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# Steel Plates - Size & Weight

## Size & weight of steel plates - Imperial and Metric units.

### Steel Plate Thickness and Weight - Imperial Units

Nominal Size Thickness
(inches)
Weight
(lb/ft2)

3/16 7.65
1/4 10.2
5/16 12.8
3/8 15.3
7/16 17.9
1/2 20.4
9/16 22.9
5/8 25.5
11/16 28.1
3/4 30.6
13/16 33.2
7/8 35.7
1 40.8
1 1/8 45.9
1 1/4 51.0
1 3/8 56.1
1 1/2 61.2
1 5/8 66.3
1 3/4 71.4
1 7/8 76.5
2 81.6
2 1/8 86.7
2 1/4 91.8
2 1/2 102
2 3/4 112
3 122
3 1/4 133
3 1/2 143
3 3/4 153
4 163
4 1/4 173
4 1/2 184
5 204
5 1/2 224
6 245
6 1/2 265
7 286
7 1/2 306
8 326
9 367
10 408
• 1 in = 25.4 mm
• 1 lb/ft2 = 4.88 kg/m2

Steel sheets and plates are typical stocked in 36”, 48”, and 60” widths and 96”, 120”, and 144” lengths.

#### Example - Weight of Steel Plate

The weight of a 1 inch thick 36" (3 ft) x 96" (8 ft) steel plate with weight 40.8 lb/ft2 (from table above) can be calculated as

W = (40.8 lb/ft2) (3 ft) (8 ft)

= 979 lb

### Calculating Steel Plate Weight

Weight per sq. feet of hot rolled mild steel plates can be calculated as

W = 40.8 t                         (1)

where

W = weight of steel plate (lb/ft2)

t = plate thickness (in)

Insert 3D components with the Engineering ToolBox Sketchup Extension

width (in)

length (in)

thickness (in)

density (lb/ft3)

### Steel Plate Thickness and Weight - Metric Units

Plate Thickness
(mm)
Weight
(kg/m2)
1.6 12.6
2.0 15.7
2.5 19.6
3 23.6
3.2 25.1
4 31.4
5 39.3
6 47.1
8 62.8
10 78.5
12.5 98.1
15 118
20 157
22.5 177
25 196
30 236
32 251
35 275
40 314
45 353
50 393
55 432
60 471
65 510
70 550
75 589
80 628
90 707
100 785
110 864
120 942
130 1051
150 1178
160 1256
180 1413
200 1570
250 1963

Steel sheets and plates are typical stocked as size 2000 mm x 3000 mm.

Weight per sq. meter of hot rolled mild steel plates can be calculated as

W = 7.85 t                         (2)

where

W = weight of steel plate (kg/m2)

t = plate thickness (mm)

width (mm)

length (mm)

thickness (mm)

density (kg/m3)

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