5/16 inch steel plate weight
62.31 kg/m² · 12.76 lb/ft²
A 5/16 inch (7.94 mm) carbon steel plate weighs 62.31 kg per square metre: 7.938 mm × 7.85 kg/(m²·mm).
Weight of standard plate sizes
| Plate size | kg | lb |
|---|---|---|
| 4 × 8 ft | 185.2 | 408.4 |
| 4 × 10 ft | 231.5 | 510.5 |
| 5 × 10 ft | 289.4 | 638.1 |
| 8 × 20 ft | 926.2 | 2,041.9 |
Same thickness in other metals
| Material | kg/m² | lb/ft² |
|---|---|---|
| Stainless steel 304 | 62.94 | 12.89 |
| Aluminum | 21.43 | 4.39 |
| Copper | 71.12 | 14.57 |
| Brass | 67.47 | 13.82 |
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 | 0.64 | 1.42 |
| 6 × 6 in | 1.45 | 3.19 |
| 8 × 8 in | 2.57 | 5.67 |
| 10 × 10 in | 4.02 | 8.86 |
| 12 × 12 in | 5.79 | 12.76 |
| 18 × 18 in | 13.02 | 28.71 |
| 24 × 24 in | 23.15 | 51.05 |
| 48 × 48 in | 92.62 | 204.19 |
| Round disc | kg | lb |
|---|---|---|
| Ø 4 in | 0.51 | 1.11 |
| Ø 8 in | 2.02 | 4.45 |
| Ø 12 in | 4.55 | 10.02 |
| Ø 24 in | 18.19 | 40.09 |
| Ø 48 in | 72.74 | 160.37 |
For any other shape, multiply the area by 62.31 kg/m² (12.76 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 | 4.9 |
| 5 × 10 ft | 3.1 |
| 8 × 20 ft | 1.0 |
Compared with nearby thicknesses
| Thickness | kg/m² | lb/ft² | vs 5/16 inch |
|---|---|---|---|
| 3/16 in | 37.39 | 7.66 | −40 % |
| 1/4 in | 49.85 | 10.21 | −20 % |
| 5/16 in | 62.31 | 12.76 | — |
| 3/8 in | 74.77 | 15.31 | +20 % |
| 1/2 in | 99.70 | 20.42 | +60 % |
The nearest standard metric thickness is 8 mm (8.00 mm, 62.80 kg/m²). This thickness is common for base plates of light columns, gussets, brackets, cleats, stiffeners, chequer plate floors and tank shells.
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 5/16 inch steel plate weigh per square foot?
12.76 lb/ft²: 0.3125 in × 40.8 lb per ft² per inch.
How much does a 4 × 8 sheet of 5/16 inch steel plate weigh?
408.4 lb (32 ft² × 12.76 lb/ft²). A 5 × 10 ft sheet weighs 638.1 lb.
What is the metric equivalent of 5/16 inch plate?
The nearest standard metric thickness is 8 mm (8.00 mm). They are not identical, so check tolerances and weights if you substitute.
How much does a 12 × 12 in piece of 5/16 inch plate weigh?
12.76 lb (1 ft² × 12.76 lb/ft²), before holes or chamfers.
How much does 5/16 inch aluminum or stainless plate weigh?
Aluminum 5/16 inch plate weighs about 21.43 kg/m², stainless steel 304 about 62.94 kg/m².
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