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Hot Roll Steel Tolerances

 

Round Bars | Square Bars | Rectangle Bars | Sheet/Plate | Tread Plate | Square Tubes | Rectangle Tubes | Pipe | Angle

 

 

 

 

 

 

 

Round Bar
Alloy(s)    Spec. Diameter, in.  Diameter Tol. (over(+)/under(-))
 A36  Hot Rolled  Up to 0.3125, incl.  +/- 0.005"
 A36   Hot Rolled   Over 0.3125 to 0.4375, incl.   +/- 0.006"
 A36   Hot Rolled   Over 0.4375 to 0.625, incl.   +/- 0.007" 
 A36   Hot Rolled  Over 0.625 to 0.875   +/- 0.008" 
 A36  Hot Rolled Over 0.875 to 1, incl.  +/- 0.009"
 A36  Hot Rolled  Over 1 to 1.125, incl.  +/- 0.010"
 A36  Hot Rolled  Over 1.125 to 1.25, incl.  +/- 0.011"
 A36  Hot Rolled  Over 1.25 to 1.375, incl.  +/- 0.012"
 A36   Hot Rolled   Over 1.375 to 1.5, incl.  +/- 0.014" 
 A36  Hot Rolled  Over 1.5 to 2, incl.  +/- 1/64"
 A36  Hot Rolled  Over 2 to 2.5, incl.  + 1/32"
 A36  Hot Rolled  Over 2.5 to 3.5, incl.  + 3/64"

 

 

 

 

 

 

 

Square Bar
Alloy(s)   Spec. Square, in. Square Tol. (over(+)/under(-))
 A36   Hot Rolled   Over 0.3125 to 0.4375, incl.   +/- 0.006"
 A36   Hot Rolled   Over 0.4375 to 0.625, incl.   +/- 0.007" 
 A36   Hot Rolled  Over 0.625 to 0.875   +/- 0.008" 
 A36  Hot Rolled Over 0.875 to 1, incl.  +/- 0.009"
 A36  Hot Rolled  Over 1 to 1.125, incl.  +/- 0.010"
 A36  Hot Rolled  Over 1.125 to 1.25, incl.  +/- 0.011"
 A36  Hot Rolled  Over 1.25 to 1.375, incl.  +/- 0.012"
 A36   Hot Rolled   Over 1.375 to 1.5, incl.  +/- 0.014" 
 A36  Hot Rolled  Over 1.5 to 2, incl.  +/- 1/64"

 

 

 

 

 

 

 

Rectangle Bar
Applicable Alloy(s): A36
      Spec. Thickness 
        Up to 0.230, excl.  0.230 to 0.250, excl.  0.250 to 0.500, incl.  Over 0.500 to 1, incl.   Over 1 to 2, incl.  Over 2 to 3, incl.  Over 3
 Spec. Width, in. Width Tol. (over(+)/under(-))   Thickness Tol. (over(+)/under(-))
 Up to 1, incl.   +/- 1/64"    +/- 0.007"  +/- 0.007"   +/- 0.007"   +/- 0.010"  ...  ...  ...
 Over 1 to 2, incl.    +/- 1/32"    +/- 0.007"  +/- 0.007"   +/- 0.012"   +/- 0.015" +/- 1/32"  ...   ...
 Over 2 to 4, incl.    + 1/16", - 1/32"    +/- 0.008"  +/- 0.008"   +/- 0.015"   +/- 0.020" +/- 1/32"  +/- 3/64"  +/- 3/64"
 Over 4 to 6, incl.    + 3/32", - 1/16"    +/- 0.009"  +/- 0.009"   +/- 0.015"   +/- 0.020" +/- 1/32"   +/- 3/64"   +/- 3/64"
 Over 6 to 8, incl.    + 1/8", - 3/32"    ...  +/- 0.015"   +/- 0.016"   +/- 0.025" +/- 1/32"   +/- 3/64"   +/- 1/16"

 

 

 

 

 

 

 

Sheet/Plate
Applicable Alloy(s): A569/1011
Spec. Gage No. Decimal Equiv., in. Tolerance Range, in.
4  0.2242  0.2152 to 0.2332
5  0.2092  0.2002 to 0.2182
6  0.1943  0.1853 to 0.2033
7  0.1793  0.1713 to 0.1873
8  0.1644  0.1564 to 0.1724
9  0.1495  0.1415 to 0.1575
10  0.1345  0.1265 to 0.1425
11  0.1196  0.1116 to 0.1276
12  0.1046  0.0966 to 0.1126
13  0.0897  0.0827 to 0.0967
14  0.0747  0.0677 to 0.0817
15  0.0673  0.0613 to 0.0733
16  0.0598  0.0538 to 0.0658
17  0.0538  0.0478 to 0.0598
18  0.0478  0.0428 to 0.0528

 

 

Sheet/Plate
Applicable Alloy(s): A653 Galvanized
Spec. Gage No. Decimal Equiv., in. Tolerance Range, in.
10 0.1382  0.1292 to 0.1472
11 0.1233  0.1143 to 0.1323
12 0.1084  0.0994 to 0.1174
13 0.0934  0.0854 to 0.1014
14 0.0785  0.0705 to 0.0865
15 0.0710  0.0650 to 0.0770
16 0.0635  0.0575 to 0.0695
17 0.0575  0.0525 to 0.0625
18 0.0516  0.0466 to 0.0566
19 0.0456  0.0406 to 0.0506
20 0.0396  0.0356 to 0.0436
21 0.0366  0.0326 to 0.0406
22 0.0336  0.0296 to 0.0376
23 0.0306  0.0266 to 0.0346
24 0.0276  0.0236 to 0.0316 
25 0.0247  0.0207 to 0.0287
26 0.0217  0.0187 to 0.0247
27 0.0202  0.0172 to 0.0232
28  0.0187  0.0157 to 0.0217
29 0.0172  0.0142 to 0.0202
30 0.0157  0.0127 to 0.0187 

 

 

Sheet/Plate
Applicable Alloy(s): A606/A588a Weathering Steel
  Thickness Tolerance for Widths Given, in. (over(+)/under(-))
Spec. Thickness, in. Up thru 48 Over 48 to 60, excl. Over 60 to 72, excl.
Up to 0.250, excl.  +/- 0.03"  +/- 0.03"  +/- 0.03"
0.250 to 0.3125, excl.  +/- 0.03"  +/- 0.03"  +/- 0.03"
0.3125 to 0.375, excl.  +/- 0.03"  +/- 0.03"  +/- 0.03"
0.375 to 0.4375, excl.  +/- 0.03"  +/- 0.03"  +/- 0.03"
0.4375 to 0.500, excl.  +/- 0.03"  +/- 0.03"  +/- 0.03"
0.500 to 0.625, excl.  +/- 0.03"  +/- 0.03"  +/- 0.03"
0.625 to 0.750, excl.  +/- 0.03"  +/- 0.03"  +/- 0.03"
0.750 to 1.000, excl.  +/- 0.03"  +/- 0.03"  +/- 0.03"

 

 

Sheet/Plate
Applicable Alloy(s): A36
  Thickness Tolerance for Widths Given, in. (over(+)/under(-))
Spec. Thickness, in. Up thru 48 Over 48 to 60, excl. Over 60 to 72, excl.
Up to 0.250, excl.  +/- 0.03"  +/- 0.03"  +/- 0.03"
0.250 to 0.3125, excl.  +/- 0.03"  +/- 0.03"  +/- 0.03"
0.3125 to 0.375, excl.  +/- 0.03"  +/- 0.03"  +/- 0.03"
0.375 to 0.4375, excl.  +/- 0.03"  +/- 0.03"  +/- 0.03"
0.4375 to 0.500, excl.  +/- 0.03"  +/- 0.03"  +/- 0.03"
0.500 to 0.625, excl.  +/- 0.03"  +/- 0.03"  +/- 0.03"
0.625 to 0.750, excl.  +/- 0.03"  +/- 0.03"  +/- 0.03"
0.750 to 1.000, excl.  +/- 0.03"  +/- 0.03"  +/- 0.03"
1.000 to 2.000, excl.  +/- 0.06"  +/- 0.06"   +/- 0.06"
2.000 to 3.000, excl.  +/- 0.09"  +/- 0.09"  +/- 0.09"
3.000 to 4.000, excl.  +/- 0.11"  +/- 0.11"  +/- 0.11"

 

 

 

 

 

 

 

Tread Plate
Alloy(s) Spec. Thickness, in. Spec. Tolerance (over(+)/under(-))
A786 0.075 +/- 0.014"
A786 0.125 +/- 0.015"
A786 0.250 +/- 0.017"

 

 

 

 

 

 

 

Square Tube
Alloy(s)    Spec. Height, in. Wall Thickness, in. Height Tol. (over(+)/under(-))
 A500/A513  Hot Rolled  0.1875 to 0.625, incl.  0.020 to 0.083, incl.  +/- 0.004"
 A500/A513  Hot Rolled  Over 0.625 to 1.125  0.022 to 0.156, incl.  +/- 0.005"
 A500/A513  Hot Rolled  Over 1.125 to 1.5  0.025 to 0.192, incl.  +/- 0.006" 
 A500/A513  Hot Rolled  Over 1.5 to 2, incl.  0.032 to 0.192, incl.  +/- 0.008"
 A500/A513  Hot Rolled  Over 2 to 3, incl.  0.035 to 0.259, incl.  +/- 0.010" 
 A500/A513  Hot Rolled  Over 3 to 4, incl.  0.049 to 0.259, incl.  +/- 0.020"
 A500/A513  Hot Rolled  Over 4 to 6, incl.  0.065 to 0.259, incl.  +/- 0.020"
 A500/A513  Hot Rolled  Over 6 to 8, incl.   0.185 to 0.259, incl.  +/- 0.025"
Wall Thickness Tolerance = +/- 10% of specified wall thickness

 

 

Square Tube
Alloy(s)   Spec. Height, in.  Wall Thickness, in.  Radius Tolerance
A500/A513  Hot Rolled  0.5 to 1.5, incl.  0.022  1/64" to 3/64"
A500/A513  Hot Rolled  0.5 to 1.5, incl.  0.028  1/32" to 1/16" 
A500/A513  Hot Rolled  0.5 to 2.5, incl.  0.035  1/32" to 1/16"
A500/A513  Hot Rolled  0.5 to 2.5, incl.  0.042  3/64" to 5/64"
A500/A513   Hot Rolled    0.5 to 4, incl.  0.049   3/64" to 5/64"
A500/A513  Hot Rolled  0.5 to 4.125, incl.  0.065  1/16" to 7/64"
A500/A513  Hot Rolled  0.75 to 4.125, incl.  0.083  5/64" to 1/8"
A500/A513  Hot Rolled  Over 4.125 to 6, incl.  0.083  3/16" to 5/16"
A500/A513  Hot Rolled  1 to 4.125, incl.  0.095  3/32" to 5/32"
A500/A513  Hot Rolled  Over 4.125 to 6, incl.  0.095  3/16" to 5/16"
A500/A513  Hot Rolled  1.25 to 4, incl.  0.109  1/8" to 13/64"
A500/A513  Hot Rolled  Over 4 to 6, incl.  0.109  3/16" to 5/16"
A500/A513  Hot Rolled  1.25 to 4, incl.  0.120  1/8" to 7/32"
A500/A513  Hot Rolled  Over 4 to 6, incl.  0.120  7/32" to 7/16"
A500/A513  Hot Rolled  2 to 4, incl.   0.134  5/32" to 9/32"
A500/A513  Hot Rolled  Over 4 to 6, incl.  0.134  7/32" to 7/16"
A500/A513  Hot Rolled  2 to 4, incl.  0.148  3/16" to 5/16"
A500/A513  Hot Rolled  Over 4 to 8, incl.  0.148  7/32" to 7/16"
A500/A513  Hot Rolled  2 to 8, incl.  0.165  1/4" to 1/2" 
A500/A513  Hot Rolled  2 to 8, incl.  0.180  1/4" to 1/2"
A500/A513  Hot Rolled  2.5 to 4, incl.  0.203  5/16" to 9/16" 
A500/A513  Hot Rolled  Over 4 to 8, incl.  0.203  5/16" to 9/16"
A500/A513  Hot Rolled  2.5 to 8, incl.  0.220  3/8" to 5/8"
A500/A513  Hot Rolled  2.5 to 8, incl.  0.238  3/8" to 5/8"
A500/A513  Hot Rolled  2.5 to 8, incl.  0.259  3/8" to 5/8"

 

 

 

 

 

 

 

Rectangle Tube
Alloy(s)   Largest Spec. Height or Width Dimension, in. Wall Thickness, in. Height and/or Width Tol. (over(+)/under(-))
 A500/A513  Hot Rolled  0.1875 to 0.625, incl.  0.020 to 0.083, incl.  +/- 0.004"
 A500/A513  Hot Rolled  Over 0.625 to 1.125  0.022 to 0.156, incl.  +/- 0.005"
 A500/A513  Hot Rolled  Over 1.125 to 1.5  0.025 to 0.192, incl.  +/- 0.006" 
 A500/A513  Hot Rolled  Over 1.5 to 2, incl.  0.032 to 0.192, incl.  +/- 0.008"
 A500/A513  Hot Rolled  Over 2 to 3, incl.  0.035 to 0.259, incl.  +/- 0.010" 
 A500/A513  Hot Rolled  Over 3 to 4, incl.  0.049 to 0.259, incl.  +/- 0.020"
 A500/A513  Hot Rolled  Over 4 to 6, incl.  0.065 to 0.259, incl.  +/- 0.020"
 A500/A513  Hot Rolled  Over 6 to 8, incl.   0.185 to 0.259, incl.  +/- 0.025"
Wall Thickness Tolerance = +/- 10% of specified wall thickness

 

 

Rectangle Tube
Alloy(s)   Largest Spec. Height or Width Dimension, in. Wall Thickness, in.  Radius Tolerance
A500/A513  Hot Rolled  0.5 to 1.5, incl.  0.022  1/64" to 3/64"
A500/A513  Hot Rolled  0.5 to 1.5, incl.  0.028  1/32" to 1/16" 
A500/A513  Hot Rolled  0.5 to 2.5, incl.  0.035  1/32" to 1/16"
A500/A513  Hot Rolled  0.5 to 2.5, incl.  0.042  3/64" to 5/64"
A500/A513   Hot Rolled    0.5 to 4, incl.  0.049   3/64" to 5/64"
A500/A513  Hot Rolled  0.5 to 4.125, incl.  0.065  1/16" to 7/64"
A500/A513  Hot Rolled  0.75 to 4.125, incl.  0.083  5/64" to 1/8"
A500/A513  Hot Rolled  Over 4.125 to 6, incl.  0.083  3/16" to 5/16"
A500/A513  Hot Rolled  1 to 4.125, incl.  0.095  3/32" to 5/32"
A500/A513  Hot Rolled  Over 4.125 to 6, incl.  0.095  3/16" to 5/16"
A500/A513  Hot Rolled  1.25 to 4, incl.  0.109  1/8" to 13/64"
A500/A513  Hot Rolled  Over 4 to 6, incl.  0.109  3/16" to 5/16"
A500/A513  Hot Rolled  1.25 to 4, incl.  0.120  1/8" to 7/32"
A500/A513  Hot Rolled  Over 4 to 6, incl.  0.120  7/32" to 7/16"
A500/A513  Hot Rolled  2 to 4, incl.   0.134  5/32" to 9/32"
A500/A513  Hot Rolled  Over 4 to 6, incl.  0.134  7/32" to 7/16"
A500/A513  Hot Rolled  2 to 4, incl.  0.148  3/16" to 5/16"
A500/A513  Hot Rolled  Over 4 to 8, incl.  0.148  7/32" to 7/16"
A500/A513  Hot Rolled  2 to 8, incl.  0.165  1/4" to 1/2" 
A500/A513  Hot Rolled  2 to 8, incl.  0.180  1/4" to 1/2"
A500/A513  Hot Rolled  2.5 to 4, incl.  0.203  5/16" to 9/16" 
A500/A513  Hot Rolled  Over 4 to 8, incl.  0.203  5/16" to 9/16"
A500/A513  Hot Rolled  2.5 to 8, incl.  0.220  3/8" to 5/8"
A500/A513  Hot Rolled  2.5 to 8, incl.  0.238  3/8" to 5/8"
A500/A513  Hot Rolled  2.5 to 8, incl.  0.259  3/8" to 5/8"

 

 

 

 

 

 

 

Pipe
Alloy(s)   Nominal Pipe Size   O.D., in.  O.D. Tolerance (over(+)/under(-)) Wall Thickness, in.  Wall Thickness Tol. (over(+)/under(-))
A500 Hot Rolled  0.750  1.050  +/-0.5%  0.113  +/- 10%
A500 Hot Rolled  1.000  1.315  +/-0.5%  0.133  +/- 10%
A500 Hot Rolled  1.250  1.660  +/-0.5%  0.140  +/- 10%
A500 Hot Rolled  1.500  1.900  +/-0.5%  0.145  +/- 10%
A500 Hot Rolled  2.000  2.375   +/-0.75%  0.154  +/- 10%
A500 Hot Rolled  2.500  2.875  +/-0.75%  0.203  +/- 10%
A500 Hot Rolled  3.000  3.500  +/-0.75%  0.216  +/- 10%

 

 

 

 

 

 

 

Angle
          Thickness Tolerance, in. (over(+)/under(-))
Alloy(s)   Nominal Leg Size, in.   Leg Tolerance    Thickness up to 3/16 Thickness over 3/16 to 3/8, incl.  Thickness over 3/8
A36 Hot Rolled  Up to 1   +/- 1/32"    +/- 0.008"  +/- 0.010"   ... 
A36 Hot Rolled  Over 1 to 2, incl.  +/- 3/64"    +/- 0.010"   +/- 0.010"   +/- 0.012" 
A36 Hot Rolled  Over 2 to 2.5, incl.  +/- 1/16"    +/- 0.012"   +/- 0.015"   +/- 0.015"
A36 Hot Rolled  Over 2.5 to 4, incl.  + 1/8", - 3/32"     ...  ...   ... 
A36 Hot Rolled  Over 4 to 6, incl.  +/- 1/8"    ...   ...  ... 
*Where '...' appears, there is no requirement
*For unequal leg angles, longer leg determines tolerance