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Steel thickness charts
The charts that follow illustrates the +/- tolerance variation for galvanized,
hot-rolled, and cold-rolled steel. The tolerance variation is directly
related to and dependent on the specified width and thickness of the material
to be roll formed.
Galvanized steel
Specified
Width,
Inches |
Thickness tolerance, inch over
only.
No tolerance under specified minimum thickness |
over .101
thru .177 |
over .075
thru .101 |
over .061
thru .075 |
over .043
thru .061 |
over .023
thru .043 |
.023 and
thinner |
--- |
thru 32 |
.016 |
.014 |
.012 |
.010 |
.008 |
.006 |
over 32 |
thru 40 |
.016 |
.016 |
.012 |
.010 |
.008 |
.006 |
over 40 |
thru 60 |
.018 |
.016 |
.012 |
.010 |
.008 |
.006 |
over 60 |
thru 72 |
.018 |
.018 |
.012 |
.010 |
.008 |
--- |

Hot rolled steel
Specified
Width,
Inches |
Thickness tolerance, inch over
only.
No tolerance under specified minimum thickness |
over .179
thru .230 |
over .097
thru .179 |
over .082
thru .097 |
over .071
thru .082 |
--- |
thru 20 |
.016 |
.016 |
.014 |
.014 |
over 20 |
thru 32 |
.018 |
.016 |
.014 |
.014 |
over 32 |
thru 40 |
.018 |
.018 |
.016 |
.014 |
over 40 |
thru 48 |
.020 |
.020 |
.016 |
.014 |
over 48 |
thru 60 |
--- |
.020 |
.016 |
.014 |
over 60 |
thru 72 |
--- |
.022 |
.018 |
.016 |
over 72 |
--- |
--- |
.024 |
.018 |
.016 |

Cold rolled steel
Specified Width,
Inches |
Thickness tolerance, inch over
only.
No tolerance under specified minimum thickness |
over .098
thru .142 |
over .071
thru .098 |
over .057
thru .071 |
over .039
thru .057 |
over .019
thru .039 |
.over .014
thru .019 |
24 thru 72 |
.012 |
.010 |
.010 |
.008 |
.006 |
.004 |
over 72 |
.014 |
.012 |
.010 |
.008 |
.006 |
--- |

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forming, metal fabricating, and welding services we provide, please fill out our contact
form or call us at 1-815-323-1310.
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