Section properties for ST12X40

Structural sectional properties for a ST12X40 standard steel section

steel section diagram
Shape Category / DesignationTypeST
Section NameNameST12X40
Cross Sectional AreaA11.7 in2
Section Widthb7 in
Section Depthd12 in
Flange thicknesstf0.87 in
Web thicknesstw0.5 in
Radius of Gyration about X-Xrx3.72 in
Radius of Gyrations about Y-Yry1.34 in
Moment of Inertia about X-XIx162 in4
Moment of Intertia about Y-YIy21 in4
Elastic Section Modulus about X-XSx18.6 in3
Elastic Section Modulus about Y-YSy6 in3
Plastic Section Modulus about X-XZx33.6 in3
Plastic Section Modulus about Y-YZy10.4 in3
St. Venant Torsional ConstantJ2.44 in4
Warping Torsion ConstantCw6.94 in6
Self Weight of section per footWeight40 lb/ft

A ST12X40 steel section is a standard North American steel section in the ST - Standard Tee Sections category. It weighs 40 lb/ft and has a cross sectional area of 11.7 in2. The height and width of the section are 12 in and 7 in respectively.

The section has a tensile yield capacity of:


The section has a flexural plastic moment capacity of:


The section has a flexural elastic moment capacity of: