Dimensions and section properties for ST12X45

Structural sectional properties for a ST12X45 standard steel section

steel section diagram

US Customary Units

DescriptionSymbolValue
Shape Category / DesignationTypeST
Section NameNameST12X45
Cross Sectional AreaA13.2 in2
Section Widthb7.13 in
Section Depthd12 in
Flange thicknesstf0.87 in
Web thicknesstw0.625 in
Radius of Gyration about X-Xrx3.79 in
Radius of Gyrations about Y-Yry1.3 in
Moment of Inertia about X-XIx190 in4
Moment of Intertia about Y-YIy22.3 in4
Elastic Section Modulus about X-XSx22.6 in3
Elastic Section Modulus about Y-YSy6.27 in3
Plastic Section Modulus about X-XZx41.1 in3
Plastic Section Modulus about Y-YZy11.2 in3
St. Venant Torsional ConstantJ3.01 in4
Warping Torsion ConstantCw12.1 in6
Self Weight of sectionWeight45 lb/ft

Metric Units

DescriptionSymbolValue
Shape Category / DesignationTypeST
Section NameNameST12X45
Cross Sectional AreaA8516 mm2
Section Widthb181 mm
Section Depthd305 mm
Flange thicknesstf22.1 mm
Web thicknesstw15.9 mm
Radius of Gyration about X-Xrx96 mm
Radius of Gyrations about Y-Yry33 mm
Moment of Inertia about X-XIx79000000 mm4
Moment of Intertia about Y-YIy9000000 mm4
Elastic Section Modulus about X-XSx370000 mm3
Elastic Section Modulus about Y-YSy103000 mm3
Plastic Section Modulus about X-XZx674000 mm3
Plastic Section Modulus about Y-YZy184000 mm3
St. Venant Torsional ConstantJ1253000 mm4
Warping Torsion ConstantCw3000000000 mm6
Self Weight of sectionWeight67 kg/m

Note: Metric units have been converted from tabulated imperial values and rounded to a reasonable number of significant figures.

A ST12X45 steel section is a standard North American steel section in the ST - Standard Tee Sections category. It weighs 45 lb/ft and has a cross sectional area of 13.2 in2. The height and width of the section are 12 in and 7.13 in respectively.

The section has a tensile yield capacity of:

kip

The section has a flexural plastic moment capacity of:

kip-ft

The section has a flexural elastic moment capacity of:

kip-ft