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American Standard Beams

American Standard Beams ASTM A6 - Imperial units

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american wide flange beam

Properties in imperial units of American Standard Beams according ASTM A6 are indicated below.

Designation Dimensions Static Parameters
Moment of Inertia Section Modulus
Imperial
(in x lb/ft)		 Depth
h
(in)		 Width
w
(in)		 Web Thickness
s
(in)		 Sectional Area
(in2)		 Weight
(lb/ft)		 Ix
(in4)		 Iy
(in4)		 Wx
(in3)		 Wy
(in3)
S 24 x 121 24.5 8.050 0.800 35.6 121 3160 83.3 258 20.7
S 24 x 106 24.5 7.780 0.620 31.2 106 2940 77.1 240 19.6
S 24 x 100 24 7.425 0.745 29.3 100 2390 47.7 199 13.2
S 24 x 90 24 7.125 0.625 26.5 90 2250 44.9 187 12.6
S 24 x 80 24 7.000 0.500 23.5 80 2100 42.2 175 12.1
                   
S 20 x 96 20.3 7.200 0.800 28.2 96 1670 50.2 165 13.9
S 20 x 86 20.3 7.060 0.660 25.3 86 1580 46.8 155 13.3
S 20 x 75 20 6.385 0.635 22.0 75 1280 29.8 128 9.32
S 20 x 66 20 6.255 0.505 19.4 66 1190 27.7 119 8.85
                   
S 18 x 70 18 6.251 0.711 20.6 70 926 24.1 103 7.72
S 18 x 54.7 18 6.001 0.461 16.1 54.7 804 20.8 89.4 6.94
                   
S 15 x 50 15 5.640 0.550 14.7 50 486 15.7 64.8 5.57
S 15 x 42.9 15 5.501 0.411 12.6 42.9 447 14.4 59.6 5.23
                   
S 12 x 50 12 5.477 0.687 14.7 50 305 15.7 20.8 5.74
S 12 x 40.8 12 5.252 0.462 12.0 40.8 272 13.6 45.4 5.16
S 12 x 35 12 5.078 0.428 10.3 35 229 9.87 38.2 3.89
S 12 x 31.8 12 5.000 0.350 9.35 31.8 218 9.36 36.4 3.74
                   
S 10 x 35 10 4.944 0.594 10.3 35 147 8.36 29.4 3.38
S 10 x 25.4 10 4.661 0.311 7.46 25.4 124 6.79 24.7 2.91
                   
S 8 x 23 8 4.171 0.441 6.77 23 6409 4.31 16.2 2.07
S 8 x 18.4 8 4.001 0.271 5.41 18.4 57.6 3.73 14.4 1.86
                   
S 7 x 20 7 3.860 0.450 5.88 20 42.4 3.17 12.1 1.64
S 7 x 15.3 7 3.662 0.252 4.5 15.3 36.7 2.64 10.5 1.44
                   
S 6 x 17.25 6 3.565 0.465 5.07 17.25 26.3 2.31 8.77 1.30
S 6 x 12.5 6 3.332 0.232 3.67 12.5 22.1 1.82 7.37 1.09
                   
S 5 x 14.75 5 3.284 0.494 4.34 14.75 15.2 1.67 6.09 1.01
S 5 x 10 5 3.004 0.214 2.94 10 12.3 1.22 4.92 0.81
                   
S 4 x 9.5 4 2.796 0.326 2.79 9.5 6.79 0.903 3.39 0.65
S 4 x 7.7 4 2.663 0.193 2.26 7.7 6.08 0.764 3.04 0.57
                   
S 3 x 7.5 3 2.509 0.349 2.21 7.5 2.93 0.586 1.95 0.47
S 3 x 5.7 3 2.330 0.170 1.67 5.7 2.52 0.455 1.68 0.39
  • 1 cm4 = 10-8 m = 104 mm
  • 1 in4 = 4.16x105 mm4 = 41.6 cm4
  • 1 cm3 = 10-6 m = 103 mm

 

  • I = moment of inertia
  • W = section modulus

The standard method for specifying the dimension of a American Standard Beam is for example W 20 x 86, which is 20 inches deep with a weight of 86 lb/ft.

I-shaped cross-section beams:

  • Britain : Universal Beams (UB) and Universal Columns (UC)
  • Europe : IPE. HE. HL. HD and other sections
  • US : Wide Flange (WF) and H sections

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Related Topics

  • Beams and Columns - Deflection and stress, moment of inertia, section modulus and technical information of beams and columns
  • Mechanics - Kinematics, forces, vectors, motion, momentum, energy and the dynamics of objects

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