HSS 18x10x5/16

Rectangular HSS from AISC Shapes Database v16.0. Also designated HSS457.2X254X7.9.

10 in18 in

Outline drawn from the published dimensions. Fillets and root radii are not shown.

Dimensions

PropertyMetricImperial
Height457 mm18 in
Width254 mm10 in
Design wall thickness7.39 mm0.291 in
Nominal wall thickness7.95 mm0.3125 in

Bending about the major axis

PropertyMetricImperial
Second moment of area, Iₓ289,000,000 mm⁴695 in⁴
Elastic modulus, Sₓ1,270,000 mm³77.2 in³
Plastic modulus, Zₓ1,540,000 mm³93.7 in³
Radius of gyration, rₓ169 mm6.65 in
Distance to top fibre228.5 mm9 in
Distance to bottom fibre228.5 mm9 in

Bending about the minor axis

PropertyMetricImperial
Second moment of area, I_y117,000,000 mm⁴282 in⁴
Elastic modulus, S_y924,000 mm³56.4 in³
Plastic modulus, Z_y1,030,000 mm³62.7 in³
Radius of gyration, r_y107 mm4.23 in

Torsion and warping

PropertyMetricImperial
Torsion constant, J264,000,000 mm⁴635 in⁴

Mass

PropertyMetricImperial
Mass per metre85.4 kg/m57.36 lb/ft
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