Meaning
Pre-alloyed steel powder provides a consistent base for high strength components in powder metallurgy applications. Engineers specify astaloy mo when they require deep hardenability and uniform mechanical properties across complex geometries. This material contains molybdenum and nickel to ensure high dimensional stability during the sintering process.
Alloy Composition
Chemical uniformity defines the performance of this metal powder because the molybdenum is added to the melt before atomization. Using astaloy mo eliminates the risk of segregation during handling or mixing which occurs with diffusion bonded or admixed alternatives. Molybdenum increases the strength of the iron matrix without reducing compressibility which allows for high green densities in the pressing stage.
Higher density improves the final mechanical properties after sintering.
Material Hardness
Heat treatment response depends on the carbon content added during the secondary mixing phase. While astaloy mo maintains a ferrite structure after slow cooling, quenching produces a martensitic transformation that raises the surface hardness. Tempering following the quench cycle adjusts the balance between ductility and tensile strength to meet specific application requirements.
Fatigue Resistance
Cyclic loading performance improves when the material reaches high density levels during compaction. Parts made from astaloy mo demonstrate endurance limits suitable for automotive transmission gears and heavy duty structural connectors. Porosity reduction through double pressing or high temperature sintering further extends the service life of these components.
