W 8X21 - Section Properties

The W 8X21 is a steel section with a mass of 31.3 kg/m, an overall depth of 210.3 mm and width of 133.9 mm. It has a cross-sectional area of 39.7 cm², a second moment of area Iᵧ of 3134 cm⁴, a plastic modulus Wₚₗ,ᵧ of 334.3 cm³, to AISC Shapes Database v16.0 (SCI P363 Blue Book).

Mass: 21 lb/ft (31.3 kg/m)
Depth: 8.28 in (210.3 mm)
Width: 5.27 in (133.9 mm)
Area: 6.16 in² (39.7 cm²)

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mass (lb/ft)21 (31.3 kg/m)

h (in)8.28 (210.3 mm)

b (in)5.27 (133.9 mm)

t_w (in)0.25 (6.4 mm)

t_f (in)0.4 (10.2 mm)

A (in²)6.16 (39.7 cm²)

I_y (in⁴)75.3 (3134 cm⁴)

W_el,y (in³)18.2 (298.24 cm³)

W_pl,y (in³)20.4 (334.3 cm³)

i_y (in)3.49 (8.86 cm)

I_z (in⁴)9.77 (406.7 cm⁴)