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Wide flange beam sizes and weights: W, S and HP shapes

Every American wide flange beam with its weight in pounds per foot and kilograms per metre, depth, flange width and web and flange thickness — 289 W shapes, plus the S, HP and M shapes. Type a size into the box to jump to it.

  • W6×15 — 15 lb/ft, 22.3 kg/m
  • W8×18 — 18 lb/ft, 26.8 kg/m
  • W8×31 — 31 lb/ft, 46.1 kg/m
  • W10×33 — 33 lb/ft, 49.1 kg/m
  • W12×26 — 26 lb/ft, 38.7 kg/m
  • W14×30 — 30 lb/ft, 44.6 kg/m
  • W16×40 — 40 lb/ft, 59.5 kg/m

W shapes — wide flange beams

Designationlb/ftkg/mDepth d, inFlange width bf, inWeb thickness tw, inFlange thickness tf, inMetric designation
W44×408408607.244.816.11.222.17W1100×607
W44×368368547.644.4161.11.97W1100×548
W44×335335498.54415.91.031.77W1100×499
W44×290290431.643.615.80.8651.58W1100×433
W44×262262389.943.315.80.7851.42W1100×390
W44×230230342.342.915.80.711.22W1100×343
W40×655655974.743.616.91.973.54W1000×976
W40×593593882.54316.71.793.23W1000×883
W40×503503748.542.116.41.542.76W1000×748
W40×431431641.441.316.21.342.36W1000×642
W40×397397590.84116.11.222.2W1000×591
W40×372372553.640.616.11.162.05W1000×554
W40×362362538.740.6161.122.01W1000×539
W40×324324482.240.215.911.81W1000×483
W40×297297442.039.815.80.931.65W1000×443
W40×277277412.239.715.80.831.58W1000×412
W40×249249370.639.415.80.751.42W1000×371
W40×215215320.03915.80.651.22W1000×321
W40×199199296.138.715.80.651.07W1000×296
W40×392392583.441.612.41.422.52W1000×584
W40×331331492.640.812.21.222.13W1000×494
W40×327327486.640.812.11.182.13W1000×486
W40×294294437.540.4121.061.93W1000×438
W40×278278413.740.2121.031.81W1000×415
W40×264264392.94011.90.961.73W1000×393
W40×235235349.739.711.90.831.58W1000×350
W40×211211314.039.411.80.751.42W1000×314
W40×183183272.33911.80.651.2W1000×272
W40×167167248.538.611.80.651.03W1000×249
W40×149149221.738.211.80.630.83W1000×222
W36×9259251376.643.118.63.024.53W920×1377
W36×8538531269.443.118.22.524.53W920×1269
W36×8028021193.542.6182.384.29W920×1194
W36×7237231075.941.817.82.173.9W920×1077
W36×652652970.341.117.61.973.54W920×970
W36×529529787.239.817.21.612.91W920×787
W36×487487724.739.317.11.52.68W920×725
W36×441441656.338.9171.362.44W920×656
W36×395395587.838.416.81.222.2W920×588
W36×361361537.23816.71.122.01W920×537
W36×330330491.137.716.61.021.85W920×491
W36×302302449.437.316.70.9451.68W920×449
W36×282282419.737.116.60.8851.57W920×420
W36×262262389.936.916.60.841.44W920×390
W36×247247367.636.716.50.81.35W920×368
W36×231231343.836.516.50.761.26W920×344
W36×387387575.939.112.71.422.56W920×576
W36×350350520.938.612.61.32.32W920×521
W36×318318473.238.212.41.182.13W920×474
W36×286286425.637.812.31.061.93W920×425
W36×256256381.037.412.20.961.73W920×381
W36×232232345.337.112.10.871.57W920×345
W36×210210312.536.712.20.831.36W920×313
W36×194194288.736.512.10.7651.26W920×289
W36×182182270.836.312.10.7251.18W920×271
W36×170170253.036.2120.681.1W920×253
W36×160160238.136120.651.02W920×238
W36×150150223.235.9120.6250.94W920×223
W36×135135200.935.6120.60.79W920×201
W33×387387575.93616.21.262.28W840×576
W33×354354526.835.616.11.162.09W840×527
W33×318318473.235.2161.041.89W840×473
W33×291291433.134.815.90.961.73W840×433
W33×263263391.434.515.80.871.57W840×392
W33×241241358.634.215.90.831.4W840×359
W33×221221328.933.915.80.7751.28W840×329
W33×201201299.133.715.70.7151.15W840×299
W33×169169251.533.811.50.671.22W840×251
W33×152152226.233.511.60.6351.06W840×226
W33×141141209.833.311.50.6050.96W840×210
W33×130130193.533.111.50.580.855W840×193
W33×118118175.632.911.50.550.74W840×176
W30×391391581.933.215.61.362.44W760×582
W30×357357531.332.815.51.242.24W760×531
W30×326326485.132.415.41.142.05W760×484
W30×292292434.53215.31.021.85W760×434
W30×261261388.431.615.20.931.65W760×389
W30×235235349.731.315.10.831.5W760×350
W30×211211314.030.915.10.7751.32W760×314
W30×191191284.230.7150.711.19W760×284
W30×173173257.530.4150.6551.07W760×257
W30×148148220.230.710.50.651.18W760×220
W30×132132196.430.310.50.6151W760×196
W30×124124184.530.210.50.5850.93W760×185
W30×116116172.63010.50.5650.85W760×173
W30×108108160.729.810.50.5450.76W760×161
W30×9999147.329.710.50.520.67W760×147
W30×9090133.929.510.40.470.61W760×134
W27×539539802.132.515.31.973.54W690×802
W27×368368547.630.414.71.382.48W690×548
W27×336336500.03014.61.262.28W690×500
W27×307307456.929.614.41.162.09W690×457
W27×281281418.229.314.41.061.93W690×419
W27×258258383.92914.30.981.77W690×384
W27×235235349.728.714.20.911.61W690×350
W27×217217322.928.414.10.831.5W690×323
W27×194194288.728.1140.751.34W690×289
W27×178178264.927.814.10.7251.19W690×265
W27×161161239.627.6140.661.08W690×240
W27×146146217.327.4140.6050.975W690×217
W27×129129192.027.6100.611.1W690×192
W27×114114169.727.310.10.570.93W690×170
W27×102102151.827.1100.5150.83W690×152
W27×9494139.926.9100.490.745W690×140
W27×8484125.026.7100.460.64W690×125
W24×370370550.62813.71.522.72W610×551
W24×335335498.527.513.51.382.48W610×498
W24×306306455.427.113.41.262.28W610×455
W24×279279415.226.713.31.162.09W610×415
W24×250250372.026.313.21.041.89W610×372
W24×229229340.82613.10.961.73W610×341
W24×207207308.025.7130.871.57W610×307
W24×192192285.725.5130.811.46W610×285
W24×176176261.925.212.90.751.34W610×262
W24×162162241.125130.7051.22W610×241
W24×146146217.324.712.90.651.09W610×217
W24×131131194.924.512.90.6050.96W610×195
W24×117117174.124.312.80.550.85W610×174
W24×104104154.824.112.80.50.75W610×155
W24×103103153.324.590.550.98W610×153
W24×9494139.924.39.070.5150.875W610×140
W24×8484125.024.19.020.470.77W610×125
W24×7676113.123.98.990.440.68W610×113
W24×6868101.223.78.970.4150.585W610×101
W24×626292.323.77.040.430.59W610×92
W24×555581.823.67.010.3950.505W610×82
W21×275275409.224.112.91.222.19W530×409
W21×248248369.123.712.81.11.99W530×369
W21×223223331.923.412.711.79W530×332
W21×201201299.12312.60.911.63W530×300
W21×182182270.822.712.50.831.48W530×272
W21×166166247.022.512.40.751.36W530×248
W21×147147218.822.112.50.721.15W530×219
W21×132132196.421.812.40.651.04W530×196
W21×122122181.621.712.40.60.96W530×182
W21×111111165.221.512.30.550.875W530×165
W21×101101150.321.412.30.50.8W530×150
W21×9393138.421.68.420.580.93W530×138
W21×8383123.521.48.360.5150.835W530×123
W21×7373108.621.28.30.4550.74W530×109
W21×6868101.221.18.270.430.685W530×101
W21×626292.3218.240.40.615W530×92
W21×555581.820.88.220.3750.522W530×82
W21×484871.420.68.140.350.43W530×72
W21×575784.821.16.560.4050.65W530×85
W21×505074.420.86.530.380.535W530×74
W21×444465.520.76.50.350.45W530×66
W18×311311462.822.3121.522.74W460×464
W18×283283421.221.911.91.42.5W460×421
W18×258258383.921.511.81.282.3W460×384
W18×234234348.221.111.71.162.11W460×349
W18×211211314.020.711.61.061.91W460×315
W18×192192285.720.411.50.961.75W460×286
W18×175175260.42011.40.891.59W460×260
W18×158158235.119.711.30.811.44W460×235
W18×143143212.819.511.20.731.32W460×213
W18×130130193.519.311.20.671.2W460×193
W18×119119177.11911.30.6551.06W460×177
W18×106106157.718.711.20.590.94W460×158
W18×9797144.418.611.10.5350.87W460×144
W18×8686128.018.411.10.480.77W460×128
W18×7676113.118.2110.4250.68W460×113
W18×7171105.718.57.640.4950.81W460×106
W18×656596.718.47.590.450.75W460×97
W18×606089.318.27.560.4150.695W460×89
W18×555581.818.17.530.390.63W460×82
W18×505074.4187.50.3550.57W460×74
W18×464668.518.16.060.360.605W460×68
W18×404059.517.96.020.3150.525W460×60
W18×353552.117.760.30.425W460×52
W16×100100148.81710.40.5850.985W410×149
W16×8989132.416.810.40.5250.875W410×132
W16×7777114.616.510.30.4550.76W410×114
W16×676799.716.310.20.3950.665W410×100
W16×575784.816.47.120.430.715W410×85
W16×505074.416.37.070.380.63W410×75
W16×454567.016.17.040.3450.565W410×67
W16×404059.51670.3050.505W410×60
W16×363653.615.96.990.2950.43W410×53
W16×313146.115.95.530.2750.44W410×46.1
W16×262638.715.75.50.250.345W410×38.8
W14×8738731299.223.618.83.945.51W360×1299
W14×8088081202.422.818.63.745.12W360×1202
W14×7307301086.422.417.93.074.91W360×1086
W14×665665989.621.617.72.834.52W360×990
W14×605605900.320.917.42.64.16W360×900
W14×550550818.520.217.22.383.82W360×818
W14×500500744.119.6172.193.5W360×744
W14×455455677.11916.82.023.21W360×677
W14×426426634.018.716.71.883.04W360×634
W14×398398592.318.316.61.772.85W360×592
W14×370370550.617.916.51.662.66W360×551
W14×342342509.017.516.41.542.47W360×509
W14×311311462.817.116.21.412.26W360×463
W14×283283421.216.716.11.292.07W360×421
W14×257257382.516.4161.181.89W360×382
W14×233233346.71615.91.071.72W360×347
W14×211211314.015.715.80.981.56W360×314
W14×193193287.215.515.70.891.44W360×287
W14×176176261.915.215.70.831.31W360×262
W14×159159236.61515.60.7451.19W360×237
W14×145145215.814.815.50.681.09W360×216
W14×132132196.414.714.70.6451.03W360×196
W14×120120178.614.514.70.590.94W360×179
W14×109109162.214.314.60.5250.86W360×162
W14×9999147.314.214.60.4850.78W360×147
W14×9090133.91414.50.440.71W360×134
W14×8282122.014.310.10.510.855W360×122
W14×7474110.114.210.10.450.785W360×110
W14×6868101.214100.4150.72W360×101
W14×616190.813.9100.3750.645W360×91
W14×535378.913.98.060.370.66W360×79
W14×484871.413.88.030.340.595W360×72
W14×434364.013.780.3050.53W360×64
W14×383856.614.16.770.310.515W360×57.8
W14×343450.6146.750.2850.455W360×51
W14×303044.613.86.730.270.385W360×44
W14×262638.713.95.030.2550.42W360×39
W14×222232.713.750.230.335W360×32.9
W12×336336500.016.813.41.782.96W310×500
W12×305305453.916.313.21.632.71W310×454
W12×279279415.215.913.11.532.47W310×415
W12×252252375.015.4131.42.25W310×375
W12×230230342.315.112.91.292.07W310×342
W12×210210312.514.712.81.181.9W310×313
W12×190190282.814.412.71.061.74W310×283
W12×170170253.01412.60.961.56W310×253
W12×152152226.213.712.50.871.4W310×226
W12×136136202.413.412.40.791.25W310×202
W12×120120178.613.112.30.711.11W310×179
W12×106106157.712.912.20.610.99W310×158
W12×9696142.912.712.20.550.9W310×143
W12×8787129.512.512.10.5150.81W310×129
W12×7979117.612.412.10.470.735W310×117
W12×7272107.112.3120.430.67W310×107
W12×656596.712.1120.390.605W310×97
W12×585886.312.2100.360.64W310×86
W12×535378.912.1100.3450.575W310×79
W12×505074.412.28.080.370.64W310×74
W12×454567.012.18.050.3350.575W310×67
W12×404059.511.98.010.2950.515W310×60
W12×353552.112.56.560.30.52W310×52
W12×303044.612.36.520.260.44W310×44.5
W12×262638.712.26.490.230.38W310×38.7
W12×222232.712.34.030.260.425W310×32.7
W12×191928.312.24.010.2350.35W310×28.3
W12×161623.8123.990.220.265W310×23.8
W12×141420.811.93.970.20.225W310×21
W10×112112166.711.410.40.7551.25W250×167
W10×100100148.811.110.30.681.12W250×149
W10×8888131.010.810.30.6050.99W250×131
W10×7777114.610.610.20.530.87W250×115
W10×6868101.210.410.10.470.77W250×101
W10×606089.310.210.10.420.68W250×89
W10×545480.410.1100.370.615W250×80
W10×494972.910100.340.56W250×73
W10×454567.010.18.020.350.62W250×67
W10×393958.09.927.990.3150.53W250×58
W10×333349.19.737.960.290.435W250×49.1
W10×303044.610.55.810.30.51W250×44.8
W10×262638.710.35.770.260.44W250×38.5
W10×222232.710.25.750.240.36W250×32.7
W10×191928.310.24.020.250.395W250×28.4
W10×171725.310.14.010.240.33W250×25.3
W10×151522.39.9940.230.27W250×22.3
W10×121217.99.873.960.190.21W250×17.9
W8×676799.798.280.570.935W200×100
W8×585886.38.758.220.510.81W200×86
W8×484871.48.58.110.40.685W200×71
W8×404059.58.258.070.360.56W200×59
W8×353552.18.128.020.310.495W200×52
W8×313146.1880.2850.435W200×46.1
W8×282841.78.066.540.2850.465W200×41.7
W8×242435.77.936.50.2450.4W200×35.9
W8×212131.38.285.270.250.4W200×31.3
W8×181826.88.145.250.230.33W200×26.6
W8×151522.38.114.020.2450.315W200×22.5
W8×131319.37.9940.230.255W200×19.3
W8×101014.97.893.940.170.205W200×15
W6×252537.26.386.080.320.455W150×37.1
W6×202029.86.26.020.260.365W150×29.8
W6×151522.35.995.990.230.26W150×22.5
W6×161623.86.284.030.260.405W150×24
W6×121217.96.0340.230.28W150×18
W6×9913.45.93.940.170.215W150×13.5
W6×8.58.512.65.833.940.170.195W150×13
W5×191928.35.155.030.270.43W130×28.1
W5×161623.85.0150.240.36W130×23.8
W4×131319.34.164.060.280.345W100×19.3

S shapes — American Standard beams

Designationlb/ftkg/mDepth d, inFlange width bf, inWeb thickness tw, inFlange thickness tf, inMetric designation
S24×121121180.124.58.050.81.09S610×180
S24×106106157.724.57.870.621.09S610×158
S24×100100148.8247.250.7450.87S610×149
S24×9090133.9247.130.6250.87S610×134
S24×8080119.12470.50.87S610×119
S20×9696142.920.37.20.80.92S510×143
S20×8686128.020.37.060.660.92S510×128
S20×7575111.6206.390.6350.795S510×112
S20×666698.2206.260.5050.795S510×98.2
S18×7070104.2186.250.7110.691S460×104
S18×54.754.781.41860.4610.691S460×81.4
S15×505074.4155.640.550.622S380×74
S15×42.942.963.8155.50.4110.622S380×64
S12×505074.4125.480.6870.659S310×74
S12×40.840.860.7125.250.4620.659S310×60.7
S12×353552.1125.080.4280.544S310×52
S12×31.831.847.31250.350.544S310×47.3
S10×353552.1104.940.5940.491S250×52
S10×25.425.437.8104.660.3110.491S250×37.8
S8×232334.284.170.4410.425S200×34
S8×18.418.427.4840.2710.425S200×27.4
S6×17.2517.2525.763.570.4650.359S150×25.7
S6×12.512.518.663.330.2320.359S150×18.6
S5×101014.9530.2140.326S130×15
S4×9.59.514.142.80.3260.293S100×14.1
S4×7.77.711.542.660.1930.293S100×11.5
S3×7.57.511.232.510.3490.26S75×11.2
S3×5.75.78.4832.330.170.26S75×8.5
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HP shapes — bearing piles

Designationlb/ftkg/mDepth d, inFlange width bf, inWeb thickness tw, inFlange thickness tf, inMetric designation
HP18×204204303.618.318.11.131.13HP460×304
HP18×181181269.4181811HP460×269
HP18×157157233.617.717.90.870.87HP460×234
HP18×135135200.917.517.80.750.75HP460×202
HP16×183183272.316.516.31.131.13HP410×272
HP16×162162241.116.316.111HP410×242
HP16×141141209.816160.8750.875HP410×211
HP16×121121180.115.815.90.750.75HP410×181
HP16×101101150.315.515.80.6250.625HP410×151
HP16×8888131.015.315.70.540.54HP410×131
HP14×117117174.114.214.90.8050.805HP360×174
HP14×102102151.81414.80.7050.705HP360×152
HP14×8989132.413.814.70.6150.615HP360×132
HP14×7373108.613.614.60.5050.505HP360×108
HP12×8989132.412.412.30.720.72HP310×132
HP12×8484125.012.312.30.6850.685HP310×125
HP12×7474110.112.112.20.6050.61HP310×110
HP12×636393.811.912.10.5150.515HP310×93
HP12×535378.911.8120.4350.435HP310×79
HP10×575784.89.9910.20.5650.565HP250×85
HP10×424262.59.710.10.4150.42HP250×62
HP8×363653.68.028.160.4450.445HP200×53

M shapes

Designationlb/ftkg/mDepth d, inFlange width bf, inWeb thickness tw, inFlange thickness tf, inMetric designation
M12.5×12.412.418.512.53.750.1550.228M318×18.5
M12.5×11.611.617.312.53.50.1550.211M318×17.3
M12×11.811.817.6123.070.1770.225M310×17.6
M12×10.810.816.1123.070.160.21M310×16.1
M12×101014.9123.250.1490.18M310×14.9
M10×9913.4102.690.1570.206M250×13.4
M10×8811.99.952.690.1410.182M250×11.9
M10×7.57.511.29.992.690.130.173M250×11.2
M8×6.56.59.6782.280.1350.189M200×9.7
M8×6.26.29.2382.280.1290.177M200×9.2
M6×4.44.46.5561.840.1140.171M150×6.6
M6×3.73.75.515.9220.0980.129M150×5.5
M5×18.918.928.1550.3160.416M130×28.1
M4×668.933.83.80.130.16M100×8.9
M4×4.084.086.0742.250.1150.17M100×6.1
M3×2.92.94.3232.250.090.13M100×4.3

How to read the designation

W8×31 is a wide flange shape, nominally 8 in deep, weighing 31 lb per foot. The weight is the real nominal figure; the depth is only a family name. Within one nominal depth the rolls are spread apart to make the heavier sections, so the clear distance between the flanges stays the same and the overall depth grows: a W8×31 is 8 in deep and a W8×67 is 9 in. For fit-up take the depth and flange width from the table, never from the name.

The last column gives the metric designation of the same shape, as used in Canada and on metric drawings: W200×46.1 is the W8×31 — nominal depth in millimetres and mass in kilograms per metre.

Pounds per foot and kilograms per metre

The kg/m column is the lb/ft figure multiplied by 1.488. In a few light shapes it differs slightly from the number in the metric designation, which is rounded on its own schedule; for a weight take-off use the lb/ft figure or the kg/m column, not the name.

The weight of a member is its length times the figure in the table: 24 ft of W10×33 is 24 × 33 = 792 lb. For a whole list of members with a cutting allowance and a price, use the bill of materials.

Other names, other series

These are the shapes of ASTM A6 and the AISC manual. In Mexico the same sections are sold as IPR (the W shape) and IPS (the S shape), with the weight given in kilograms per metre. European IPE, HEA and HEB sections are a different series with different dimensions — a W shape cannot be swapped for the HE section of the same depth without a check. Their weights are in the steel section weight table for IPE, HEA, HEB and UPN.

Channels and angles are in the C channel and angle weight chart, hollow sections in the HSS weight chart.

Source

Designations, weights and dimensions follow the AISC Shapes Database v16.0 (2023), which matches the 16th edition of the Steel Construction Manual. The table is a reference for estimating and fabrication; structural design values come from the manual itself and from the engineer of record.

Frequently asked questions

How much does a W8x31 beam weigh per foot?

31 lb per foot — the weight is the second number in the designation. That is 46.1 kg/m. A 20 ft length weighs 620 lb.

What does W8x31 mean?

W is the shape — a wide flange beam. 8 is the nominal depth in inches and 31 is the weight in pounds per foot. The actual depth of a W8×31 is 8.00 in, but within one nominal depth it changes with the weight: a W8×67 is 9.00 in deep.

What is the difference between a W beam and an S beam?

A W shape has wide flanges with parallel inner and outer faces. An S shape, the American Standard beam, has narrower flanges whose inner faces slope. At the same depth and a similar weight the W shape is stiffer and easier to connect to, which is why nearly all new structural steel uses it.

Is a W beam the same as an I-beam or an H-beam?

In shop talk people say “I-beam” for almost any of them. Strictly, “I-beam” is the older S shape with sloped flanges, and “H-beam” is sometimes said of the heavy, nearly square W shapes; an HP is called an H-pile. On a drawing or an order only the designation counts: W12×26, S8×18.4, HP12×53.

How do I convert lb/ft to kg/m?

Multiply by 1.488. A W12×26 at 26 lb/ft is 38.7 kg/m; a W16×40 at 40 lb/ft is 59.5 kg/m. The metric designation of the same shape, such as W310×38.7, already carries the kilograms per metre.

What is an HP shape?

A bearing pile: a wide flange section whose web and flanges have the same thickness and whose depth and flange width are nearly equal. It is rolled to be driven into the ground, and it is also used as a heavy column.

Author: , welder and metal fabricator Updated:

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