HSS 18.000x1.000

Round HSS from AISC Shapes Database v16.0. Also designated HSS457.2X25.4.

18 in18 in

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

Dimensions

PropertyMetricImperial
Design wall thickness23.6 mm0.93 in
Nominal wall thickness25.4 mm1 in
Outside diameter457 mm18 in

Bending about the major axis

PropertyMetricImperial
Second moment of area, Iₓ758,000,000 mm⁴1,820 in⁴
Elastic modulus, Sₓ3,310,000 mm³202 in³
Plastic modulus, Zₓ4,440,000 mm³271 in³
Radius of gyration, rₓ153 mm6.04 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_y758,000,000 mm⁴1,820 in⁴
Elastic modulus, S_y3,310,000 mm³202 in³
Plastic modulus, Z_y4,440,000 mm³271 in³
Radius of gyration, r_y153 mm6.04 in

Torsion and warping

PropertyMetricImperial
Torsion constant, J1.52000e+9 mm⁴3,640 in⁴

Mass

PropertyMetricImperial
Mass per metre270 kg/m181.73 lb/ft
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