HSS 18.000x0.625

Round HSS from AISC Shapes Database v16.0. Also designated HSS457.2X15.9.

18 in18 in

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

Dimensions

PropertyMetricImperial
Design wall thickness14.8 mm0.581 in
Nominal wall thickness15.9 mm0.625 in
Outside diameter457 mm18 in

Bending about the major axis

PropertyMetricImperial
Second moment of area, Iₓ504,000,000 mm⁴1,210 in⁴
Elastic modulus, Sₓ2,200,000 mm³134 in³
Plastic modulus, Zₓ2,880,000 mm³176 in³
Radius of gyration, rₓ156 mm6.16 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_y504,000,000 mm⁴1,210 in⁴
Elastic modulus, S_y2,200,000 mm³134 in³
Plastic modulus, Z_y2,880,000 mm³176 in³
Radius of gyration, r_y156 mm6.16 in

Torsion and warping

PropertyMetricImperial
Torsion constant, J1.01000e+9 mm⁴2,420 in⁴

Mass

PropertyMetricImperial
Mass per metre173 kg/m116.09 lb/ft
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