4 mm steel plate weight
31.40 kg/m² · 6.43 lb/ft²
A 4 mm (4.00 mm) carbon steel plate weighs 31.40 kg per square metre: 4.000 mm × 7.85 kg/(m²·mm).
Weight of standard plate sizes
| Plate size | kg | lb |
|---|---|---|
| 1000 × 2000 mm | 62.8 | 138.5 |
| 1250 × 2500 mm | 98.1 | 216.3 |
| 1500 × 3000 mm | 141.3 | 311.5 |
| 1500 × 6000 mm | 282.6 | 623.0 |
| 2000 × 6000 mm | 376.8 | 830.7 |
Same thickness in other metals
| Material | kg/m² | lb/ft² |
|---|---|---|
| Stainless steel 304 | 31.72 | 6.50 |
| Aluminum | 10.80 | 2.21 |
| Copper | 35.84 | 7.34 |
| Brass | 34.00 | 6.96 |
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 | 0.31 | 0.69 |
| 150 × 150 mm | 0.71 | 1.56 |
| 200 × 200 mm | 1.26 | 2.77 |
| 250 × 250 mm | 1.96 | 4.33 |
| 300 × 300 mm | 2.83 | 6.23 |
| 400 × 400 mm | 5.02 | 11.08 |
| 500 × 500 mm | 7.85 | 17.31 |
| 1000 × 1000 mm | 31.40 | 69.23 |
| Round disc | kg | lb |
|---|---|---|
| Ø 100 mm | 0.25 | 0.54 |
| Ø 200 mm | 0.99 | 2.17 |
| Ø 300 mm | 2.22 | 4.89 |
| Ø 500 mm | 6.17 | 13.59 |
| Ø 1000 mm | 24.66 | 54.37 |
For any other shape, multiply the area by 31.40 kg/m² (6.43 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 | 10.2 |
| 1500 × 3000 mm | 7.1 |
| 2000 × 6000 mm | 2.7 |
Compared with nearby thicknesses
| Thickness | kg/m² | lb/ft² | vs 4 mm |
|---|---|---|---|
| 2 mm | 15.70 | 3.22 | −50 % |
| 3 mm | 23.55 | 4.82 | −25 % |
| 4 mm | 31.40 | 6.43 | — |
| 5 mm | 39.25 | 8.04 | +25 % |
| 6 mm | 47.10 | 9.65 | +50 % |
The nearest standard inch thickness is 3/16 in (4.76 mm, 37.39 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
What is the weight of 4 mm steel plate per square metre?
31.40 kg/m²: 4.00 mm × 7.85 kg per m² per mm.
How much does a 1500 × 3000 mm sheet of 4 mm plate weigh?
141.3 kg (4.5 m² × 31.40 kg/m²). A 1250 × 2500 mm sheet weighs 98.1 kg.
What is the inch equivalent of 4 mm plate?
The nearest standard inch thickness is 3/16 in (4.76 mm). They are not identical, so check tolerances and weights if you substitute.
How much does a 300 × 300 mm piece of 4 mm plate weigh?
2.83 kg (0.09 m² × 31.40 kg/m²), before holes or chamfers.
How much does 4 mm aluminum or stainless plate weigh?
Aluminum 4 mm plate weighs about 10.80 kg/m², stainless steel 304 about 31.72 kg/m².
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