ABSTRACT

Fig.4.10Analyticalpresentationofabsolutethicknesstolerancesspecified byInternationalStandardISO3574forcoldrolledproducts[9].

Relativetolerances-TherelativethicknesstolerancesYcanbereadilycalculatedfromtheabsolutetolerancesusingthefollowingformula:

e Y=-X100%

h (4-17)

Figures4.11through4.15graphicallyillustratetherelativethicknesstolerancesforcoldrolledproductsthatwerecalculatedusingEq.(4-17).Theserelativetolerancesutilizetheabsolutethicknesstolerancesthatarespecifiedbyvariousstandardsandareapproximatedbyusingregressionanalysiswiththe followingequation:

y(4-18)

where A,B,C,D,w0=constants(Figs.4.11through4.15).