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HSS6 Round Tube Sizes

The HSS6 Round series runs 7 sizes, from HSS6x.5 at 29.4 lb/ft to HSS6x.125 at 7.85 lb/ft. They share one outside diameter, so the sizes in it differ only in wall thickness and every one of them fits the same saddle.

HSS6 Round sizes, heaviest first

Size	lb/ft	OD (in)	t (in)	A (in²)	Ix (in⁴)	Sx (in³)	Zx (in³)
HSS6x.5	29.4	6	0.465	8.09	31.2	10.4	14.3
HSS6x.375	22.55	6	0.349	6.2	24.8	8.28	11.2
HSS6x.312	18.97	6	0.291	5.22	21.3	7.11	9.49
HSS6x.28	17.12	6	0.26	4.69	19.3	6.45	8.57
HSS6x.25	15.37	6	0.233	4.22	17.6	5.86	7.75
HSS6x.188	11.68	6	0.174	3.18	13.5	4.51	5.91
HSS6x.125	7.85	6	0.116	2.14	9.28	3.09	4.02

Relevant tools

Steel Shape Properties Table
search and compare across every series
Beam Shear, Moment and Deflection Diagram Calculator
check a span made up of one of these sizes
All Shape Series
every published series, W-shapes through round HSS

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