Round HSS

HSS6.875X0.312 HSS174.6X7.9

Standard: AISC Shapes Database v16.0Source: AISC (aisc.org) — Shapes Database v16.0 (Excel file)
Values published by AISC, in US customary (original) and SI units.
xyD = 6.88tdes = 0.291tdes = 0.291
Cross-section, to scaledimensions in inches

Dimensions

Outside diameterD
6.88in
Nominal thicknesstnom
0.312in
Design thicknesstdes
0.291in

Mass and area

Mass per lengthm
21.89lb/ft
Cross-sectional areaA
6.02in²

Strong axis x–x

Moment of inertiaIx
32.7in⁴
Elastic section modulusSx
9.51in³
Plastic section modulusZx
12.6in³
Radius of gyrationrx
2.33in

Weak axis y–y

Moment of inertiaIy
32.7in⁴
Elastic section modulusSy
9.51in³
Plastic section modulusZy
12.6in³
Radius of gyrationry
2.33in

Torsion and stability

Torsional constantJ
65.4in⁴
Torsional modulusC
19in³

Slenderness ratios

Wall slendernessD/t
23.6

Equivalents in other standards