The density of an alloy is determined by its chemical composition – the purer alloys are lighter and those which have a greater content of other elements are heavier. As can be seen from the chart, the density of individual alloys can vary from 2.63 to 2.85 g/cm3 (0.095 to 0.103 lbs/in3) or 7.7 %. Therefore in calculating the weight of a component it is important to use the density of the alloy concerned.
Alloy | g/cm3 | lbs/in3 |
2011 | 2.82 | 0.102 |
2014 | 2.80 | 0.101 |
2024 | 2.77 | 0.100 |
2031 | 2.77 | 0.100 |
2124 | 2.77 | 0.100 |
2618 | 2.77 | 0.100 |
5083 | 2.66 | 0.096 |
5086 | 2.66 | 0.096 |
5251 | 2.69 | 0.097 |
6061 | 2.71 | 0.098 |
6082 | 2.71 | 0.098 |
7010 | 2.82 | 0.102 |
7017 | 2.76 | 0.100 |
7019 | 2.76 | 0.100 |
7050 | 2.82 | 0.102 |
7075 | 2.80 | 0.101 |
7175 | 2.80 | 0.101 |
The following chart is a sample of some of the common diameters that are available. Please contact us for details of our full product range and current stock availability.
The weight of round bar is easily calculated. Simply multiply the appropriate alloy density (see chart above) by the length and diameter squared of the required part (see worked example below and note that we have used the density of alloy 2014 as the basis for our calculations).
Metric | density (g/cm³) | x | D² | x | L | x | π / 4000 | weight | |
---|---|---|---|---|---|---|---|---|---|
Example: | 2.80 g/cm³ | x | 20 mm² | x | 1 m | x | π / 4000 | = | 0.880 kg |
Imperial | density (lbs/in³) | x | D² | x | L | x | π / 4 | weight | |
Example: | 0.101 lbs/in³ | x | 0.75 in² | x | 12 in | x | π / 4 | = | 0.536 lbs |
For imperial weight calculations certain measurements (fractions) need to be converted to decimal inches. Please see the conversion table.
For an accurate calculation it is also important to allow for the rolled/drawn tolerances on diameter defined by the manufacturing specification – please contact us for details.
Diameter | Weight | ||
mm | in | kg/m | lbs/ft |
6.35 | 1/4 | 0.089 | 0.060 |
10.0 | 0.220 | ||
12.7 | 1/2 | 0.355 | 0.238 |
15.0 | 0.495 | ||
19.1 | 3/4 | 0.798 | 0.536 |
20.0 | 0.880 | ||
25.0 | 1.375 | ||
25.4 | 1 | 1.419 | 0.952 |
30.0 | 1.979 | ||
38.1 | 1 1/2 | 3.193 | 2.142 |
40.0 | 3.519 | ||
50.0 | 5.499 | ||
50.8 | 2 | 5.676 | 3.808 |
60.0 | 7.918 | ||
63.5 | 2 1/2 | 8.869 | 5.950 |
70.0 | 10.78 | ||
76.2 | 3 | 12.77 | 8.568 |
80.0 | 14.08 | ||
90.0 | 17.82 | ||
100.0 | 21.99 | ||
101.6 | 4 | 22.70 | 15.230 |
110.0 | 26.61 | ||
120.0 | 31.67 | ||
127.0 | 5 | 35.47 | 23.801 |
130.0 | 37.17 | ||
150.0 | 49.49 | ||
152.4 | 6 | 51.08 | 34.273 |
177.8 | 7 | 69.53 | 46.649 |
180.0 | 71.26 | ||
200.0 | 87.98 | ||
203.2 | 8 | 90.81 | 60.922 |
210.0 | 96.99 | ||
220.0 | 106.5 | ||
228.6 | 9 | 114.9 | 77.114 |
250.0 | 137.5 | ||
254.0 | 10 | 141.9 | 95.203 |
260.0 | 148.7 | ||
279.4 | 11 | 171.7 | 115.195 |
304.8 | 12 | 204.3 | 137.092 |
330.2 | 13 | 239.8 | 160.892 |
355.6 | 14 | 278.1 | 186.597 |
400.0 | 351.9 | ||
406.4 | 16 | 363.3 | 243.719 |
The following chart is a sample of some of the common thicknesses that are available. Please contact us for details of our full product range and current stock availability.
The weight of square bar is easily calculated. Simply multiply the appropriate alloy density (see chart on previous page) by the length and thickness squared of the required part (see worked example below and note that we have used the density of alloy 2014 as the basis for our calculations).
Metric | density (g/cm³) | x | T² | x | L / 1000 | weight | |||
---|---|---|---|---|---|---|---|---|---|
Example: | 2.80 g/cm³ | x | 10 mm² | x | 1 m / 1000 | = | 0.280 kg | ||
Imperial | density (lbs/in³) | x | T² | x | L | weight | |||
Example: | 0.101 lbs/in³ | x | 4 in² | x | 12 in | = | 19.39 lbs |
For imperial weight calculations certain measurements (fractions) need to be converted to decimal inches. Please see the conversion table.
For an accurate calculation it is also important to allow for the rolled/drawn tolerances on section defined by the manufacturing specification – please contact us for details.
Thickness | Weight | ||
mm | in | kg/m | lbs/ft |
10 | 0.28 | ||
12.7 | 1/2 | 0.45 | 0.30 |
15 | 0.63 | ||
19.05 | 3/4 | 1.02 | 0.68 |
20 | 1.12 | ||
25.4 | 1 | 1.81 | 1.21 |
30 | 2.52 | ||
38.1 | 1 1/2 | 4.06 | 2.73 |
40 | 4.48 | ||
44.4 | 1 3/4 | 5.52 | 3.71 |
50 | 7.00 | ||
50.8 | 2 | 7.23 | 4.85 |
60 | 10.08 | ||
63.5 | 2 1/2 | 11.29 | 7.57 |
70 | 13.72 | ||
76.2 | 3 | 16.26 | 10.91 |
80 | 17.92 | ||
90 | 22.68 | ||
100 | 28.00 | ||
101.6 | 4 | 28.90 | 19.39 |
110 | 33.88 | ||
120 | 40.32 | ||
127 | 5 | 45.16 | 30.30 |
150 | 63.00 | ||
152.4 | 6 | 65.03 | 43.63 |
160 | 71.68 | ||
177.8 | 7 | 88.51 | 59.39 |
180 | 90.72 | ||
200 | 112.00 | ||
203.2 | 8 | 115.61 | 77.57 |
The following charts are samples of some of the common thicknesses and sizes that are available. Please contact us for details of our full product range and current stock availability.
The weight of flat bar is easily calculated. Simply multiply the appropriate alloy density (see chart on page 46) by the length, width, and thickness of the required part (see worked example below and note that we have used the density of alloy 2014 as the basis for our calculations).
Metric | density (g/cm³) | x | T | x | W | x | L / 1000 | weight | |
---|---|---|---|---|---|---|---|---|---|
Example: | 2.80 g/cm³ | x | 50 mm | x | 20 mm | x | 1 m / 1000 | = | 2.8 kg |
Imperial | density (lbs/in³) | x | T | x | W | x | L | weight | |
Example: | 0.101 lbs/in³ | x | 0.50 in | x | 2 in | x | 12 in | = | 1.21 lbs |
For imperial weight calculations certain measurements (fractions) need to be converted to decimal inches. Please see the conversion table.
For an accurate calculation it is also important to allow for the rolled/drawn tolerances on section defined by the manufacturing specification – please contact us for details.
Thickness | Width | Weight |
mm | mm | kg/m |
5 | 20 | 0.28 |
5 | 25 | 0.35 |
5 | 30 | 0.42 |
5 | 40 | 0.56 |
5 | 50 | 0.7 |
5 | 70 | 1 |
5 | 100 | 1.4 |
10 | 15 | 0.42 |
10 | 20 | 0.56 |
10 | 25 | 0.7 |
10 | 30 | 0.84 |
10 | 40 | 1.1 |
10 | 45 | 1.3 |
10 | 50 | 1.4 |
10 | 60 | 1.7 |
10 | 70 | 2 |
10 | 80 | 2.2 |
10 | 90 | 2.5 |
10 | 100 | 2.8 |
15 | 20 | 0.84 |
15 | 25 | 1.05 |
15 | 30 | 1.26 |
15 | 40 | 1.7 |
15 | 45 | 1.9 |
15 | 50 | 2.1 |
15 | 60 | 2.5 |
20 | 25 | 1.4 |
20 | 30 | 1.68 |
20 | 40 | 2.2 |
20 | 45 | 2.5 |
20 | 50 | 2.8 |
20 | 55 | 3.1 |
20 | 60 | 3.4 |
20 | 70 | 3.9 |
20 | 80 | 4.5 |
20 | 90 | 5 |
20 | 100 | 5.6 |
25 | 30 | 2.1 |
25 | 40 | 2.8 |
25 | 45 | 3.2 |
25 | 50 | 3.5 |
30 | 40 | 3.4 |
30 | 45 | 3.8 |
30 | 50 | 4.2 |
30 | 55 | 4.6 |
30 | 60 | 5 |
30 | 70 | 5.9 |
30 | 80 | 6.7 |
30 | 90 | 7.6 |
30 | 100 | 8.4 |
35 | 40 | 3.9 |
35 | 45 | 4.4 |
35 | 50 | 4.9 |
40 | 50 | 5.6 |
40 | 60 | 6.7 |
40 | 70 | 7.8 |
40 | 80 | 9 |
40 | 90 | 10.1 |
40 | 100 | 11.2 |
50 | 60 | 8.4 |
50 | 70 | 9.8 |
50 | 80 | 11.2 |
50 | 90 | 12.6 |
50 | 100 | 14 |
Thickness | Width | Weight |
in | in | lbs/ft |
1/4 | 1 | 0.30 |
3/8 | 5/8 | 0.28 |
1/2 | 1 | 0.61 |
1/2 | 1 1/2 | 0.91 |
1/2 | 1 1/4 | 0.76 |
1/2 | 1 3/4 | 1.06 |
1/2 | 2 | 1.21 |
1/2 | 2 1/2 | 1.52 |
1/2 | 2 1/4 | 1.36 |
1/2 | 2 3/4 | 1.67 |
1/2 | 3 | 1.82 |
1/2 | 3 1/2 | 2.12 |
1/2 | 3/4 | 0.45 |
1/2 | 4 | 2.42 |
5/8 | 1 1/2 | 1.14 |
5/8 | 1 1/4 | 0.95 |
5/8 | 1 3/4 | 1.33 |
5/8 | 2 | 1.52 |
5/8 | 2 1/2 | 1.89 |
5/8 | 2 1/4 | 1.70 |
5/8 | 2 3/4 | 2.08 |
5/8 | 3 | 2.27 |
5/8 | 3 1/2 | 2.65 |
5/8 | 3/4 | 0.57 |
5/8 | 4 | 3.03 |
3/4 | 1 | 0.91 |
3/4 | 1 1/2 | 1.36 |
3/4 | 1 1/4 | 1.14 |
3/4 | 1 3/4 | 1.59 |
3/4 | 2 | 1.82 |
3/4 | 2 1/2 | 2.27 |
3/4 | 2 1/4 | 2.05 |
3/4 | 2 3/4 | 2.50 |
3/4 | 3 | 2.73 |
3/4 | 3 1/2 | 3.18 |
3/4 | 4 | 3.64 |
1 | 1 1/2 | 1.82 |
1 | 1 3/4 | 2.12 |
1 | 2 | 2.42 |
1 | 2 1/2 | 3.03 |
1 | 2 1/4 | 2.73 |
1 | 2 3/4 | 3.33 |
1 | 3 | 3.64 |
1 | 3 1/2 | 4.24 |
1 | 4 | 4.85 |
1 1/4 | 1 3/4 | 2.65 |
1 1/4 | 2 | 3.03 |
1 1/4 | 2 1/2 | 3.79 |
1 1/4 | 2 1/4 | 3.41 |
1 1/4 | 2 3/4 | 4.17 |
1 1/4 | 3 | 4.55 |
1 1/4 | 3 1/2 | 5.30 |
1 1/4 | 4 | 6.06 |
1 1/2 | 1 3/4 | 3.18 |
1 1/2 | 2 | 3.64 |
1 1/2 | 2 1/2 | 4.55 |
1 1/2 | 2 1/4 | 4.09 |
1 1/2 | 2 3/4 | 5.00 |
1 1/2 | 3 | 5.45 |
1 1/2 | 3 1/2 | 6.36 |
1 1/2 | 4 | 7.27 |
2 | 2 1/2 | 6.06 |
2 | 2 1/4 | 5.45 |
2 | 2 3/4 | 6.67 |
2 | 3 | 7.27 |
2 | 3 1/2 | 8.48 |
2 | 4 | 9.70 |
2 1/4 | 2 3/4 | 7.50 |
2 1/4 | 3 1/2 | 9.54 |
2 1/2 | 3 | 9.09 |
2 1/2 | 3 1/2 | 10.61 |
2 1/2 | 4 | 12.12 |
3 | 3 1/2 | 12.73 |
3 | 4 | 14.54 |
3 1/2 | 4 | 16.97 |