HS168×6.4

Round HSS from CISC Structural Section Tables SST12.1.

168.3 mm168.3 mm

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

Dimensions

PropertyMetricImperial
Design wall thickness6.35 mm0.25 in
Nominal wall thickness6.35 mm0.25 in
Outside diameter168.3 mm6.626 in

Bending about the major axis

PropertyMetricImperial
Second moment of area, Iₓ10,600,000 mm⁴25.4666 in⁴
Elastic modulus, Sₓ126,000 mm³7.689 in³
Plastic modulus, Zₓ167,000 mm³10.191 in³
Radius of gyration, rₓ57.3 mm2.2559 in
Distance to top fibre84.15 mm3.313 in
Distance to bottom fibre84.15 mm3.313 in

Bending about the minor axis

PropertyMetricImperial
Second moment of area, I_y10,600,000 mm⁴25.4666 in⁴
Elastic modulus, S_y126,000 mm³7.689 in³
Plastic modulus, Z_y167,000 mm³10.191 in³
Radius of gyration, r_y57.3 mm2.2559 in

Torsion and warping

PropertyMetricImperial
Torsion constant, J21,200,000 mm⁴50.9332 in⁴

Mass

PropertyMetricImperial
Mass per metre25.4 kg/m17 lb/ft
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