The W6x20 is a wide-flange structural steel shape listed in the W-shape reference data below. This page brings together its dimensional and weight information for engineers, detailers, fabricators, and CAD users reviewing a steel member.
Use the listed values as a section-reference starting point, then confirm material specifications, connection requirements, loading, and applicable design checks before using the shape in a project. For related terminology, see the guide to W-shapes and the reference for steel section properties.
W Beam
refer to : AISC 16
the American Institute of Steel Construction (AISC) Specification for Structural Steel Buildings (AISC 360-16), which is the 2016 edition of the AISC Specification for Structural Steel Buildings. It provides guidelines and requirements for the design, fabrication, and erection of steel structures in the United States.
Depth : 157.5 mm
Width : 152.9 mm
Web Thickness : 6.6 mm
Flange Thickness : 9.3 mm
Root Fillet Radius : 6.3 mm
Sectional Area : 37.87 cm2
Unit Weight : 29.7 kg/m
How to read the W6x20 designation
The designation identifies a W-shape by its nominal depth designation and its nominal weight designation. The actual dimensions shown in the source data are metric and should be used when accurate drafting, detailing, quantity takeoff, or section comparison is required.
What the listed dimensions describe
Depth and width describe the overall envelope of the rolled section. Web thickness describes the central web, while flange thickness describes the flange material. The root fillet radius represents the curved transition between the web and flange; this region matters when checking clearances, coping, detailing, and contact with connected parts.
Using area and unit weight
The listed sectional area is a geometric property used in section comparisons and in engineering calculations where area is required. The unit weight supports estimating member self-weight and preparing material takeoffs. These values do not, by themselves, establish member capacity, stability, connection strength, or project compliance.
CAD and drafting reference
The downloadable DWG file can support preliminary layout and drafting workflows. Before issuing drawings or fabricating steel, verify the downloaded geometry against the authoritative section data and coordinate the shape with connection details, tolerances, and the project design basis. Related resources may include the steel connections reference and structural steel detailing guidance.
W6x20 frequently asked questions
What type of section is W6x20?
W6x20 is a W-shape, also commonly called a wide-flange structural steel section.
Which standard is referenced for this section data?
The source content refers to AISC 16 and identifies the American Institute of Steel Construction Specification for Structural Steel Buildings as AISC 360-16.
Are the published dimensions nominal or actual?
The designation is nominal, while the listed depth, width, thicknesses, and root fillet radius provide the dimensional reference for the section.
What is the W6x20 sectional area?
The source lists a sectional area of 37.87 cm2.
What is the W6x20 unit weight?
The source lists a unit weight of 29.7 kg/m.
Can the DWG file be used directly for fabrication?
The DWG is a drafting reference. It should be checked against the project requirements and authoritative section data before fabrication or final drawing issue.
