Rectangular and square HSS

HSS18X6X1/4 HSS457.2X152.4X6.4

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.
xyb = 6d = 18tdes = 0.233tdes = 0.233
Cross-section, to scaledimensions in inches

Dimensions

Depthd
18in
Widthb
6in
Nominal thicknesstnom
0.25in
Design thicknesstdes
0.233in

Mass and area

Mass per lengthm
39.43lb/ft
Cross-sectional areaA
10.8in²

Strong axis x–x

Moment of inertiaIx
419in⁴
Elastic section modulusSx
46.5in³
Plastic section modulusZx
59.4in³
Radius of gyrationrx
6.22in

Weak axis y–y

Moment of inertiaIy
75.1in⁴
Elastic section modulusSy
25in³
Plastic section modulusZy
27.3in³
Radius of gyrationry
2.63in

Torsion and stability

Torsional constantJ
210in⁴
Torsional modulusC
47.7in³

Slenderness ratios

Wall slendernessb/t
22.8
Wall slendernessh/t
74.3

Equivalents in other standards