United States Ball Corp. utilizes all manner of materials. The table below is a list of the most common materials used.
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- Aluminum Balls
- Brass / Bronze / Copper Balls
- Carbide Balls
- Age Hardenable Stainless Balls
- Ceramic Balls
- Hollow Balls
- Cobalt Based Alloy Balls
- Nickel & Nickel Alloy Balls
- Specialty Stainless Balls
- Tantalum Balls
- Stainless Steel Balls
- 52100 Steel Balls
BALL GRADE TOLERANCE STANDARDS
United States Ball Corp. subscribes to ASTM F2215 and ANSI/ABMA/ISO 3290 ball grade standards, which are listed below. The ball grades include many tolerances. The most common tolerances are listed below.
Allowable deviation from spherical ball form:
The most significant radial distance in any radial plane between a sphere circumscribed around the precision ball surface and any point on the industrial ball surface.
Ball surface roughness:
The irregularities which form the surface relief but are not deviations of form or waviness.
Basic ball diameters & tolerance:
The maximum allowable deviation in any precision metal ball means diameter from the basic diameter ordered. Metric and Standard.
The most common tolerances are listed below:
Deviation from Spherical Ball Form
Surface Roughness Arithmetical Average (in micro-inches)
Basic Ball Diameter Tolerance (+/-)