M10×8 junior beam

Detailing dimensions and section properties from the AISC Shapes Database, 16th Edition. Values are shown to the nearest 1/16 in. as they appear on a shop drawing.

M10×8 measures 10 in. deep with a 2 3/4 in. flange, on a 1/8 in. web and 3/16 in. flanges.

At 8 lb per foot it is one of the 3 M10 sizes, which run from 7.5 to 9 lb/ft.

For strong-axis bending its section modulus is Sx = 6.95 in³ and its moment of inertia Ix = 34.6 in⁴, with a plastic modulus Zx = 8.2 in³.

Detailing dimensions

Depth (d)10"
Flange width (bf)2 3/4"
Web thickness (tw)1/8"
Flange thickness (tf)3/16"
k (detailing)9/16"

Section properties

Weight8 lb/ft
Area (A)2.37 in²
Ix34.6 in⁴
Sx6.95 in³
Zx8.2 in³
rx3.82 in
Iy0.593 in⁴
Sy0.441 in³
Zy0.711 in³
ry0.5 in
J0.0224 in⁴

Other M10 sizes

Same nominal size, different weight — useful when you are checking a substitution or a lighter section.

M10×7.5M10×9

Similar weight junior beams

Comparable 8 lb/ft sections in other junior beam sizes.

M8×6.56.5 lb/ft · Sx 4.63 in³M8×6.26.2 lb/ft · Sx 4.39 in³M4×66 lb/ft · Sx 2.48 in³M12×1010 lb/ft · Sx 10.3 in³M12×10.810.8 lb/ft · Sx 11.1 in³M6×4.44.4 lb/ft · Sx 2.41 in³M12.5×11.611.6 lb/ft · Sx 12.8 in³M12×11.811.8 lb/ft · Sx 12 in³

Detailing values are rounded to the nearest 1/16 in. per the AISC Steel Construction Manual. Verify critical dimensions against the current Manual before fabrication. Need M10×8 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: Junior beams · Steel Beam Size Chart

Interactive drawing