20 mm steel plate weight
157.00 kg/m² · 32.16 lb/ft²
A 20 mm (20.00 mm) carbon steel plate weighs 157.00 kg per square metre: 20.000 mm × 7.85 kg/(m²·mm).
Weight of standard plate sizes
| Plate size | kg | lb |
|---|---|---|
| 1000 × 2000 mm | 314.0 | 692.3 |
| 1250 × 2500 mm | 490.6 | 1,081.6 |
| 1500 × 3000 mm | 706.5 | 1,557.6 |
| 1500 × 6000 mm | 1,413.0 | 3,115.1 |
| 2000 × 6000 mm | 1,884.0 | 4,153.5 |
Same thickness in other metals
| Material | kg/m² | lb/ft² |
|---|---|---|
| Stainless steel 304 | 158.60 | 32.48 |
| Aluminum | 54.00 | 11.06 |
| Copper | 179.20 | 36.70 |
| Brass | 170.00 | 34.82 |
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 |
|---|---|---|
| 100 × 100 mm | 1.57 | 3.46 |
| 150 × 150 mm | 3.53 | 7.79 |
| 200 × 200 mm | 6.28 | 13.85 |
| 250 × 250 mm | 9.81 | 21.63 |
| 300 × 300 mm | 14.13 | 31.15 |
| 400 × 400 mm | 25.12 | 55.38 |
| 500 × 500 mm | 39.25 | 86.53 |
| 1000 × 1000 mm | 157.00 | 346.13 |
| Round disc | kg | lb |
|---|---|---|
| Ø 100 mm | 1.23 | 2.72 |
| Ø 200 mm | 4.93 | 10.87 |
| Ø 300 mm | 11.10 | 24.47 |
| Ø 500 mm | 30.83 | 67.96 |
| Ø 1000 mm | 123.31 | 271.85 |
For any other shape, multiply the area by 157.00 kg/m² (32.16 lb/ft²). For a ring or a plate with a hole, subtract the hole's area.
Sheets per tonne
| Sheet size | Sheets |
|---|---|
| 1250 × 2500 mm | 2.0 |
| 1500 × 3000 mm | 1.4 |
| 2000 × 6000 mm | 0.5 |
Compared with nearby thicknesses
| Thickness | kg/m² | lb/ft² | vs 20 mm |
|---|---|---|---|
| 12 mm | 94.20 | 19.29 | −40 % |
| 16 mm | 125.60 | 25.72 | −20 % |
| 20 mm | 157.00 | 32.16 | — |
| 25 mm | 196.25 | 40.20 | +25 % |
| 30 mm | 235.50 | 48.23 | +50 % |
The nearest standard inch thickness is 3/4 in (19.05 mm, 149.54 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
What is the weight of 20 mm steel plate per square metre?
157.00 kg/m²: 20.00 mm × 7.85 kg per m² per mm.
How much does a 1500 × 3000 mm sheet of 20 mm plate weigh?
706.5 kg (4.5 m² × 157.00 kg/m²). A 1250 × 2500 mm sheet weighs 490.6 kg.
What is the inch equivalent of 20 mm plate?
The nearest standard inch thickness is 3/4 in (19.05 mm). They are not identical, so check tolerances and weights if you substitute.
How much does a 300 × 300 mm piece of 20 mm plate weigh?
14.13 kg (0.09 m² × 157.00 kg/m²), before holes or chamfers.
How much does 20 mm aluminum or stainless plate weigh?
Aluminum 20 mm plate weighs about 54.00 kg/m², stainless steel 304 about 158.60 kg/m².
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