Dimensions and section properties for ST12X45
Structural sectional properties for a ST12X45 standard steel section
US Customary Units
| Description | Symbol | Value |
|---|---|---|
| Shape Category / Designation | Type | ST |
| Section Name | Name | ST12X45 |
| Cross Sectional Area | A | 13.2 in2 |
| Section Width | b | 7.13 in |
| Section Depth | d | 12 in |
| Flange thickness | tf | 0.87 in |
| Web thickness | tw | 0.625 in |
| Radius of Gyration about X-X | rx | 3.79 in |
| Radius of Gyrations about Y-Y | ry | 1.3 in |
| Moment of Inertia about X-X | Ix | 190 in4 |
| Moment of Intertia about Y-Y | Iy | 22.3 in4 |
| Elastic Section Modulus about X-X | Sx | 22.6 in3 |
| Elastic Section Modulus about Y-Y | Sy | 6.27 in3 |
| Plastic Section Modulus about X-X | Zx | 41.1 in3 |
| Plastic Section Modulus about Y-Y | Zy | 11.2 in3 |
| St. Venant Torsional Constant | J | 3.01 in4 |
| Warping Torsion Constant | Cw | 12.1 in6 |
| Self Weight of section | Weight | 45 lb/ft |
Metric Units
| Description | Symbol | Value |
|---|---|---|
| Shape Category / Designation | Type | ST |
| Section Name | Name | ST12X45 |
| Cross Sectional Area | A | 8516 mm2 |
| Section Width | b | 181 mm |
| Section Depth | d | 305 mm |
| Flange thickness | tf | 22.1 mm |
| Web thickness | tw | 15.9 mm |
| Radius of Gyration about X-X | rx | 96 mm |
| Radius of Gyrations about Y-Y | ry | 33 mm |
| Moment of Inertia about X-X | Ix | 79000000 mm4 |
| Moment of Intertia about Y-Y | Iy | 9000000 mm4 |
| Elastic Section Modulus about X-X | Sx | 370000 mm3 |
| Elastic Section Modulus about Y-Y | Sy | 103000 mm3 |
| Plastic Section Modulus about X-X | Zx | 674000 mm3 |
| Plastic Section Modulus about Y-Y | Zy | 184000 mm3 |
| St. Venant Torsional Constant | J | 1253000 mm4 |
| Warping Torsion Constant | Cw | 3000000000 mm6 |
| Self Weight of section | Weight | 67 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. The height and width of the section are 12 in (305 mm) and 7.13 in (181 mm) respectively. It weighs 45 lb/ft (67 kg/m) and has a cross sectional area of 13.2 in2 (8516 mm2).
The section has a tensile yield capacity of:
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The section has a flexural plastic moment capacity of:
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The section has a flexural elastic moment capacity of:
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