Rectangular and square HSS

HSS16X12X3/8 HSS406.4X304.8X9.5

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 = 12d = 16tdes = 0.349tdes = 0.349
Cross-section, to scaledimensions in inches

Dimensions

Depthd
16in
Widthb
12in
Nominal thicknesstnom
0.375in
Design thicknesstdes
0.349in

Mass and area

Mass per lengthm
68.31lb/ft
Cross-sectional areaA
18.7in²

Strong axis x–x

Moment of inertiaIx
702in⁴
Elastic section modulusSx
87.7in³
Plastic section modulusZx
104in³
Radius of gyrationrx
6.12in

Weak axis y–y

Moment of inertiaIy
452in⁴
Elastic section modulusSy
75.3in³
Plastic section modulusZy
85.5in³
Radius of gyrationry
4.91in

Torsion and stability

Torsional constantJ
862in⁴
Torsional modulusC
127in³

Slenderness ratios

Wall slendernessb/t
31.4
Wall slendernessh/t
42.8

Equivalents in other standards