The choice between powder metallurgy and die casting is generally a matter of part size or material requirements. Commonly used die casting materials are aluminum alloys, magnesium alloys and zinc alloys, and copper alloy die castings can also be used.As a one-stop metal factory for powder metallurgy manufacturer and aluminum die casting manufacturer in China, we’ll choose the best process for you!

Compared with powder metallurgy parts and metal injection molding parts, the size of die casting products is much larger. When the following requirements are required, the powder metallurgy process is more suitable:

1. Very high strength, the tensile strength of some iron-based sintered alloys is more than three times higher than the highest strength of die casting alloys.
2.  High wear resistance and high antifriction performance, which can be solved by iron-based and copper-based sintered alloys impregnated with lubricating oil.
3. High operating temperature, which can be solved by iron-based and copper-based sintered alloys.
4.  Corrosion-resistant, copper-based sintered alloy and sintered stainless steel can meet the requirements.

Between powder metallurgy and die-casting, zinc die-casting may be a substitute for iron-based powder metallurgy products under the condition of using temperature not higher than 65 degrees Celsius and medium strength. But usually powder metallurgy is more favorable.

    VS 

Types of powder metallurgy parts

1. Structural parts

Gears and various force-bearing parts made of copper, iron, copper alloys, aluminum alloys, etc.

Sintered metal oil-impregnated bearings. Iron-based and copper-based porous bearings with a porosity of 15% to 25% are filled with lubricating oil.

Copper-backed sintered alloy bearings. The first layer is steel back and the second layer is sintered copper-aluminum alloy.

DU, DX bearings, etc.

Structural parts applications: automobiles, machine tools, agricultural machinery, textile machinery, instruments, sewing machines, power tools, etc., internal combustion engines, railway vehicles, metallurgical machinery, tape recorders, video recorders, micro-motors, etc.

2. Friction parts

Clutch discs or brake bands etc. made of steel backing with iron or copper based powder compositions

Friction parts applications: friction components on automobiles, aircraft, tanks, construction machinery, machine tools and power machinery.

3. Filter elements and other porous materials

filter element. Cup-shaped, cone-shaped, cylindrical and rod-shaped products made of spherical bronze, nickel, iron, stainless steel, and other metal powders with uniform pores.

Quenched material. There are rods, strips and tubes made of nickel, nichrome, stainless steel and other corrosion-resistant materials with a porosity of up to 50%.

Fiber metal products. High porosity (up to 80%) articles made from fine metal fibers.

Application of filter elements and other porous materials: used for filtering various gases and liquids in chemical industry, machine tools, aircraft, automobiles, internal combustion engines, etc., as porous metal filters in jet components, as porous quenching components in aircraft, Acoustic panels, filter elements for special purposes.

What is the difference between powder metallurgy and die casting? For more information, please contact JIEHUANG CHIYANG