W12x19 Beam Specifications

W12x19 is a rolled structural beam with wide flanges that is used in construction and other applications.

W12x19 Beam Size and Dimensions

The dimensions and specifications of this structural steel beam are below:

Depth12.16 in
Width4.01 in
Area5.6 in2
Weight19 lb/ft
Web Thickness0.24 in
Flange Thickness0.35 in
Area Moment of Inertia127 in4
Elastic Section Modulus21 in3

W12x19 Profile

W12x19 beam specifications

The depth of W12x19 beams may vary by 1/8” above and below the nominal value.

The flange width may vary by 1/4” above nominal and 3/16” below nominal. Flanges may be out of square by as much as 5/16”.

The distance from the center of the web to the center of the profile may be no greater than 3/16”.

The radii of fillets and toes for W-beams are not specified. Instead, these dimensions are left up to individual manufacturers.

W12x19 Weight

Wide flange beams are designated by their depth x weight. The W12x19 designation indicates that the beam weighs 19 pounds per foot. A 10-foot section of W12x19 would weigh 190 pounds and a 50-foot section of W12x19 would weigh 950 pounds.

W12x19 Conversion to Metric

The metric equivalent to W12x19 is W310x28.3. This metric beam has the following specifications:

Depth309 mm
Width102 mm
Area3590 mm2
Weight28.3 kg/m
Web Thickness6 mm
Flange Thickness8.9 mm

W12x19 Section Properties

W12x19 Area Moment of Inertia

The area moment of inertia (or second moment area) for a W12x19 beam about the x-axis (perpendicular to the flange) can be calculated from the equation below:

W12x19 area moment of inertia

The area moment of inertia of the W12x19 profile about the x-axis is approximately 127 in4.

W12x19 Section Modulus

The elastic section modulus for a W12x19 beam about the X-axis is calculated from the following equation:

W12x19 Section Modulus

The elastic section modulus for the W12x19 profile about the X-axis is approximately 21 in3.

W12x19 Properties

The properties of W12x19 beams are specified by ASTM A6 “Standard Specifications for Rolled Structural Steel Bars, Plates, Shapes and Sheet Piling

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