Austenitic ductile iron is a bi-directional structure composed of bainitic ferrite and residual austenite stabilized by carbon and silicon obtained by a special heat treatment process of ductile iron. It has excellent comprehensive mechanical properties, namely high strength, hardness and good impact toughness, and has good work hardening ability.
Read MoreQTD1050-6 is a type of ductile iron, also known as spheroidal graphite iron or nodular cast iron. The designation “QT” stands for “Quenched and Tempered,” indicating that the material undergoes a specific heat treatment process to enhance its mechanical properties. QTD1050-6 is known for its excellent strength, toughness, and ductility, making it suitable for various engineering applications.
The key feature of QTD1050-6 is its unique microstructure, which consists of spheroidal (or nodular) graphite dispersed in a matrix of ferrite and pearlite. This structure significantly improves the mechanical properties compared to traditional gray cast iron, providing increased resilience and performance.
QTD1050-6 is characterized by its impressive mechanical properties, which include:
Tensile Strength: Typically around 500 MPa (72,000 psi). This high tensile strength makes it suitable for load-bearing applications.
Elongation: The material exhibits good elongation (around 7% to 10%), indicating its capacity to deform without breaking, which translates into improved ductility.
Impact Toughness: QT500-7 offers excellent impact resistance, making it suitable for applications subject to shock or dynamic loads.
Due to its superior properties, QTD1050-6 is commonly used in various industries, including:
Automotive Components: Such as crankcases, wheels, and suspension parts that require strength and durability.
Agricultural Equipment: Components like housing and structural elements that need to withstand heavy loads and harsh conditions.
Pipelines and Valves: Used in water, gas, and wastewater systems for fittings and flanges, benefiting from its corrosion resistance.
Heavy Machinery: Such as construction equipment and industrial machines that demand robust and resilient components.
QTD1050-6 is produced through a casting process typical of ductile iron, followed by a heat treatment process to achieve its desired mechanical properties:
Casting: The molten iron is cast into molds to form the desired shapes and components.
Heat Treatment: The cast product undergoes quenching and tempering processes. It is heated to a specific temperature, held for a duration to allow the transformation of the microstructure, and then cooled rapidly before being tempered to relieve stresses and enhance toughness.
Machining: Final machining operations may be performed to achieve precise tolerances and surface finishes, depending on the application requirements.
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