3/4 inch steel plate weight
149.54 kg/m² · 30.63 lb/ft²
A 3/4 inch (19.05 mm) carbon steel plate weighs 149.54 kg per square metre: 19.050 mm × 7.85 kg/(m²·mm).
Weight of standard plate sizes
| Plate size | kg | lb |
|---|---|---|
| 4 × 8 ft | 444.6 | 980.1 |
| 4 × 10 ft | 555.7 | 1,225.1 |
| 5 × 10 ft | 694.6 | 1,531.4 |
| 8 × 20 ft | 2,222.9 | 4,900.6 |
Same thickness in other metals
| Material | kg/m² | lb/ft² |
|---|---|---|
| Stainless steel 304 | 151.07 | 30.94 |
| Aluminum | 51.43 | 10.53 |
| Copper | 170.69 | 34.96 |
| Brass | 161.92 | 33.16 |
Weight of cut pieces
Base plates, gussets, cleats and flange blanks are cut from plate. Weights below are for the full square or disc, before holes, slots or chamfers.
| Square piece | kg | lb |
|---|---|---|
| 4 × 4 in | 1.54 | 3.40 |
| 6 × 6 in | 3.47 | 7.66 |
| 8 × 8 in | 6.17 | 13.61 |
| 10 × 10 in | 9.65 | 21.27 |
| 12 × 12 in | 13.89 | 30.63 |
| 18 × 18 in | 31.26 | 68.91 |
| 24 × 24 in | 55.57 | 122.51 |
| 48 × 48 in | 222.29 | 490.06 |
| Round disc | kg | lb |
|---|---|---|
| Ø 4 in | 1.21 | 2.67 |
| Ø 8 in | 4.85 | 10.69 |
| Ø 12 in | 10.91 | 24.06 |
| Ø 24 in | 43.65 | 96.22 |
| Ø 48 in | 174.58 | 384.89 |
For any other shape, multiply the area by 149.54 kg/m² (30.63 lb/ft²). For a ring or a plate with a hole, subtract the hole's area.
Sheets per short ton
| Sheet size | Sheets |
|---|---|
| 4 × 8 ft | 2.0 |
| 5 × 10 ft | 1.3 |
| 8 × 20 ft | 0.4 |
Compared with nearby thicknesses
| Thickness | kg/m² | lb/ft² | vs 3/4 inch |
|---|---|---|---|
| 1/2 in | 99.70 | 20.42 | −33 % |
| 5/8 in | 124.62 | 25.52 | −17 % |
| 3/4 in | 149.54 | 30.63 | — |
| 1 in | 199.39 | 40.84 | +33 % |
| 1-1/4 in | 249.24 | 51.05 | +67 % |
The nearest standard metric thickness is 20 mm (20.00 mm, 157.00 kg/m²). This thickness is common for column base plates, end plates, splice plates, heavy gussets, machine frames and bridge stiffeners.
Hot-rolled plate is made to a thickness tolerance (EN 10029 in Europe, ASTM A6 in the US). These tolerances allow more over-thickness than under-thickness, so weighbridge weights can come out a little above the theoretical weight.
Frequently asked questions
How much does 3/4 inch steel plate weigh per square foot?
30.63 lb/ft²: 0.7500 in × 40.8 lb per ft² per inch.
How much does a 4 × 8 sheet of 3/4 inch steel plate weigh?
980.1 lb (32 ft² × 30.63 lb/ft²). A 5 × 10 ft sheet weighs 1,531.4 lb.
What is the metric equivalent of 3/4 inch plate?
The nearest standard metric thickness is 20 mm (20.00 mm). They are not identical, so check tolerances and weights if you substitute.
How much does a 12 × 12 in piece of 3/4 inch plate weigh?
30.63 lb (1 ft² × 30.63 lb/ft²), before holes or chamfers.
How much does 3/4 inch aluminum or stainless plate weigh?
Aluminum 3/4 inch plate weighs about 51.43 kg/m², stainless steel 304 about 151.07 kg/m².
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