Alloy Steel
A very hard and tough material, made from a chromium tungsten alloy. This ball has excellent sealing ability, and has a high corrosion and abrasion resistance.
Tungsten Carbide
The best and highest grade ball protecting against corrosion and abrasion out there. This ball can handle great impacts and should be used in the most corrosive and abrasive wells.
Titanium Carbide
This material has a hardness of Rockwell 90. The titanium carbide ball has high grade corrosion and abrasion resistance and will not deform or pit like an alloy ball may in some conditions.
Silicon Nitride
Si3N4 is lightweight, hard, and has a low thermal expansion coefficient. It has high strength, toughness, resistance to deform, and the ability to run in mildly corrosive and abrasive conditions.
Zirconia
Made from stabilized zirconia, these balls have thermal stability and chemical inertness. Zirconia balls are good for mild corrosion and abrasive situations.
Stainless Steel
Made from 440C stainless steel, and able to withstand abrasion, and mild corrosion applications.