12 mm steel plate weight
94.20 kg/m² · 19.29 lb/ft²
A 12 mm (12.00 mm) carbon steel plate weighs 94.20 kg per square metre: 12.000 mm × 7.85 kg/(m²·mm).
Weight of standard plate sizes
| Plate size | kg | lb |
|---|---|---|
| 1000 × 2000 mm | 188.4 | 415.4 |
| 1250 × 2500 mm | 294.4 | 649.0 |
| 1500 × 3000 mm | 423.9 | 934.5 |
| 1500 × 6000 mm | 847.8 | 1,869.1 |
| 2000 × 6000 mm | 1,130.4 | 2,492.1 |
Same thickness in other metals
| Material | kg/m² | lb/ft² |
|---|---|---|
| Stainless steel 304 | 95.16 | 19.49 |
| Aluminum | 32.40 | 6.64 |
| Copper | 107.52 | 22.02 |
| Brass | 102.00 | 20.89 |
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 | 0.94 | 2.08 |
| 150 × 150 mm | 2.12 | 4.67 |
| 200 × 200 mm | 3.77 | 8.31 |
| 250 × 250 mm | 5.89 | 12.98 |
| 300 × 300 mm | 8.48 | 18.69 |
| 400 × 400 mm | 15.07 | 33.23 |
| 500 × 500 mm | 23.55 | 51.92 |
| 1000 × 1000 mm | 94.20 | 207.68 |
| Round disc | kg | lb |
|---|---|---|
| Ø 100 mm | 0.74 | 1.63 |
| Ø 200 mm | 2.96 | 6.52 |
| Ø 300 mm | 6.66 | 14.68 |
| Ø 500 mm | 18.50 | 40.78 |
| Ø 1000 mm | 73.98 | 163.11 |
For any other shape, multiply the area by 94.20 kg/m² (19.29 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 | 3.4 |
| 1500 × 3000 mm | 2.4 |
| 2000 × 6000 mm | 0.9 |
Compared with nearby thicknesses
| Thickness | kg/m² | lb/ft² | vs 12 mm |
|---|---|---|---|
| 8 mm | 62.80 | 12.86 | −33 % |
| 10 mm | 78.50 | 16.08 | −17 % |
| 12 mm | 94.20 | 19.29 | — |
| 16 mm | 125.60 | 25.72 | +33 % |
| 20 mm | 157.00 | 32.16 | +67 % |
The nearest standard inch thickness is 1/2 in (12.70 mm, 99.70 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 12 mm steel plate per square metre?
94.20 kg/m²: 12.00 mm × 7.85 kg per m² per mm.
How much does a 1500 × 3000 mm sheet of 12 mm plate weigh?
423.9 kg (4.5 m² × 94.20 kg/m²). A 1250 × 2500 mm sheet weighs 294.4 kg.
What is the inch equivalent of 12 mm plate?
The nearest standard inch thickness is 1/2 in (12.70 mm). They are not identical, so check tolerances and weights if you substitute.
How much does a 300 × 300 mm piece of 12 mm plate weigh?
8.48 kg (0.09 m² × 94.20 kg/m²), before holes or chamfers.
How much does 12 mm aluminum or stainless plate weigh?
Aluminum 12 mm plate weighs about 32.40 kg/m², stainless steel 304 about 95.16 kg/m².
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