– Carbon (C): 0.32-0.40%
– Silicon (Si): 0.15-0.40%
– Manganese (Mn): 0.40-0.70%
– Phosphorus (P): max 0.035%
– Sulfur (S): max 0.020%
– Chromium (Cr): 1.50-1.80%
– Molybdenum (Mo): 0.25-0.35%
– Vanadium (V): 0.25-0.35%
The technical and mechanical properties of 36CrMoV12 steel grade are as follows:
– Tensile strength: 1100-1300 MPa
– Yield strength: 900-1100 MPa
– Elongation: 10-15%
– Impact energy: 27J at -20°C
– Hardness: 300-350 HB
The heat treatment process for 36CrMoV12 steel grade involves the following steps:
1. Preheating: Heat the steel to a temperature of 600-700°C and hold for a specified time to ensure uniform heating.
2. Austenitizing: Heat the preheated steel to a temperature of 950-1050°C and hold for a specific time to transform the microstructure into austenite.
3. Quenching: Rapidly cool the austenitized steel by immersing it in a quenching medium, such as oil or water, to harden the material.
4. Tempering: Heat the quenched steel to a temperature of 500-650°C and hold for a specific time to reduce the brittleness and improve the toughness and ductility of the material.
The heat treatment process is crucial for achieving the desired mechanical properties and performance of the 36CrMoV12 steel grade, making it suitable for various industrial applications, including manufacturing of tools, dies, and components for the automotive and aerospace industries.
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