These Pages include various standards. To confirm the status of any standard, identify the replacement standard if it is obsolete and/or purchase the standard please use. It is also possible to become a BSI member and obtain copies of the Standards at much reduced prices.

Steel Section Index

Equal Angles...BS 4-1:1971 (Superseded by BS 4: 1993)

Please don't use for new designs

Properties

C= Centre of Gravity , I= Moment Of Inertia, R= Radius Of Gyration, Z= Section Modulus (Elastic Modulus) = I/ymax,

Serial Size Thick C I R Z
Cx Cy Axis x-x Axis y-y Axis u-u Axis v-v Axis x-x Axis y-y Axiz u-u Axis v-v Axis x-x Axis y-y
  mm cm cm cm4 cm4 cm4 cm4 cm cm cm cm cm3 cm3
203 x 203 25.3 5.99 5.99 3686 3686 5845 1527 6.17 6.17 7.77 3.97 257 257
  23.7 5.93 5.93 3491 3491 5540 1442 6.19 6.19 7.80 3.98 243 243
  22.1 5.87 5.87 3294 3294 5232 1357 6.21 6.21 7.83 3.99 228 228
  20.5 5.81 5.81 3094 3094 4916 1271 6.23 6.23 7.85 3.99 213 213
  18.9 5.75 5.75 2885 2885 4587 1183 6.25 6.25 7.88 4.00 198 198
  17.3 5.69 5.69 2671 2671 4248 1093 6.27 6.27 7.91 4.01 183 183
  15.8 5.63 5.63 2455 2455 3907 1004 6.29 6.29 7.94 4.02 167 167
152 x 152 22.1 4.6 4.6 1321 1321 2089 553 4.58 4.58 5.77 2.97 124 124
  20.5 4.54 4.54 1243 1243 1968 517 4.60 4.60 5.79 2.97 116 116
  19.0 4.49 4.49 1164 1164 1846 482 4.62 4.62 5.82 2.98 108 108
  17.3 4.42 4.42 1080 1080 1714 446 4.64 4.64 5.85 2.98 99.8 99.8
  15.8 4.37 4.37 999 999 1587 411 4.66 4.66 5.88 2.99 91.9 91.9
  14.2 4.31 4.31 911 911 1448 374 4.68 4.68 5.90 3.0 83.3 83.3
  12.6 4.24 4.24 819 819 1303 335 4.70 4.70 5.93 3.01 74.5 74.5
  11.0 4.18 4.18 727 727 1156 297 4.72 4.72 5.96 3.02 65.7 65.7
  9.4 4.11 4.11 631 631 1003 258 4.74 4.74 5.98 3.03 56.7 56.7
127 x 127 19.0 3.85 3.85 651 651 1028 273 3.81 3.81 4.79 2.47 73.5 73.5
  17.4 3.79 3.79 607 607 961 253 3.83 3.83 4.82 2.47 68.1 68.1
  15.8 3.73 3.73 560 560 888 232 3.85 3.85 4.85 2.48 62.4 62.4
  14.2 3.67 3.67 511 511 811 211 3.87 3.87 4.87 2.48 56.6 56.6
  12.6 3.61 3.61 462 462 734 190 3.89 3.89 4.90 2.49 50.8 50.8
  11.0 3.55 3.55 411 411 654 169 3.91 3.91 4.93 2.50 44.9 44.9
  9.5 3.49 3.49 359 359 571 147 3.93 3.93 4.95 2.51 39.0 39.0
102 x 102 19.0 3.22 3.22 317 317 497 136 3.00 3.00 3.76 1.97 45.6 45.6
  17.4 3.16 3.16 296 296 466 126 3.02 3.02 3.79 1.97 42.3 42.3
  15.8 3.10 3.10 275 275 434 116 3.04 3.04 3.82 1.97 38.9 38.9
  14.2 3.04 3.04 252 252 399 105 3.06 3.06 3.84 1.97 35.4 35.4
  12.6 2.98 2.98 228 228 361 94.3 3.07 3.07 3.87 1.98 31.7 31.7
  11.0 2.92 2.92 203 203 323 83.8 3.09 3.09 3.90 1.99 28.1 28.1
  9.4 2.86 2.86 178 178 283 73.1 3.11 3.11 3.92 1.99 24.4 24.4
  7.8 2.79 2.79 150 150 239 61.7 3.13 3.13 3.95 2.00 20.4 20.4
89 x 89 15.8 2.78 2.78 178 178 280 75.7 2.63 2.63 3.30 1.72 29.1 29.1
  14.2 2.72 2.72 164 164 259 69.1 2.65 2.65 3.33 1.72 26.6 26.6
  12.6 2.66 2.66 149 149 235 62.0 2.67 2.67 3.36 1.72 23.9 23.9
  11.0 2.60 2.60 133 133 211 55.0 2.69 2.69 3.38 1.73 21.1 21.1
  9.4 2.54 2.54 116 116 185 47.9 2.70 2.70 3.41 1.74 18.3 18.3
  7.9 2.48 2.48 99.8 99.8 159 41.0 2.72 2.72 3.43 1.74 15..6 15..6
  6.3 2.41 2.41 81.0 81.0 129 33.3 2.74 2.74 3.45 1.75 12.5 12.5
76 x 76 14.3 2.41 2.41 99.6 99.6 157 42.7 2.25 2.25 2.82 1.47 19.1 19.1
  12.6 2.35 2.35 90.4 90.4 143 38.2 2.26 2.26 2.84 1.47 17.1 17.1
  11.0 2.29 2.29 80.9 80.9 128 33.8 2.28 2.28 2.87 1.47 15.2 15.2
  9.4 2.23 2.23 71.1 71.1 113 29.5 2.30 2.30 2.89 1.48 13.2 13.2
  7.8 2.16 2.16 60.9 60.9 96.8 25.1 2.31 2.31 2.92 1.49 11.2 11.2
  6.2 2.1 2.1 49.6 49.6 78.8 20.3 2.33 2.33 2.94 1.49 8.97 8.97
64 x 64 12.5 2.03 2.03 50.4 50.4 78.9 21.8 1.87 1.87 2.34 1.23 11.7 11.7
  11.0 1.98 1.98 45.8 45.8 72.1 19.5 1.89 1.89 2.37 1.23 10.5 10.5
  9.4 1.92 1.92 40.5 40.5 64.0 17.0 1.90 1.90 2.39 1.23 9.15 9.15
  7.9 1.86 1.86 35.0 35.0 55.5 14.6 1.92 1.92 2.42 1.24 7.80 7.80
  6.2 1.80 1.80 28.6 28.6 45.4 11.8 1.94 1.94 2.45 1.25 6.28 6.28
57 x 57 9.3 1.76 1.76 28.6 28.6 45.0 12.1 1.70 1.70 2.14 1.11 7.22 7.22
  7.8 1.70 1.70 24.7 24.7 39.1 10.3 1.72 1.72 2.16 1.11 6.15 6.15
  6.2 1.64 1.64 20.6 20.6 32.6 8.53 1.74 1.74 2.19 1.12 5.05 5.05
  4.6 1.57 1.57 15.8 15.8 25.0 6.51 1.76 1.76 2.21 1.13 3.80 3.80
51 x 51 9.4 1.60 1.60 19.6 19.6 30.8 8.42 1.50 1.50 1.88 0.98 5.64 5.64
  7.8 1.54 1.54 17.0 17.0 26.8 7.17 1.52 1.52 1.91 0.98 4.81 4.81
  6.3 1.49 1.49 14.3 14.3 22.7 5.95 1.53 1.53 1.93 0.99 3.98 3.98
  4.6 1.42 1.42 11.0 11.0 17.4 4.54 1.55 1.55 1.95 1.00 3.00 3.00
45 x 45 7.9 1.39 1.39 11.1 11.1 17.5 4.75 1.31 1.31 1.65 0.86 3.64 3.64
  6.1 1.32 1.32 9.09 9.09 14.4 3.80 1.33 1.33 1.68 0.86 2.91 2.91
  4.7 1.26 1.26 7.24 7.24 11.5 3.00 1.35 1.35 1.70 0.87 2.28 2.28
38 x 38 7.8 1.23 1.23 6.69 6.69 10.5 2.92 1.11 1.11 1.39 0.73 2.59 2.59
  6.3 1.17 1.17 5.67 5.67 8.94 2.41 1.13 1.13 1.42 0.73 2.15 2.15
  4.7 1.11 1.11 4.47 4.47 7.08 1.86 1.14 1.14 1.44 0.74 1.66 1.66
32 x 32 6.2 1.01 1.01 3.10 3.10 4.87 1.34 0.93 0.93 1.16 0.61 1.43 1.43
  4.6 0.95 0.95 2.45 2.45 3.87 1.03 0.94 0.94 1.19 0.61 1.10 1.10
  3.1 0.88 0.88 1.74 1.74 2.75 0.72 0.96 0.96 1.20 0.62 0.76 0.76
25 x 25 6.4 0.85 0.85 1.50 1.50 2.33 0.68 0.73 0.73 0.90 0.49 0.89 0.89
  4.7 0.79 0.79 1.20 1.20 1.89 0.51 0.74 0.74 0.93 0.48 0.69 0.69
  3.1 0.73 0.73 0.86 0.86 1.37 0.36 0.75 0.75 0.95 0.49 0.48 0.48
Serial Size Thick C I R Z
Cx Cy Axis x-x Axis y-y Axis u-u Axis v-v Axis x-x Axis y-y Axiz u-u Axis v-v Axis x-x Axis y-y
  mm cm cm cm4 cm4 cm4 cm4 cm cm cm cm cm3 cm3


Steel Section Index


Remember - the information on this site is for general information purposes only and while we endeavour to keep the information up to date and correct, we make no representations or warranties of any kind, express or implied, about its completeness, accuracy, reliability, suitability or availability. Any reliance you place on such information is therefore strictly at your own risk.

Roy Beardmore passed away on 9th March 2013. He is sadly missed. This website, Roymech, has been an invaluable resource for engineers around the world and we hope to maintain this incredible legacy going forward.

Have a question? Contact us.

© 2020 Roymech.org