40 mm steel plate weight
314.00 kg/m² · 64.31 lb/ft²
A 40 mm (40.00 mm) carbon steel plate weighs 314.00 kg per square metre: 40.000 mm × 7.85 kg/(m²·mm).
Weight of standard plate sizes
| Plate size | kg | lb |
|---|---|---|
| 1000 × 2000 mm | 628.0 | 1,384.5 |
| 1250 × 2500 mm | 981.3 | 2,163.3 |
| 1500 × 3000 mm | 1,413.0 | 3,115.1 |
| 1500 × 6000 mm | 2,826.0 | 6,230.3 |
| 2000 × 6000 mm | 3,768.0 | 8,307.0 |
Same thickness in other metals
| Material | kg/m² | lb/ft² |
|---|---|---|
| Stainless steel 304 | 317.20 | 64.97 |
| Aluminum | 108.00 | 22.12 |
| Copper | 358.40 | 73.41 |
| Brass | 340.00 | 69.64 |
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 | 3.14 | 6.92 |
| 150 × 150 mm | 7.07 | 15.58 |
| 200 × 200 mm | 12.56 | 27.69 |
| 250 × 250 mm | 19.63 | 43.27 |
| 300 × 300 mm | 28.26 | 62.30 |
| 400 × 400 mm | 50.24 | 110.76 |
| 500 × 500 mm | 78.50 | 173.06 |
| 1000 × 1000 mm | 314.00 | 692.25 |
| Round disc | kg | lb |
|---|---|---|
| Ø 100 mm | 2.47 | 5.44 |
| Ø 200 mm | 9.86 | 21.75 |
| Ø 300 mm | 22.20 | 48.93 |
| Ø 500 mm | 61.65 | 135.92 |
| Ø 1000 mm | 246.62 | 543.69 |
For any other shape, multiply the area by 314.00 kg/m² (64.31 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 | 1.0 |
| 1500 × 3000 mm | 0.7 |
| 2000 × 6000 mm | 0.3 |
Compared with nearby thicknesses
| Thickness | kg/m² | lb/ft² | vs 40 mm |
|---|---|---|---|
| 25 mm | 196.25 | 40.20 | −38 % |
| 30 mm | 235.50 | 48.23 | −25 % |
| 40 mm | 314.00 | 64.31 | — |
| 50 mm | 392.50 | 80.39 | +25 % |
The nearest standard inch thickness is 1-1/2 in (38.10 mm, 299.08 kg/m²). Plate this thick is used for heavy base plates, crane girder flanges, machine beds, press frames, pressure vessels and wear parts.
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 40 mm steel plate per square metre?
314.00 kg/m²: 40.00 mm × 7.85 kg per m² per mm.
How much does a 1500 × 3000 mm sheet of 40 mm plate weigh?
1,413.0 kg (4.5 m² × 314.00 kg/m²). A 1250 × 2500 mm sheet weighs 981.3 kg.
What is the inch equivalent of 40 mm plate?
The nearest standard inch thickness is 1-1/2 in (38.10 mm). They are not identical, so check tolerances and weights if you substitute.
How much does a 300 × 300 mm piece of 40 mm plate weigh?
28.26 kg (0.09 m² × 314.00 kg/m²), before holes or chamfers.
How much does 40 mm aluminum or stainless plate weigh?
Aluminum 40 mm plate weighs about 108.00 kg/m², stainless steel 304 about 317.20 kg/m².
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