Rectangular and square HSS

HSS18X6X3/4 HSS457.2X152.4X19.0

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 = 0.698tdes = 0.698
Cross-section, to scaledimensions in inches

Dimensions

Depthd
18in
Widthb
6in
Nominal thicknesstnom
0.75in
Design thicknesstdes
0.698in

Mass and area

Mass per lengthm
109.9lb/ft
Cross-sectional areaA
30.3in²

Strong axis x–x

Moment of inertiaIx
1,060in⁴
Elastic section modulusSx
118in³
Plastic section modulusZx
158in³
Radius of gyrationrx
5.92in

Weak axis y–y

Moment of inertiaIy
179in⁴
Elastic section modulusSy
59.6in³
Plastic section modulusZy
70.4in³
Radius of gyrationry
2.43in

Torsion and stability

Torsional constantJ
530in⁴
Torsional modulusC
127in³

Slenderness ratios

Wall slendernessb/t
5.6
Wall slendernessh/t
22.8

Equivalents in other standards