What are I beams?
I-beams, also known as universal beams, are long steel beams with an I-shaped cross section. They come in two varieties: common I-beams and lightweight I-beams. These beams have an I-shaped cross section and are used as structural elements in construction.
Types of I-Beam
I-beams are mainly divided into three categories: ordinary I-beams, lightweight I-beams and wide-flange I-beams.
The classification of I beams is based on the relationship between the height of the flange and the web, resulting in four categories: wide, medium, narrow and wide flange I beams.
Specifications for common, lightweight I-beams range from 4 to 24 inches in height.
Lightweight I-beams have a narrow flange and thin web, making them lighter compared to other I-beams of the same height.
Wide flange I beams, also known as H beams, are characterized by two parallel legs without any slope within the legs. They are considered an economical form of steel profile and are produced using a four-height universal mill, hence the name “universal I-beam”.
National standards have been established for common and lightweight I-beams.
Calculate weight of the I beam
According to the dimensional, shape, weight and allowable deviation specifications described in GB/T 706-2008 for hot-rolled steel profiles, the typical length of hot-rolled I-beams ranges from 5 to 19 meters.
In the market, I beams are generally delivered based on actual weight or theoretical weight. The deviation between the theoretical weight and the actual weight of an I-beam should not exceed a range of -5% to +3%.
Steel Weight Chart for I Beams
Hot Rolled Common I Beam Weight Table
| Model | Size (mm) | Sectional area | Weight | ||||
| H | B | d | t | r1 | cm² | kg/m | |
| 10 | 100 | 68 | 4.5 | 7.6 | 3.3 | 14.3 | 11.2 |
| 12.6 | 126 | 74 | 5 | 8.4 | 3.5 | 18.1 | 14.2 |
| 14 | 140 | 80 | 5.5 | 9.1 | 3.8 | 21.5 | 16.9 |
| 16 | 160 | 88 | 6 | 9.9 | 4 | 26.1 | 20.5 |
| 18 | 180 | 94 | 6.5 | 10.7 | 4.3 | 30.6 | 24.1 |
| 8pm | 200 | 100 | 7 | 11.4 | 4.5 | 35.5 | 27.9 |
| 20b | 200 | 102 | 9 | 11.4 | 4.5 | 39.5 | 31.1 |
| 22a | 220 | 110 | 7.5 | 12.3 | 4.8 | 42 | 33 |
| 22b | 220 | 112 | 9.5 | 12.3 | 4.8 | 46.4 | 36.4 |
| 25a | 250 | 116 | 8 | 13 | 5 | 48.5 | 38.1 |
| 25b | 250 | 118 | 10 | 13 | 5 | 53.5 | 42 |
| 28a | 280 | 122 | 8.5 | 13.7 | 5.3 | 55.45 | 43.4 |
| 28b | 280 | 124 | 10.5 | 13.7 | 5.3 | 61.05 | 47.9 |
| 32a | 320 | 130 | 9.5 | 15 | 5.8 | 67.05 | 52.7 |
| 32b | 320 | 132 | 11.5 | 15 | 5.8 | 73.45 | 57.7 |
| 32c | 320 | 134 | 13.5 | 15 | 5.8 | 79.95 | 62.8 |
| 36a | 360 | 136 | 10 | 15.8 | 6 | 76.3 | 59.9 |
| 36b | 360 | 138 | 12 | 15.8 | 6 | 83.5 | 65.6 |
| 36c | 360 | 140 | 14 | 15.8 | 6 | 90.7 | 71.2 |
| 40a | 400 | 142 | 10.5 | 16.5 | 6.3 | 86.1 | 67.6 |
| 40b | 400 | 144 | 12.5 | 16.5 | 6.3 | 94.1 | 73.8 |
| 40c | 400 | 146 | 14.5 | 16.5 | 6.3 | 102 | 80.1 |
| 45a | 450 | 150 | 11.5 | 18 | 6.8 | 102 | 80.4 |
| 45b | 450 | 152 | 13.5 | 18 | 6.8 | 111 | 87.4 |
| 45c | 450 | 154 | 15.5 | 18 | 6.8 | 120 | 94.5 |
| 50a | 500 | 158 | 12 | 20 | 7 | 119 | 93.6 |
| 50b | 500 | 160 | 14 | 20 | 7 | 129 | 101 |
| 50 cents | 500 | 162 | 16 | 20 | 7 | 139 | 109 |
| 56a | 560 | 166 | 12.5 | 21 | 7.3 | 135.25 | 106.2 |
| 56b | 560 | 168 | 14.5 | 21 | 7.3 | 146.45 | 115 |
| 56c | 560 | 170 | 16.5 | 21 | 7.3 | 157.85 | 123.9 |
| 63a | 630 | 176 | 13 | 22 | 7.5 | 154.9 | 121.6 |
| 63b | 630 | 178 | 15 | 22 | 7.5 | 167.5 | 131.5 |
| 63c | 630 | 180 | 17 | 22 | 7.5 | 180.1 | 141 |
Hot Rolled Lightweight I Beam Weight Table
| Model | Size (mm) | Sectional area | Weight | ||||
| H | B | d | t | r1 | cm² | kg/m | |
| 10 | 100 | 68 | 4.5 | 7.6 | 3.3 | 14.3 | 11.2 |
| 12.6 | 126 | 74 | 5 | 8.4 | 3.5 | 18.1 | 14.2 |
| 14 | 140 | 80 | 5.5 | 9.1 | 3.8 | 21.5 | 16.9 |
| 16 | 160 | 88 | 6 | 9.9 | 4 | 26.1 | 20.5 |
| 18 | 180 | 94 | 6.5 | 10.7 | 4.3 | 30.6 | 24.1 |
| 8pm | 200 | 100 | 7 | 11.4 | 4.5 | 35.5 | 27.9 |
| 20b | 200 | 102 | 9 | 11.4 | 4.5 | 39.5 | 31.1 |
| 22a | 220 | 110 | 7.5 | 12.3 | 4.8 | 42 | 33 |
| 22b | 220 | 112 | 9.5 | 12.3 | 4.8 | 46.4 | 36.4 |
| 25a | 250 | 116 | 8 | 13 | 5 | 48.5 | 38.1 |
| 25b | 250 | 118 | 10 | 13 | 5 | 53.5 | 42 |
| 28a | 280 | 122 | 8.5 | 13.7 | 5.3 | 55.45 | 43.4 |
| 28b | 280 | 124 | 10.5 | 13.7 | 5.3 | 61.05 | 47.9 |
| 32a | 320 | 130 | 9.5 | 15 | 5.8 | 67.05 | 52.7 |
| 32b | 320 | 132 | 11.5 | 15 | 5.8 | 73.45 | 57.7 |
| 32c | 320 | 134 | 13.5 | 15 | 5.8 | 79.95 | 62.8 |
| 36a | 360 | 136 | 10 | 15.8 | 6 | 76.3 | 59.9 |
| 36b | 360 | 138 | 12 | 15.8 | 6 | 83.5 | 65.6 |
| 36c | 360 | 140 | 14 | 15.8 | 6 | 90.7 | 71.2 |
| 40a | 400 | 142 | 10.5 | 16.5 | 6.3 | 86.1 | 67.6 |
| 40b | 400 | 144 | 12.5 | 16.5 | 6.3 | 94.1 | 73.8 |
| 40c | 400 | 146 | 14.5 | 16.5 | 6.3 | 102 | 80.1 |
| 45a | 450 | 150 | 11.5 | 18 | 6.8 | 102 | 80.4 |
| 45b | 450 | 152 | 13.5 | 18 | 6.8 | 111 | 87.4 |
| 45c | 450 | 154 | 15.5 | 18 | 6.8 | 120 | 94.5 |
| 50a | 500 | 158 | 12 | 20 | 7 | 119 | 93.6 |
| 50b | 500 | 160 | 14 | 20 | 7 | 129 | 101 |
| 50 cents | 500 | 162 | 16 | 20 | 7 | 139 | 109 |
| 56a | 560 | 166 | 12.5 | 21 | 7.3 | 135.25 | 106.2 |
| 56b | 560 | 168 | 14.5 | 21 | 7.3 | 146.45 | 115 |
| 56c | 560 | 170 | 16.5 | 21 | 7.3 | 157.85 | 123.9 |
| 63a | 630 | 176 | 13 | 22 | 7.5 | 154.9 | 121.6 |
| 63b | 630 | 178 | 15 | 22 | 7.5 | 167.5 | 131.5 |
| 63c | 630 | 180 | 17 | 22 | 7.5 | 180.1 | 141 |
