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 | 250 mm Show Supplier Material materials with Diameter of 250 mm | max. |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Charpy impact energy, V-notch | 90 J Show Supplier Material materials with Charpy impact energy, V-notch of 90 J | ||
Elastic modulus | 20 °C | 200 GPa Show Supplier Material materials with Elastic modulus of 200 GPa | |
100 °C | 195 GPa Show Supplier Material materials with Elastic modulus of 195 GPa | ||
200 °C | 185 GPa Show Supplier Material materials with Elastic modulus of 185 GPa | ||
300 °C | 175 GPa Show Supplier Material materials with Elastic modulus of 175 GPa | ||
400 °C | 170 GPa Show Supplier Material materials with Elastic modulus of 170 GPa | ||
Elongation | 14 % Show Supplier Material materials with Elongation of 14 % | A5 | Transverse | |
16 % Show Supplier Material materials with Elongation of 16 % | A5 | ||
Hardness, Brinell | 320 [-] Show Supplier Material materials with Hardness, Brinell of 320 [-] | annealed | |
Tensile strength | 760 - 960 MPa Show Supplier Material materials with Tensile strength of 760 - 960 MPa | ||
Yield strength | 20 °C | 550 MPa Show Supplier Material materials with Yield strength of 550 MPa | RP02 |
100 °C | 520 MPa Show Supplier Material materials with Yield strength of 520 MPa | RP02 | |
150 °C | 510 MPa Show Supplier Material materials with Yield strength of 510 MPa | RP02 | |
200 °C | 500 MPa Show Supplier Material materials with Yield strength of 500 MPa | RP02 | |
250 °C | 490 MPa Show Supplier Material materials with Yield strength of 490 MPa | RP02 | |
300 °C | 480 MPa Show Supplier Material materials with Yield strength of 480 MPa | RP02 |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 100 °C | 1.08e-05 1/K Show Supplier Material materials with Coefficient of thermal expansion of 1.08e-05 1/K | for 20°C to the mentioned temperature |
200 °C | 1.08e-05 1/K Show Supplier Material materials with Coefficient of thermal expansion 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 Coefficient of thermal expansion 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 Coefficient of thermal expansion of 1.16e-05 1/K | for 20°C to the mentioned temperature | |
Specific heat capacity | 430 J/(kg·K) Show Supplier Material materials with Specific heat capacity of 430 J/(kg·K) | ||
Thermal conductivity | 15 W/(m·K) Show Supplier Material materials with Thermal conductivity of 15 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 | 0.06 % Show Supplier Material materials with Carbon of 0.06 % |
Chromium | 15 - 17 % Show Supplier Material materials with Chromium of 15 - 17 % |
Iron | Balance |
Manganese | 1.5 % Show Supplier Material materials with Manganese of 1.5 % |
Molybdenum | 0.8 - 1.5 % Show Supplier Material materials with Molybdenum of 0.8 - 1.5 % |
Nickel | 4 - 6 % Show Supplier Material materials with Nickel of 4 - 6 % |
Nitrogen | 0.02 % Show Supplier Material materials with Nitrogen of 0.02 % |
Phosphorus | 0.04 % Show Supplier Material materials with Phosphorus of 0.04 % |
Silicon | 0.7 % Show Supplier Material materials with Silicon of 0.7 % |
Sulfur | 0.03 % Show Supplier Material materials with Sulfur of 0.03 % |
Technological properties
| Property | ||
|---|---|---|
| Application areas | Chemical industry, Ship Building, Mechanical Engineering, Aviation and Aerospace industry | |
| Corrosion properties | Good - Due to its higher alloy content, 1.4418 is more resistant to corrosion than 1.4057 and the addition of molybdenum allows limited exposure to marine environments. As a result of its chemical composition and microstructure, 1.4418 is extremely resistant to intergranular corrosion, corrosion fatigue and stress corrosion cracking. | |
| General machinability | Poor - The machinability of this grade of stainless steel is directly related to its hardness. 1.4418 machines similar to carbon steels of the same hardness. Although it must be realised that the machining parameters will vary depending on the heat treated condition and hardness of the steel. | |
| Heat Treatment | 1.4418 can be soft annealed by holding at a temperature of approximately 600 °C (but not in excess of 625 °C), followed by slow cooling in air. 1.4418 can be hardened by holding at a temperature between 1000 °C – 1050 °C followed by cooling in air, oil or polymer. Tempering 590-620°C in water, air | |
| Hot forming | It is formable at 900-1150°C | |
| Processing history | Quenched and tempered QT 760 | |
| Welding | Good - 1.4418 is readily weldable using all standard welding techniques. Care must however be taken to ensure that hydrogen or carbon containing gasses are not used when welding under shielded gas. Pre-heating of the work piece to a temperature between 100 °C and 200 °C is recommended. After welding, the weldment should either be annealed or tempered, as described before. If a filler material is required, then either a matching filler or Novonit® 4430 should be used. | |