W21x44 Beam Specifications

W21x44 is a rolled structural beam with wide flanges that is used in construction and other applications.

W21x44 Beam Size and Dimensions

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

Depth20.70 in
Width6.50 in
Area13.0 in2
Weight44 lb/ft
Web Thickness0.35 in
Flange Thickness0.45 in
Area Moment of Inertia826 in4
Elastic Section Modulus80 in3

W21x44 Profile

W21x44 beam specifications

The depth of W21x44 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. The 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.

W21x44 Weight

Wide flange beams are designated by their depth x weight. The W21x44 designation indicates that the beam weighs 44 pounds per foot. A 10-foot section of W21x44 would weigh 440 pounds and a 50-foot section of W21x44 would weigh 2,200 pounds.

W21x44 Conversion to Metric

The metric equivalent to W21x44 is W530x66. This metric beam has the following specifications:

Depth525 mm
Width165 mm
Area8390 mm2
Weight66 kg/m
Web Thickness8.9 mm
Flange Thickness11.4 mm

W21x44 Section Properties

W21x44 Area Moment of Inertia

The area moment of inertia (or second moment area) for a W21x44 beam about the x-axis (perpendicular to the flange) can be calculated from the equation below:

W21x44 area moment of inertia

The area moment of inertia of the W21x44 profile about the x-axis is approximately 826 in4.

W21x44 Section Modulus

The elastic section modulus for a W21x44 beam about the X-axis is calculated from the following equation:

W21x44 Section Modulus

The elastic section modulus for the W21x44 profile about the X-axis is approximately 80 in3.

W21x44 Properties

The properties of W21x44 channel are specified by ASTM A6 “Standard Specifications for Rolled Structural Steel Bars, Plates, Shapes and Sheet Piling

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