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.



AISI Thickness
Tolerance Ranges

Galvanized Steel Sheet

Gage
No.

Thickness, Inches

lbs. per
sq. ft.

Gage
No.

Thickness, Inches

lbs. per
sq. ft.

Dec.
Equiv.

Tol.
Range

Wt.
Equiv.

Dec.
Equiv.

Tol.
Range

Wt.
Equiv.

10

.1382

.1472
.1292

5.78125

21

.0366

.0406
.0326

1.53125

11

.1233

.1323
.1143

5.15625

22

.0336

.0376
.0296

1.40625

12

.1084

.1174
.0994

4.53125

23

.0306

.0346
.0266

1.28125

13

.0934

.1014
.0854

3.90625

24

.0276

.0316
.0236

1.15625

14

.0785

.0865
.0705

3.28125

25

.0247

.0287
.0207

1.03125

15

.0710

.0770
.0650

2.96875

26

.0217

.0247
.0187

0.90625

16

.0635

.0695
.0575

2.65625

27

.0202

.0232
.0172

0.84375

17

.0575

.0625
.0525

2.40625

28

.0187

.0217
.0157

0.78125

18

.0516

.0566
.0466

2.15625

29

.0172

.0202
.0142

0.71875

19

.0456

.0506
.0406

1.90625

30

.0157

.0187
.0127

0.65625

20

.0396

.0436
.0356

1.65625

 

 

 

 

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

Gages 10, 11, & 12 - tolerances shown are for widths over 40" to 60" inclusive.
All other age over 32" to 60" inclusive.