Form:

This specification covers balls made of high-carbon corrosion-resistant steel of three carbon ranges.

Application:

These products have been used typically for bearing balls, but usage is not limited to such applications.

Classification:

One of three compositions, designated herein as 51440A, 51440B and 51440C may be specified on the part drawing. When not otherwise specified, manufacturer may select the composition with the carbon range appropriate to the ball size and manufacturing process.