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HSS Round Shape Tables

The follow details are used for HSS round shapes in standard database tables.

Note: The required first two columns for all standard databases are RecNo and Name.

HSS round Shape

Table 1. HSS round shape default properties
Name Description Unit Column No.
OD Outer diameter in 3
T Thickness in 4
AX Cross sectional area in^2 5
I Moment of inertia in^4 6
Z Plastic modulus in^3 7
C Torsional constant in^3 8

Calculated Properties

The following section properties are calculated as indicated when they are not present for the profile.

Property
Formula
AX
= π 4 OD 2 OD 2 T 2
AY
= F × AX
where
F
=
0.5 < 0.49 + 0.8 T OD < 0.89
AZ
= F × AX
IX
= π 32 OD 4 OD 2 T 4
IY
= π 64 OD 4 OD 2 T 4
IZ
= π 64 OD 4 OD 2 T 4
SY
= 2 × IY OD
SZ
= 2 × IZ OD
PY
= 0.4244 × AX ( OD 2 ) 3 ( OD 2 T ) 3 ( OD 2 ) 2 ( OD 2 T ) 2
PZ
= 0.4244 × AX ( OD 2 ) 3 ( OD 2 T ) 3 ( OD 2 ) 2 ( OD 2 T ) 2

Spreadsheet Data Examples

Table 2. HSS Round Section - English units
Name OD T A I Z C
(in) (in) (in^2) (in^4) (in^3) (in^3)
HSS20X.500 20 0.465 28.5 1360 177 272
Table 3. HSS Round Section - Metric units
Name OD T A I Z
(mm) (mm) (cm^2) (cm^4) (cm^3)
PIP213L 21.3 2 1.21 0.571 0.748