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

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## W21x44 Beam Size and Dimensions

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

Depth |
20.70 in |

Width |
6.50 in |

Area |
13.0 in^{2 } |

Weight |
44 lb/ft |

Web Thickness |
0.35 in |

Flange Thickness |
0.45 in |

Area Moment of Inertia |
826 in^{4} |

Elastic Section Modulus |
80 in^{3} |

## W21x44 Profile

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:

Depth |
525 mm |

Width |
165 mm |

Area |
8390 mm^{2} |

Weight |
66 kg/m |

Web Thickness |
8.9 mm |

Flange Thickness |
11.4 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:

The area moment of inertia of the W21x44 profile about the x-axis is approximately 826 in^{4}.

### W21x44 Section Modulus

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

The elastic section modulus for the W21x44 profile about the X-axis is approximately 80 in^{3}.

## W21x44 Properties

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