Rectangular and square HSS

HSS12X8X1/4 HSS304.8X203.2X6.4

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 = 8d = 12tdes = 0.233tdes = 0.233
Cross-section, to scaledimensions in inches

Dimensions

Depthd
12in
Widthb
8in
Nominal thicknesstnom
0.25in
Design thicknesstdes
0.233in

Mass and area

Mass per lengthm
32.63lb/ft
Cross-sectional areaA
8.96in²

Strong axis x–x

Moment of inertiaIx
184in⁴
Elastic section modulusSx
30.6in³
Plastic section modulusZx
36.6in³
Radius of gyrationrx
4.53in

Weak axis y–y

Moment of inertiaIy
98.8in⁴
Elastic section modulusSy
24.7in³
Plastic section modulusZy
27.8in³
Radius of gyrationry
3.32in

Torsion and stability

Torsional constantJ
202in⁴
Torsional modulusC
42.5in³

Slenderness ratios

Wall slendernessb/t
31.3
Wall slendernessh/t
48.5

Equivalents in other standards