3 mm steel plate weight
23.55 kg/m² · 4.82 lb/ft²
A 3 mm (3.00 mm) carbon steel plate weighs 23.55 kg per square metre: 3.000 mm × 7.85 kg/(m²·mm).
Weight of standard plate sizes
| Plate size | kg | lb |
|---|---|---|
| 1000 × 2000 mm | 47.1 | 103.8 |
| 1250 × 2500 mm | 73.6 | 162.2 |
| 1500 × 3000 mm | 106.0 | 233.6 |
| 1500 × 6000 mm | 212.0 | 467.3 |
| 2000 × 6000 mm | 282.6 | 623.0 |
Same thickness in other metals
| Material | kg/m² | lb/ft² |
|---|---|---|
| Stainless steel 304 | 23.79 | 4.87 |
| Aluminum | 8.10 | 1.66 |
| Copper | 26.88 | 5.51 |
| Brass | 25.50 | 5.22 |
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 | 0.24 | 0.52 |
| 150 × 150 mm | 0.53 | 1.17 |
| 200 × 200 mm | 0.94 | 2.08 |
| 250 × 250 mm | 1.47 | 3.24 |
| 300 × 300 mm | 2.12 | 4.67 |
| 400 × 400 mm | 3.77 | 8.31 |
| 500 × 500 mm | 5.89 | 12.98 |
| 1000 × 1000 mm | 23.55 | 51.92 |
| Round disc | kg | lb |
|---|---|---|
| Ø 100 mm | 0.18 | 0.41 |
| Ø 200 mm | 0.74 | 1.63 |
| Ø 300 mm | 1.66 | 3.67 |
| Ø 500 mm | 4.62 | 10.19 |
| Ø 1000 mm | 18.50 | 40.78 |
For any other shape, multiply the area by 23.55 kg/m² (4.82 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 | 13.6 |
| 1500 × 3000 mm | 9.4 |
| 2000 × 6000 mm | 3.5 |
Compared with nearby thicknesses
The nearest standard inch thickness is 1/8 in (3.18 mm, 24.92 kg/m²). Plate this thin is usually sold as sheet and used for covers, cladding, ducting, panels and light brackets.
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 3 mm steel plate per square metre?
23.55 kg/m²: 3.00 mm × 7.85 kg per m² per mm.
How much does a 1500 × 3000 mm sheet of 3 mm plate weigh?
106.0 kg (4.5 m² × 23.55 kg/m²). A 1250 × 2500 mm sheet weighs 73.6 kg.
What is the inch equivalent of 3 mm plate?
The nearest standard inch thickness is 1/8 in (3.18 mm). They are not identical, so check tolerances and weights if you substitute.
How much does a 300 × 300 mm piece of 3 mm plate weigh?
2.12 kg (0.09 m² × 23.55 kg/m²), before holes or chamfers.
How much does 3 mm aluminum or stainless plate weigh?
Aluminum 3 mm plate weighs about 8.10 kg/m², stainless steel 304 about 23.79 kg/m².
Steel plate weight chart · Flat bar weight chart · Steel weight calculator