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 To confirm the status of any standard, identify the replacement standard if it is obsolete and/or purchase the standard please use.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

Unequal Angles ...BS 4-1:1971 (Superseded by BS 4: 1993)

Please don't use for new designs

Dimensions

M = Mass per m , A= Depth of Section, B= Width of Section,
T = Thickness, R1 = Root radius, R2 = Toe radius,  AREA = Area of Section

 
Serial Size Leg Lengths A x B T M R1 R2 AREA
mm mm mm kg mm mm cm2
229 x 102 228.6 x 101.6 22.1 53.77 13.0 4.8 68.49
   20.6 50.21 13.0 4.8 63.97
    18.9 46.45 13.0 4.8 59.17
    17.4 42.87 13.0 4.8 54.61
    15.8 39.20 13.0 4.8 49.93
    14.2 35.43 13.0 4.8 45.13
    12.6 31.56 13.0 4.8 40.20
203x152 203.2x152.4 22.1 58.09 13.7 4.8 74.00
    20.5 54.42 13.7 4.8 69.07
    18.9 50.32 13.7 4.8 64.10
    17.3 46.30 13.7 4.8 58.99
    15.8 42.32 13.7 4.8 53.91
    14.2 38.29 13.7 4.8 48.78
    12.6 34.10 13.7 4.8 43.44
203 x 102 203.2 x101.6 19.0 42.75 12.2 4.8 54.45
    17.3 39.32 12.2 4.8 50.09
    15.8 36.07 12.2 4.8 45.95
    14.2 32.62 12.2 4.8 41.55
    12.6 29.07 12.2 4.8 37.03
178 x89 177.8 x 88.9 15.8 31.30 11.2 4.8 39.87
    14.2 28.28 11.2 4.8 36.02
    12.6 25.31 11.2 4.8 32.24
    11.1 22.36 11.2 4.8 28.48
    9.4 19.22 11.2 4.8 24.48
152 x 102 152.4 x 101.6 19.0 36.16 10.7 4.8 44.80
    17.4 32.47 10.7 4.8 41.37
    15.8 29.66 10.7 4.8 37.78
    14.2 26.80 10.7 4.8 34.14
    12.6 23.99 10.7 4.8 30.56
    11.0 21.14 10.7 4.8 26.93
    9.5 18.30 10.7 4.8 23.31
Serial Size Leg Lengths A x B T M R1 R2 AREA
mm mm mm kg mm mm cm2
152 x 89 152.4 x 88.9 15.7 27.99 10.4 4.8 35.66
    14.2 25.46 10.4 4.8 32.43
    12.6 22.77 10.4 4.8 29.00
    11.1 20.12 10.4 4.8 25.63
    9.4 17.26 10.4 4.8 21.99
    7.8 14.44 10.4 4.8 18.40
152 x76 152.4 x 76.2 15.8 26.52 9.9 4.8 33.78
    14.2 23.99 9.9 4.8 30.56
    12.6 21.45 9.9 4.8 27.33
    11.0 18.92 9.9 4.8 24.10
    9.5 16.39 9.9 4.8 20.87
    7.8 13.69 9.9 4.8 17.44
127 x 89 127.0 x 88.9 15.8 24.86 9.7 4.8 31.67
    14.2 22.64 9.7 4.8 28.84
    12.6 20.26 9.7 4.8 25.81
    11.1 17.89 9.7 4.8 22.79
    9.4 15.35 9.7 4.8 19.56
    7.9 12.94 9.7 4.8 16.48
127 x 76 127.0 x 76.2 14.2 21.17 9.1 4.8 26.96
    12.6 18.91 9.1 4.8 24.09
    11.0 16.69 9.1 4.8 21.27
    9.4 14.44 9.1 4.8 18.39
    7.8 12.06 9.1 4.8 15.37
102 x 89 101.6 x 88.9 15.8 21.75 8.9 4.8 27.71
    14.2 19.67 8.9 4.8 25.06
    12.6 17.72 8.9 4.8 22.57
    11.0 15.62 8.9 4.8 19.90
    9.5 13.55 8.9 4.8 17.27
    7.8 11.31 8.9 4.8 14.41
Serial Size Leg Lengths A x B T M R1 R2 AREA
mm mm mm kg mm mm cm2
102 x 76 101.6 x 76.2 14.2 18.31 8.4 4.8 23,32
    12.6 16.38 8.4 4.8 20.87
    11.0 14.44 8.4 4.8 18.40
    9.4 12.50 8.4 4.8 15.92
    7.9 10.58 8.4 4.8 13.47
102 x 64 101.6 x 63.5 11.0 13.40 8.1 4.8 17.07
    9.5 11.61 8.1 4.8 14.79
    7.8 9.69 8.1 4.8 12.35
    6.3 7.89 8.1 4.8 10.05
89 x 76 88.9 x 76.2 14.2 16.83 8.1 4.8 21.44
    12.7 15.20 8.1 4.8 19.36
    11.0 13.40 8.1 4.8 17.07
    9.5 11.61 8.1 4.8 14.79
    7.8 9.69 8.1 4.8 12.35
    6.3 7.89 8.1 4.8 10.05
89 x 64 88.9 x 63.5 11.0 12.20 7.6 4.8 15.55
    9.4 10.57 7.6 4.8 13.47
    7.8 8.93 7.6 4.8 11.37
    6.2 7.16 7.6 4.8 9.12
76 x 64 76.2 x 63.5 11.0 11.17 7.4 4.8 14.23
    9.4 9.68 7.4 4.8 12.33
    7.9 8.19 7.4 4.8 10.43
    6.2 6.56 7.4 4.8 8.36
76 x 51 76.2 x 50.8 11.0 10.12 6.9 2.4 12.89
    9.4 8.78 6.9 2.4 11.18
    7.9 7.45 6.9 2.4 9.48
    6.2 5.96 6.9 2.4 7.59
    4.7 4.62 6.9 2.4 5.88
64 x 51 63. x 50.8 9.3 7.74 6.6 2.4 9.86
    7.8 6.55 6.6 2.4 8.35
    6.2 5.35 6.6 2.4 6.82
    4.6 4.01 6.6 2.4 5.11
64 x 38 63.5 x 38.1 7.8 5.80 6.1 2.4 7.39
    6.3 4.77 6.1 2.4 6.08
    4.6 3.58 6.1 2.4 4.56
51 x 38 50.8 x 38.1 7.9 5.06 5.8 2.4 6.45
    6.1 4.02 5.8 2.4 5.12
    4.7 3.13 5.8 2.4 3.99
Serial Size Leg Lengths A x B T M R1 R2 AREA
mm mm mm kg mm mm cm2


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