Rectangular and square HSS

HSS18X10X1/4 HSS457.2X254X6.4

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 = 10d = 18tdes = 0.233tdes = 0.233
Cross-section, to scaledimensions in inches

Dimensions

Depthd
18in
Widthb
10in
Nominal thicknesstnom
0.25in
Design thicknesstdes
0.233in

Mass and area

Mass per lengthm
46.24lb/ft
Cross-sectional areaA
12.7in²

Strong axis x–x

Moment of inertiaIx
566in⁴
Elastic section modulusSx
62.9in³
Plastic section modulusZx
76in³
Radius of gyrationrx
6.68in

Weak axis y–y

Moment of inertiaIy
230in⁴
Elastic section modulusSy
46.1in³
Plastic section modulusZy
50.9in³
Radius of gyrationry
4.26in

Torsion and stability

Torsional constantJ
515in⁴
Torsional modulusC
80.8in³

Slenderness ratios

Wall slendernessb/t
39.9
Wall slendernessh/t
74.3

Equivalents in other standards