Secondary Processes

FMS Secondary Processes

In the powder metallurgy process, various secondary operations may be used to further enhance the properties and characteristics of the powdered metal components. Here are several common value-add secondary processes currently offered at FMS:



After sintering, parts may be machined to allow for additional shaping or achieving precision tolerance control on certain features. Machining processes like milling, turning, and drilling are used to achieve tight tolerances and specific geometries.


Coating and Plating

Applying coatings or plating onto the surface of powder metal components can enhance corrosion resistance, improve wear characteristics, or add aesthetic appeal.



Infiltration involves introducing a low-melting-point alloy, typically copper, into the porous structure of the sintered component during sintering. When the part is heated above the melting point of the copper, it is pulled into the pores of the part through capillary action. The process can enhance properties such as density, strength, ductility, and impact strength.


Vacuum Impregnation

Impregnation is a process where the porosity of sintered components is filled with anaerobic resin, oil, or other material, to allow for sealing, lubrication, or acoustic damping.


Surface Finishing

Processes like grinding, polishing, or tumbling can be used to achieve specific surface finishes to improve aesthetics and functionality.


Brazing, Welding and Joining

Powder metal components can be welded or joined through processes like brazing, diffusion bonding, or welding to create more complex assemblies.


Lapping and Honing

Lapping and honing processes involve precision grinding and abrasive machining to achieve high levels of flatness, parallelism, and surface finish in powder metal components.


Heat Treatment

Heat treatment involves subjecting the sintered component to controlled heating and cooling cycles to alter its microstructure resulting in improved hardness, strength, and other desired mechanical properties.
These secondary processes allow FMS to tailor a powder metal component to specific applications, optimizing performance, and expanding functionality. Reach out to one of our powder metal experts today for help in solving your challenges using the powder metal process!
Please reach out to one of our powder metal experts today for assistance in solving your challenges using the PM process and technology.