Mechanical Properties:
– Tensile Strength: 150 ksi (1034 MPa)
– Yield Strength: 130 ksi (896 MPa)
– Elongation: 12%
– Hardness: 321 HB
– Impact Toughness: 25 Joules
Technical Properties:
– Density: 7.85 g/cm3
– Thermal Conductivity: 50 W/m-K
– Electrical Conductivity: 18% IACS
– Young’s Modulus: 200 GPa
– Poisson’s Ratio: 0.3
Chemical Composition:
– Carbon (C): 0.16%
– Silicon (Si): 0.40%
– Manganese (Mn): 0.70%
– Phosphorus (P): 0.025%
– Sulfur (S): 0.020%
– Chromium (Cr): 1.00%
– Molybdenum (Mo): 0.20%
The heat treatment process for 1503-660-440 steel grade typically involves the following steps:
1. Preheating: The steel is heated to a temperature between 800-900°C to ensure uniform heating throughout the material.
2. Soaking: The steel is held at this temperature for a specific period of time to allow for the austenitization of the microstructure.
3. Quenching: The steel is rapidly cooled by immersing it in a quenching medium such as water, oil, or polymer to transform the austenitic structure into martensite.
4. Tempering: The steel is reheated to a lower temperature (typically 400-600°C) to reduce the brittleness and improve the toughness and ductility of the material.
By carefully controlling the heat treatment process, the mechanical properties of the 1503-660-440 steel grade can be enhanced to meet specific performance requirements for various applications. Overall, proper heat treatment is crucial for maximizing the potential of this steel grade and ensuring its optimal performance in a wide range of industrial applications.
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