Applicable to Shapes: Shape Dimensions
Nomenclature & Permissible Variations
HP,M&W
Units
S
y
m
b
o
l
Common
Name
E
n
g
l
i
s
h
M
e
t
r
i
c Permissible Variations
A Cross-sectional Area in2 mm2Õ Calculated from SDI shape – information only
b f Flange Width in mm As per latest edition of ASTM A6/A6M
d Flang
e Depth in mm As per latest edition o
f ASTM A6/A6M
k ‘k’ – line in mm Detailing dimension – information only
k1“k1” – line in mm Detailing dimension – information only
L Length ft,
in
m
ÕLength cutting tolerance as per current SDI price page R Fillet Radius in mm Mill practice – information only
T ‘Clear” Web in mm Detailing dimension – information only
t f Flange Thickness in mm As per latest edition of ASTM A6/A6M
t w Web Thickness in mm As per latest edition of ASTM A6/A6M
w Weight / Mass lbs/ft kg/m As per latest edition of ASTM A6/A6M
ÕDenotes deviation from ASTM A6/A6M
The permissible dimensional variations of structural long products manufactured by Steel Dynamics Inc,
Structural and Rail Division, conform to the latest edition of ASTM A6/A6M. Cross-sectional areas in the
following tables are calculated from nominal dimensions, and include the nominal fillet radius employed by Steel Dynamics Inc.  Consequently, the tabulated values may slightly deviate from those published in ASTM A6/A6M.
Nominal detailing dimensions are provided as a courtesy.  Permissible dimensional variations, and rolling
factors (such as roll wear), may result in supplied shapes differing from the tabulated values.  Consequently, allowances should be made for proper fitting and connections.
Piece length tolerance deviates from ASTM A6/A6M.  Please consult the current price page for mill practice.
*Please note that Steel Dynamics, Inc. reserves the right to produce material in either the Heavy Section Mill (HSM) or the Medium Section Mill (MSM).
Wide Flange
Beams
Inch-Pound Sections
Inch - Pound Sizes
Comparable Metric Sizes  Inch - Pound Sizes
Comparable Metric Sizes Prime Section
Group
Weight range in Group
Prime Section Group Weight range in
Group
Prime Section
Group
Weight range in Group
Prime Section Group Weight range in
Group (in x in) (lbs/ft) (mm x mm)
(kg/m)
(in x in) (lbs/ft)
(mm x mm)
(kg/m)
4 x 4
13 100 x 100
19.3  14 x 6.75 30 - 38 360 x 170 44.6 - 58
14 x 5 22 - 26
360 x 130
32.9 - 39
5 x 5 1
6 - 19 130 x 130
23.8 - 28.1
16 x 10.2567 - 100 410 x 260 100 - 149 6 x 6 15 - 25 150 x 150 22.5 - 37.1  16 x  7 36 - 57 410 x 180 53 - 85 6 x 4  8.5 - 16 150 x 100
13 - 24
16 x  5.5 26 - 31
410 x 140
38.8 - 46.1
8 x 8 31 - 67 200 x 200 46.1 - 100  18 x 11 76 - 211 460 x 280 113 - 315 8 x 6.5 24 - 28 200 x 170 35.9 - 41.7  18 x  7.5 41 - 71 460 x 190 60 - 106 8 x 5.25 14 - 21 200 x 130 21.0 - 31.3  18 x  6 35 - 46
460 x 150
52 - 68
8 x 4 10 - 15 200 x 100
15.0 - 22.5
21 x 12.25101 - 201 530 x 310 150 - 300 10 x 10 49 - 112 250 x 250 73.0 - 167  21 x  8.25 48 - 93 530 x 210 72 - 138 10 x 8 33 - 45 250 x 200 49.1 - 67.0  21 x  6.5 44 - 57
530 x 170
66 - 85
10 x 5.75 16 - 30 250 x 150 24.0 - 44.8
10 x 4 12 - 19 250 x 100
17.9 - 28.4
24 x 12.75104 - 192 610 x 320 155 - 285
24 x  9 56 - 103 610 x 230 83 - 153 12 x 12 65 - 210 310 x 310 97.0 - 313  24 x  7 55 - 62
610 x 180
82 - 92
12 x 10 53 - 58 310 x 250 79 - 86
12 x 8 40 - 50 310 x 200 60 - 74  27 x 10 84 - 129
690 x 250
125 - 192
12 x 6.5 21 - 35 310 x 170 31 - 52
12 x 4 14 - 22 310 x 100
21.0 - 32.7
30 x 10.5 90 - 132
760 x 270
134 - 196
14 x 14.5 90 - 132 360 x 370 134 - 196  33 x 11.5 118 - 169
840 x 290
176 - 251
14 x 10 61 - 82 360 x 250 91.0 - 122
14 x 8
43 - 53
360 x 200
64 - 79
36 x 12
135 - 256
920 x 300
201 - 381
W 4
Comparable Metric Shapes
Nominal Shape Dimensions
W 690’s
Flange
W E I G H T
A r e a
D e p t h
W i d t h
T h i c k n e s s
W e b  T h i c k n e s s
Detailing Distance Fillet Radius
S E C T I O N  N A M E
C o m p a r a b l e  M e t r i c  S e c t i o n
w
A
d
b f
t f
t w
k k 1 T R P r i m e  S e c t i o n  G r o u p
in x lbs/ft mm x kg/m
lbs/ft
in
2
in in
in
in
in
in
in
in
in
4x4 W4x13 W690x192 13 3.83 4.16 4.060 0.345 0.280 0.680 1.490 2.670 .400
3/8
W 5
Comparable Metric Shapes
Nominal Shape
Dimensions
W 760’s
Flange
W E I G H T
A r e a
D e p t h
W i d t h
T h i c k n e s s
W e b  T h i c k n e s s
Detailing Distance Fillet Radius
S E C T I O N  N A M E
C o m p a r a b l e  M e t r i c  S e c t i o n
w
A
d
b f
t f
t w
k k 1 T R P r i m e  S e c t i o n  G r o u p
in x lbs/ft mm x kg/m
lbs/ft
in
2
in
in
in
in
in in in
in
5x5 W5x19 W130x28.1 19 5.54 5.15 5.030 0.430 0.270 0.670 1.660 3.490 .400
3/8  W5x16 W130x19.3
16 4.68 5.01 5.000 0.360 0.240 0.640 1.520 3.490 .400
3/8
Comparable Metric Shapes
Nominal Shape Dimensions
W150s
Flange
Web Detailing Distance*
Fillet Radius* *These values depend on the mill.
Manual measurements are necessary to confirm.
W E I G H T
A r e a
D e p t h
W i d t h
T h i c k n e s s
T h i c k n e s s
MSM
HSM
MSM
HSM
S E C T I O N  N A M E
C o m p a r a b l e  M e t r i c  S e c t i o n
w    A    d b f  t f  t w  k k 1  T k k 1 T R R P r i m e  S e c t i o n  G r o u p
in x lbs/ft mm x kg/m
lbs/ft
in 2
in
in
in
in
in
in
in
in
in
in
in
in
W6x25 W150x37.1 25 7.50 6.38 6.080 0.455 0.320 0.860 0.565 4.660 0.855 0.560 4.670 0.405 0.400 W6x20 W150x29.8 20 6.03 6.20 6.020 0.365 0.260 0.770 0.535 4.660 0.765 0.530 4.670 0.405 0.400 6x6
W6x15 W150x22.5
15 4.59 5.99 5.990 0.260 0.230 0.665 0.520 4.660 0.660 0.515 4.670 0.405 0.400
W6x16 W150x24 16 4.90 6.28 4.030 0.405 0.260 0.810 0.535 4.660 0.805 0.530 4.670 0.405 0.400 W
6x12 W150x18 12 3.71 6.03 4.000 0.280 0.230 0.685 0.520 4.660 0.680 0.515 4.670 0.405 0.400 W6x9 W150x13.5 9 2.84 5.90 3.940 0.215 0.170 0.620 0.490 4.660 0.615 0.485 4.670 0.405 0.400 6x4
W6x8.5 W150x13
8.5 2.67 5.83 3.940 0.194 0.170 0.599 0.490 4.632 0.594 0.485 4.642 0.405
0.400
Comparable Metric Shapes
Nominal Shape Dimensions
W200s
Flange
Web Detailing Distance*
Fillet Radius* *These values depend on the mill.
Manual measurements are necessary to confirm.
W E I G H T
A r e a
D e p t h
W i d t h
T h i c k n e s s
T h i c k n e s s
MSM
HSM
MSM
HSM
S E C T I O N  N A M E
C o m p a r a b l e  M e t r i c  S e c t i o n
w    A    d b f  t f  t w  k k 1  T k k 1 T R R P r i m e  S e c t i o n  G r o u p
in x lbs/ft
mm x kg/m
lbs/ft
in 2
in
in
in
in
in
in
in
in
in
in
in
in
8x8 W8x67 W200x100 67 20.10 9.00 8.280 0.935 0.570 1.407 0.757 6.186 1.335 0.685 6.330 0.472 0.400  W8x58 W200x86 58 17.50 8.75 8.220 0.810 0.510 1.282 0.727 6.186 1.210 0.655 6.330 0.472 0.400  W8x48 W200x71 48 14.51 8.50 8.110 0.685 0.400 1.157 0.672 6.186 1.085 0.600 6.330 0.472 0.400  W8x40 W200x59 40 12.16 8.25 8.070 0.560 0.360 1.032 0.652 6.186 0.960 0.580 6.330 0.472 0.400  W8x35 W200x52 35 10.70 8.12 8.020 0.495 0.310 0.967 0.627 6.186 0.895 0.555 6.330 0.472 0.400  W8x31 W200x46.1
31 9.54 8.00 7.995 0.435 0.285 0.907 0.615 6.186 0.835 0.543 6.330 0.472 0.400
8x6½ W8x28 W200x41.7 28 8.66 8.06 6.535 0.465 0.285 0.937 0.615 6.186 0.865 0.543 6.330 0.472 0.400  W8x24 W200x35.9
24 7.49 7.93    6.495 0.400 0.245 0.872 0.595 6.186 0.800 0.523 6.330 0.472 0.400
8x5¼ W8x21 W200x31.3 21    6.64 8.28 5.270 0.400 0.250 0.805 0.530 6.670 0.800 0.525 6.680 0.405 0.400  W8x18 W200x26.6
18    5.74 8.14    5.250 0.330 0.230 0.735 0.520 6.670 0.730 0.515 6.680 0.405 0.400
8x4 W8x15 W200x22.5 15 4.67 8.11 4.015 0.315 0.245 0.720 0.528 6.670 0.615 0.423 6.880 0.405 0.300  W8x13 W200x19.3 13    4.07 7.99    4.000 0.255 0.230 0.660 0.520 6.670 0.555 0.415 6.880 0.405 0.300
W8x10
W200x15
10
3.20
7.89
3.940
0.205
0.170 0.610 0.490 6.670 0.505 0.385 6.880 0.405
0.300