HSS2.5x.188 – HSS Shapes - Round

HSS2.5x.188 is a 2.5 in (64 mm) diameter round hollow section with a 0.188 in (5 mm) nominal wall, weighing 4.65 lb/ft (6.9 kg/m).

Round HSS are closed, circular tube sections, sharing the torsional and biaxial strength advantages of rectangular HSS but in a circular profile that's often preferred where appearance matters — exposed columns, canopy supports, and architectural framing — as well as more utilitarian uses like handrail posts and bollards. The circular shape distributes compressive and torsional loads evenly in every direction, making round HSS a strong, materially efficient choice wherever a round column or post is wanted rather than a square or rectangular one.

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Dimensions

PropertyValue
Nominal Weight (lb/ft)4.65
Outside Diameter (in)2.5
Nominal Thickness (in)0.188

Full sortable table: Dimensions table for this family

Section Properties

PropertyValue
Ix (in⁴)0.865
Zx (in³)0.943
Sx (in³)0.692
rx (in)0.825
Iy (in⁴)0.865
Zy (in³)0.943
Sy (in³)0.692
ry (in)0.825
J (in⁴)1.73
C (in³)1.38

Full sortable table: Section properties table for this family