74-75 Blue Tempered Spring Steel Tolerance Data

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C.R. Carbon Spring Steel (Tempered)
Thickness Tolerances
Tempered

Coils and Cut Lengths
Specified Thickness (inch) Thickness Tolerances - Over and Under (inch)
Specified Width (inches)
Over To & Incl. Over 1/2 to Less than 1 1 to less than 3 3 to 6 Incl. Over 6 to 9 Incl.
.060 .2499 .002 .0035 .004 .0045
.099 .160 .002 .003 .0035 .004
.068 .099 .002 .003 .003 .0035
.049 .068 .002 .0025 .003 .003
.034 .049 .002 .0025 .0025 .003
.031 .034 .0015 .002 .002 .003
.028 .031 .0015 .0015 .002 .003
.025 .028 .0015 .0015 .002 .0025
.019 .025 .001 .0015 .002 .002
.013 .019 .001 .001 .0015 .002
.009 .013 .001 .001 .001 .0015
.007 .009 .00075 .00075 .00075 .001
.0049 .007 .0005 .0005 .00075 -

*Measured 3/8 inch or more in from the edge on 1 inco or wider; and at any place between the edges on narrower than 1 inch.
NOTE: Excepting for thickness tolerances this table and the the absence of camber tolerances und 1/2" (subject to negotiation) for untempered and tempered C.R. Spring Steel Strip, all tolerances for thickness are identical with those for Cold Rolled Carbon Steel Strip. There are no published Flatness Tolerances for either tempered or untempered C.R. Carbon Spring Steel Strip.