Allgemein
Property | Value |
---|---|
Dichte | 7.7 g/cm³ Show Supplier Material materials with Dichte of 7.7 g/cm³ |
Mechanisch
Property | Temperature | Value | Comment |
---|---|---|---|
Charpy impact energy, V-notch | 14 J Show Supplier Material materials with Charpy impact energy, V-notch of 14 J | ||
Dehnung | 12 % Show Supplier Material materials with Dehnung of 12 % | A5 | |
Härte, Brinell | 280 [-] Show Supplier Material materials with Härte, Brinell of 280 [-] | annealed | |
Streckgrenze | 20 °C | 550 MPa Show Supplier Material materials with Streckgrenze of 550 MPa | RP02 |
100 °C | 540 MPa Show Supplier Material materials with Streckgrenze of 540 MPa | RP02 | |
150 °C | 535 MPa Show Supplier Material materials with Streckgrenze of 535 MPa | RP02 | |
200 °C | 530 MPa Show Supplier Material materials with Streckgrenze of 530 MPa | RP02 | |
250 °C | 520 MPa Show Supplier Material materials with Streckgrenze of 520 MPa | RP02 | |
300 °C | 510 MPa Show Supplier Material materials with Streckgrenze of 510 MPa | RP02 | |
350 °C | 490 MPa Show Supplier Material materials with Streckgrenze of 490 MPa | RP02 | |
400 °C | 470 MPa Show Supplier Material materials with Streckgrenze of 470 MPa | RP02 | |
Zugfestigkeit | 750 - 950 MPa Show Supplier Material materials with Zugfestigkeit of 750 - 950 MPa |
Thermisch
Property | Temperature | Value | Comment |
---|---|---|---|
Koeffizient der thermischen Ausdehnung | 100 °C | 1.04e-05 1/K Show Supplier Material materials with Koeffizient der thermischen Ausdehnung of 1.04e-05 1/K | for 20°C to the mentioned temperature |
200 °C | 1.08e-05 1/K Show Supplier Material materials with Koeffizient der thermischen Ausdehnung of 1.08e-05 1/K | for 20°C to the mentioned temperature | |
300 °C | 1.12e-05 1/K Show Supplier Material materials with Koeffizient der thermischen Ausdehnung of 1.12e-05 1/K | for 20°C to the mentioned temperature | |
400 °C | 1.16e-05 1/K Show Supplier Material materials with Koeffizient der thermischen Ausdehnung of 1.16e-05 1/K | for 20°C to the mentioned temperature | |
Spezifische Wärmekapazität | 430 J/(kg·K) Show Supplier Material materials with Spezifische Wärmekapazität of 430 J/(kg·K) | ||
Wärmeleitfähigkeit | 29 W/(m·K) Show Supplier Material materials with Wärmeleitfähigkeit of 29 W/(m·K) |
Elektrisch
Property | Value |
---|---|
spezifischer Widerstand | 6.5e-07 Ω·m Show Supplier Material materials with spezifischer Widerstand of 6.5e-07 Ω·m |
Chemical properties
Property | Value |
---|---|
Chrom | 15.5 - 17.5 % Show Supplier Material materials with Chrom of 15.5 - 17.5 % |
Eisen | Balance |
Kohlenstoff | 0.33 - 0.45 % Show Supplier Material materials with Kohlenstoff of 0.33 - 0.45 % |
Mangan | 1.5 % Show Supplier Material materials with Mangan of 1.5 % |
Molybdän | 0.8 - 1.3 % Show Supplier Material materials with Molybdän of 0.8 - 1.3 % |
Nickel | 1 % Show Supplier Material materials with Nickel of 1 % |
Phosphor | 0.04 % Show Supplier Material materials with Phosphor of 0.04 % |
Schwefel | 0.03 % Show Supplier Material materials with Schwefel of 0.03 % |
Silizium | 1 % Show Supplier Material materials with Silizium of 1 % |
Technological properties
Property | ||
---|---|---|
Application areas | Automotive industry, Pump shafts, Food and Beverage industry, Mechanical engineering, Cutting Tools, Building industry | |
Corrosion properties | Good - As a result of its higher chromium content, 17 %, 1.4122 is more corrosion resistant than 1.4006 and other 13 % chromium stainless steels. Good corrosion resistance is displayed in moderately corrosive media/environments with low chloride ion concentrations. Although the addition of molybdenum increases the resistance of this steel to chloride containing environments, it is not suited for use in sea water applications unless it is provided with cathodic protection. Optimal corrosion resistance is attained when the surface is finely ground or polished. PRE = 18.47 – 20.46 | |
General machinability | With Care - The machinability of this grade of stainless steel is directly related to its hardness and as such the optimal machining parameters vary considerably. Once the hardness is known, the machining parameters can be estimated since 1.4122 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 steel. | |
Heat Treatment | 1.4122 can be soft annealed by holding at a temperature in the range 750 °C to 850 °C followed by slow cooling in air or in a furnace. 1.4122 can be hardened by holding at a temperature between 980 °C – 1060°C followed by cooling in oil or polymer. The tempering temperature is dependent on the desired strength. The heat treated condition usually specified is the QT750 condition and is obtained by tempering in the temperature range 650 °C to 750 °C. | |
Processing history | Quenched and tempered QT 750 | |
Welding | With Care - This grade of steel is not usually welded, but if absolutely no alternative exists, then the workpiece is to be pre-heated to a temperature within the range 300 °C – 400 °C prior to welding. Since a large amount of untempered martensite will form in the heat affected zone, a subsequent tempering treatment will be required. Since this tempering treatment will over temper the already tempered martensite in the rest of the work piece, it would be preferable if the entire component were hardened and tempered, as described above. Once again, the time lapse between welding and heat treatment must be as short as possible to reduce the possibility of cracking. When the application of a filler metal is required, then Novonit® 4576 can be used. |