30 mm steel plate weight
235.50 kg/m² · 48.23 lb/ft²
A 30 mm (30.00 mm) carbon steel plate weighs 235.50 kg per square metre: 30.000 mm × 7.85 kg/(m²·mm).
Weight of standard plate sizes
| Plate size | kg | lb |
|---|---|---|
| 1000 × 2000 mm | 471.0 | 1,038.4 |
| 1250 × 2500 mm | 735.9 | 1,622.5 |
| 1500 × 3000 mm | 1,059.8 | 2,336.3 |
| 1500 × 6000 mm | 2,119.5 | 4,672.7 |
| 2000 × 6000 mm | 2,826.0 | 6,230.3 |
Same thickness in other metals
| Material | kg/m² | lb/ft² |
|---|---|---|
| Stainless steel 304 | 237.90 | 48.73 |
| Aluminum | 81.00 | 16.59 |
| Copper | 268.80 | 55.05 |
| Brass | 255.00 | 52.23 |
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 | 2.36 | 5.19 |
| 150 × 150 mm | 5.30 | 11.68 |
| 200 × 200 mm | 9.42 | 20.77 |
| 250 × 250 mm | 14.72 | 32.45 |
| 300 × 300 mm | 21.20 | 46.73 |
| 400 × 400 mm | 37.68 | 83.07 |
| 500 × 500 mm | 58.88 | 129.80 |
| 1000 × 1000 mm | 235.50 | 519.19 |
| Round disc | kg | lb |
|---|---|---|
| Ø 100 mm | 1.85 | 4.08 |
| Ø 200 mm | 7.40 | 16.31 |
| Ø 300 mm | 16.65 | 36.70 |
| Ø 500 mm | 46.24 | 101.94 |
| Ø 1000 mm | 184.96 | 407.77 |
For any other shape, multiply the area by 235.50 kg/m² (48.23 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 | 1.4 |
| 1500 × 3000 mm | 0.9 |
| 2000 × 6000 mm | 0.4 |
Compared with nearby thicknesses
| Thickness | kg/m² | lb/ft² | vs 30 mm |
|---|---|---|---|
| 20 mm | 157.00 | 32.16 | −33 % |
| 25 mm | 196.25 | 40.20 | −17 % |
| 30 mm | 235.50 | 48.23 | — |
| 40 mm | 314.00 | 64.31 | +33 % |
| 50 mm | 392.50 | 80.39 | +67 % |
The nearest standard inch thickness is 1-1/4 in (31.75 mm, 249.24 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 30 mm steel plate per square metre?
235.50 kg/m²: 30.00 mm × 7.85 kg per m² per mm.
How much does a 1500 × 3000 mm sheet of 30 mm plate weigh?
1,059.8 kg (4.5 m² × 235.50 kg/m²). A 1250 × 2500 mm sheet weighs 735.9 kg.
What is the inch equivalent of 30 mm plate?
The nearest standard inch thickness is 1-1/4 in (31.75 mm). They are not identical, so check tolerances and weights if you substitute.
How much does a 300 × 300 mm piece of 30 mm plate weigh?
21.20 kg (0.09 m² × 235.50 kg/m²), before holes or chamfers.
How much does 30 mm aluminum or stainless plate weigh?
Aluminum 30 mm plate weighs about 81.00 kg/m², stainless steel 304 about 237.90 kg/m².
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