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I Beams

I-beams, also known as H-Beams have and I or H cross section.  The horizontal elements of the “I” are flanges while the vertical element is the “web”.  I-Beams are commonly made of structural steel but can be formed out of aluminum.  I-beams are most widely used in construction and can have an application for use in both beams as well as columns.  Infra-Metals offers many different sizes, lengths and specifications for I -beams.

Specifications

ASTM A36 – Standard specification for carbon structural steel.  This specification covers shapes of structural quality for use in riveted, bolted, or welded construction of bridges and buildings, and for general structural purposes.

ASTM A572 – Standard specification for high-strength low-alloy structural steel.  This specification covers five grades of high-strength low-alloy shapes intended for riveted, bolted, or welded construction of bridges, or for other construction applications.

ASTM A588 – Standard specification for high-strength low-alloy structural steel.  This specification covers shapes for welded, riveted, or bolted construction but intended primarily for use in welded bridges and buildings where savings in weight or added durability is important.  The atmospheric corrosion resistance of this steel in most environments is substantially better than that of carbon steels with or without copper addition.

ASTM A709 – Standard specification for carbon and high-strength low-alloy shapes.  This specification covers shapes, and bars intended for use in bridges.  Seven grades are available in four yield strengths.

ASTM A992 – Standard specification for steel for structural shapes for use in building framing.  This specification covers rolled shapes for use in building framing or bridges, or for general structural purposes.

Miscellaneous Beams
Standard Lengths 20′ and 40′

ibeamstandard

A B C D
Section Weight Depth of Flange Flange Web
Number Per/Foot Section Width Thickness Thickness
lb. in. in. in. in.
M6 4.4 6.00 1.844 0.171 0.114
M8 6.5 8.00 2.281 0.189 0.135
M10 8 9.95 2.690 0.182 0.141
9 10.00 2.690 0.021 0.157
M12 10 11.97 3.250 0.180 0.149
10.8 11.97 3.065 0.210 0.160
11.8 12.00 3.065 0.225 0.177
M12.5 11.6 12.50 3.500 0.211 0.155
12.4 12.53 3.750 0.228 0.155

Standard “I” Beams
Standard Lengths 20′-60′

ibeamstandard

A B C D
Section Weight Depth of Flange Flange Web
Number Per/Foot Section Width Thickness Thickness
lb. in. in. in. in.
S3 5.7 3.00 2.330 0.260 0.170
7.5 3.00 2.509 0.026 0.349
S4 7.7 4.00 2.660 0.293 0.193
9.5 4.00 2.796 0.293 0.326
S5 10 5.00 3.000 0.326 0.214
14.75 5.00 3.284 0.326 0.494
S6 12.5 6.00 3.332 0.359 0.232
17.25 6.00 3.565 0.359 0.465
S7 15.3 7.00 3.662 0.392 0.252
20 7.00 3.860 0.392 0.450
S8 18.4 8.00 4.001 0.425 0.271
23 8.00 4.171 0.425 0.441
S10 25.4 10.00 4.661 0.491 0.311
35 10.00 4.944 0.491 0.594
S12 31.8 12.00 5.000 0.544 0.350
35 12.00 5.078 0.544 0.428
40.8 12.00 5.252 0.659 0.462
50 12.00 5.477 0.659 0.687
S15 42.9 15.00 5.501 0.622 0.411
50 15.00 5.640 0.622 0.550
S18 54.7 18.00 6.001 0.691 0.461
70 18.00 6.251 0.691 0.711
S20 66 20.00 6.255 0.795 0.505
75 20.00 6.385 0.795 0.635
86 20.30 7.060 0.920 0.660
96 20.30 7.200 0.920 0.800
S24 80 24.00 7.000 0.870 0.500
90 24.00 7.125 0.870 0.625
100 24.00 7.245 0.870 0.745
106 24.50 7.870 1.090 0.620
121 24.50 8.050 1.090 0.800
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