Steel Thickness Chart

AISI Thickness
Tolerance Ranges

Carbon Steel Sheets/Hot Rolled, H.R.P.& O., Cold Rolled

Gage
No.

Thickness, Inches

lbs.
per
sq. ft.

Gage
No.

Thickness, Inches

lbs.
per
sq. ft.

Dec.
Equiv.

Tol. Range

Dec.
Equiv.

Tol.
Range
CR

H.R. &
P&O

CR

Wt.
Equiv.

Wt.
Equiv.

4

.2242

.2332
.2152

 

9.375

19

.0418

.0458
.0378

1.75

5

.2092

.2182
.2002

 

8.75

20

.0359

.0389
.0329

1.5

6

.1943

.2033
.1853

 

8.125

21

.0329

.0359
.0299

1.375

7

.1793

.1873
.1713

.1883
.1703

7.5

22

.0299

0329
.0269

1.25

8

.1644

.1724
.1564

.1734
.1554

6.875

23

.0269

.0299
.0239

1.125

9

.1495

.1575
.1415

.1585
.1405

6.25

24

.0239

.0269
.0209

1.0

10

.1345

.1425
.1265

.1405
.1285

5.625

25

.0209

.0239
.0179

.875

11

.1196

.1276
.1116

.1256
.1136

5.00

26

.0179

.0199
.0159

.75

12

.1046

.1126
.0966

.1106
.0986

4.375

27

.0164

.0184
.0144

.688

13

.0897

.0967
.0827

.0947
.0847

3.750

28

.0149

.0169
.0129

.625

14

.0747

.0817
.0677

.0797
.0697

3.125

29

.0135

.0155
.0115

.562

15

.0673

.0733
.0613

.0723
.0623

2.812

30

.0120

.0130
.0110

.50

16

.0598

.0658
.0538

.0648
.0548

2.50

 

 

 

 

17

.0538

.0598
.0478

.0548
.0498

2.25

 

 

 

 

18

.0478

.0528
.0428

.0518
.0438

2.00

 

 

 

 

Weight equivalents based on density of .2904 lb. per cubic inch.

Cold rolled gages 4 through 10 - tolerances shown are for widths over 48" to 72" inclusive. Hot rolled and P. & O. age 4 through 18 - tolerances shown are for widths over 40" to 48" inclusive. All other age over 15" to 72" inclusive.