Construction industry, Chemical industry, Petro-chemical industry, Electronic equipment, Food and Beverage industries, Mechanical engineering, Off-shore structures and Ship building | |
| Corrosion properties | Excellent - Superb corrosion resistance in chloride containing and acid environments, especially in phosphoric and organic acids. Corrosion resistance is superior to that of 1.4404. As a result of the duplex structure 1.4462 exhibits superior corrosion resistance to the austenitic grades in that it is not susceptible to intergranular corrosion and also in that this grade of steel is exceptionally resistant to stress corrosion cracking. This stainless steel is also resistant to pitting corrosion, which together with its resistance to stress corrosion cracking accounts for its extensive use in offshore applications. PRE = 30.85 – 38.07 | |
| General machinability | Poor - Like all duplex stainless steels, 1.4462 is only machinable with some difficulty. The factors responsible for this are the high strength and duplex structure. The optimal cutting/machining parameters lie within a much narrower band than is the case with the austenitic grades. Coated hard metal cutting/machining tools or the use of Cermets are recommended for the machining of 1.4462. | |
| Heat Treatment | Optimal corrosion and mechanical properties can be obtained by solution annealing the steel at temperatures between 1050 °C und 1100 °C followed by rapid cooling in air or water. | |
| Hot forming | It is formable at 950-1200°C | |
| Processing history | Solution Annealed | |
| Welding | Good - Like all duplex stainless steels, care must be taken when welding 1.4462. The optimal enveope of welding parameters is small and as such deviations outside these optimal limits could lead to poor welds. Within the prescribed welding parameters, weldability is good. The use of slightly higher heat inputs (1 – 3 kJ/mm), during welding is preferable since this results in a better phase distribution in the weld zone, which in turn results in improved mechanical properties of the weldment. | |