F-51 Density and Thickness
S.A.E. Specification Number F-51
A.S.T.M. Federal and Felt Association Type and Grade Number 16R3X
Density Percent Specific Gravity 33.3
Actual (1) Wool Content (Min.) Percent 92
Carbon Tetrachloride Soluble (Max.) Percent 2.5
Water Soluble (Max.) Percent 2.5
Carbon Tetrachloride & Water Soluble (Max.) Percent 4.5
Ash (Max.) Percent 2.5
Tensile Strength (Min.) PSI 300
Splitting Resistance (Min.) Lbs. Per 2" Width --
Trade Designation Ball Bearing Felt
Color Gray
Standard Width Inches 60
THICKNESS WEIGHT
Nominal (inch) Limits (inch) Nominal (lbs/sq. yd.) Limits (lbs/sq. yd.)
3/64 0.040 - 0.054 0.750 0.712 - 0.778
1/16 0.056 - 0.070 0.975 0.937 - 1.013
5/64 0.071 - 0.085 1.200 1.162 - 1.238
3/32 0.087 - 0.101 1.425 1.387 - 1.463