Steel Beam Sizes & Section Properties

Search, filter and compare standard steel sections from US AISC, Canadian CISC, British, European and Australian libraries. View dimensions and section properties, download size charts, or analyze any section in the Kannamwar Engineering Calculator.

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Steel Section Finder

Search or browse standard steel sections.

Showing US AISC · W-Shapes · Imperial

AISC Shapes Database v16.0 · 2,299 sections

Searches every available library and shape family. Leave the field empty to browse the filters below.

Found 289 AISC W-shapes. Select a row to preview or check sections to compare.

Showing 1-75 of 289.

AISC W-shape dimensions and section properties in imperial units
CompareDesignationWeight (lb/ft)Depth, d (in)Flange width, bf (in)tw (in)tf (in)Area (in²)Ix (in⁴)Sx (in³)Zx (in³)Row action
W44x40840844.816.11.222.1712038,7001,7302,000Open calculator
W44x36836844.4161.11.9710834,7001,5601,800
W44x3353354415.91.031.7798.531,1001,4101,620
W44x29029043.615.80.8651.5885.427,0001,2401,410
W40x65565543.616.91.973.5419356,5002,5903,080
W44x26226243.315.80.7851.4277.224,1001,1101,270
W36x85385343.118.22.524.5325170,0003,2503,920
W36x92592543.118.63.024.5327273,0003,3904,130
W40x5935934316.71.793.2317450,4002,3402,760
W44x23023042.915.80.711.2267.820,8009711,100
W36x80280242.6182.384.2923664,8003,0403,660
W40x50350342.116.41.542.7614841,6001,9802,320
W36x72372341.817.82.173.921357,3002,7403,270
W40x39239241.612.41.422.5211629,9001,4401,710
W40x43143141.316.21.342.3612734,8001,6901,960
W36x65265241.117.61.973.5419250,6002,4602,910
W40x3973974116.11.222.211732,0001,5601,800
W40x32732740.812.11.182.1395.924,5001,2001,410
W40x33133140.812.21.222.1397.724,7001,2101,430
W40x36236240.6161.122.0110628,9001,4201,640
W40x37237240.616.11.162.0511029,6001,4601,680
W40x29429440.4121.061.9386.221,9001,0801,270
W40x27827840.2121.031.8182.320,5001,0201,190
W40x32432440.215.911.8195.325,6001,2801,460
W40x2642644011.90.961.7377.419,4009711,130
W40x29729739.815.80.931.6587.323,2001,1701,330
W36x52952939.817.21.612.9115639,6001,9902,330
W40x23523539.711.90.831.5869.117,4008751,010
W40x27727739.715.80.831.5881.521,9001,1001,250
W40x21121139.411.80.751.4262.115,500786906
W40x24924939.415.80.751.4273.519,6009931,120
W36x48748739.317.11.52.6814336,0001,8302,130
W36x38738739.112.71.422.5611426,5001,3601,610
W40x1831833911.80.651.253.313,200675774
W40x2152153915.80.651.2263.516,700859964
W36x44144138.9171.362.4413032,1001,6501,910
W40x19919938.715.80.651.0758.814,900770869
W40x16716738.611.80.651.0349.311,600600693
W36x35035038.612.61.32.3210323,6001,2201,440
W36x39539538.416.81.222.211628,5001,4901,710
W40x14914938.211.80.630.8343.89,800513598
W36x31831838.212.41.182.1393.421,2001,1101,300
W36x3613613816.71.122.0110625,7001,3501,550
W36x28628637.812.31.061.9383.918,9001,0001,160
W36x33033037.716.61.021.8596.923,3001,2401,410
W36x25625637.412.20.961.7375.316,8008951,040
W36x30230237.316.70.9451.688921,1001,1301,280
W36x23223237.112.10.871.576815,000809936
W36x28228237.116.60.8851.5782.919,6001,0501,190
W36x26226236.916.60.841.4477.217,9009721,100
W36x21021036.712.20.831.3661.913,200719833
W36x24724736.716.50.81.3572.516,7009131,030
W36x19419436.512.10.7651.265712,100664767
W36x23123136.516.50.761.2668.215,600854963
W36x18218236.312.10.7251.1853.611,300623718
W36x17017036.2120.681.15010,500581668
W36x16016036120.651.02479,760542624
W33x3873873616.21.262.2811424,3001,3501,560
W36x15015035.9120.6250.9444.39,040504581
W36x13513535.6120.60.7939.97,800439509
W33x35435435.616.11.162.0910422,0001,2401,420
W33x31831835.2161.041.8993.719,5001,1101,270
W33x29129134.815.90.961.7385.617,7001,0201,160
W33x26326334.515.80.871.5777.415,9009191,040
W33x24124134.215.90.831.471.114,200831940
W33x22122133.915.80.7751.2865.312,900759857
W33x16916933.811.50.671.2249.59,290549629
W33x20120133.715.70.7151.1559.111,600686773
W33x15215233.511.60.6351.0644.98,160487559
W33x14114133.311.50.6050.9641.57,450448514
W30x39139133.215.61.362.4411520,7001,2501,450
W33x13013033.111.50.580.85538.36,710406467
W33x11811832.911.50.550.7434.75,900359415
W30x35735732.815.51.242.2410518,7001,1401,320
W27x53953932.515.31.973.5415925,6001,5701,890
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Steel Beam Size Charts by Region and Standard

Browse all 6,691 integrated steel sections by country, regional standard and section family. Every family link opens its complete size chart with searchable dimensions, weights and section properties.

How to Use the Steel Section Finder

  1. Search or browse

    Enter a complete designation such as W12×26, W310×39 or IPE 300, or select a regional library, shape family and depth series.

  2. Filter by dimensions and properties

    Use advanced filters to narrow sections by maximum depth, maximum weight, minimum Ix and minimum Sx.

  3. Preview and compare

    Select a row to see its labelled cross-section. Check multiple sections to compare their dimensions and properties side by side.

  4. Open it in the Beam Calculator

    Choose “Analyze in Beam Calculator” to open a new beam model with the selected section properties already loaded for slope, deflection and stress analysis.

Understanding Steel Beam Designations

Steel section labels encode family, size and weight differently by region. Use the examples below to read common US, Canadian, British and European designations.

What does W12×26 mean?

W12×26 is an American wide-flange steel section. “W” identifies the shape family, “12” is the approximate nominal depth in inches, and “26” is the nominal weight in pounds per foot. The actual depth can differ from the nominal designation, so the tabulated dimensions should be used for analysis and detailing.

What does W310×39 mean?

In the Canadian metric designation W310×39, “310” represents the approximate nominal depth in millimetres and “39” represents the nominal mass in kilograms per metre.

What does UB 406×178×67 mean?

A British universal beam such as UB 406×178×67 is read as approximate depth × flange width × mass per metre: about 406 mm deep, 178 mm flange width, and 67 kg/m.

What does IPE 300 mean?

IPE 300 belongs to the European IPE family. “300” is the nominal section depth in millimetres. Actual depth, flange width and thickness vary by product and should be taken from the selected steel library.

Steel Beam Dimensions and Section Properties Explained

These symbols appear in the steel section finder and PDF charts. Use the table below to understand what each property represents and why it matters in beam and column design.

SymbolPropertyWhat it representsCommon unitsWhy it matters
dOverall depthDistance between the outer flange facesin, mmInfluences stiffness, clearance and bending behaviour
bfFlange widthOverall width of the flangein, mmAffects lateral stability and y-axis behaviour
twWeb thicknessThickness of the vertical webin, mmImportant for shear resistance
tfFlange thicknessThickness of the flangein, mmImportant for flexural resistance and local slenderness
ACross-sectional areaTotal steel areain2, mm2Used for weight, axial stress and average shear stress
IxMoment of inertia about the x-axisDistribution of area about the x-axisin4, mm4Controls flexural stiffness and deflection about the x-axis
IyMoment of inertia about the y-axisDistribution of area about the y-axisin4, mm4Controls stiffness about the y-axis
SxElastic section modulusIx divided by the extreme-fibre distancein3, mm3Used for elastic bending stress
SyElastic section modulus about the y-axisElastic modulus about the y-axisin3, mm3Used for bending stress about the y-axis
ZxPlastic section modulusPlastic bending property about the x-axisin3, mm3Used in plastic flexural resistance calculations
ZyPlastic section modulus about the y-axisPlastic property about the y-axisin3, mm3Used in plastic resistance about the y-axis
rxRadius of gyration about the x-axis√(Ix/A)in, mmUsed in member slenderness calculations
ryRadius of gyration about the y-axis√(Iy/A)in, mmOften important for column and lateral stability
JTorsional constantSaint-Venant torsional propertyin4, mm4Used in torsional and stability calculations
CwWarping constantResistance associated with nonuniform warpingin6, mm6Used in lateral-torsional buckling analysis

Types of Structural Steel Sections

Steel libraries use different designations for similar families. Use the crosswalk below to open the matching catalog for each region.

Pipe

Round sections designated according to nominal pipe sizing conventions.

How to Compare and Select a Steel Beam Size

A section with a larger moment of inertia is generally stiffer about the corresponding axis, but that does not automatically make it suitable for a particular beam. The required section depends on the span, support conditions, applied loads, material grade, unbraced length, deflection criteria and applicable design standard.

Practical selection workflow

  1. Establish span and support conditions.

  2. Define dead, live and other applicable loads.

  3. Select the appropriate material and regional standard.

  4. Identify candidate sections based on depth, weight and stiffness.

  5. Analyze reactions, shear, moment, slope and deflection.

  6. Complete the applicable strength, stability and serviceability checks.

  7. Compare passing alternatives for weight and constructability.

Analysis workflows

Use Steel Sections in Beam and 2D Structural Analysis

For a line beam, select a section and choose “Analyze in Beam Calculator” to open a model with its properties already loaded. For portal frames, trusses, braced frames and other connected systems, open the 2D Structural Analysis app and assign standard or custom sections to each member.

Need to combine catalogue shapes with plates, openings or imported CAD geometry? Use the free Section Builder for custom, arbitrary and built-up cross-sections.

  • Simply supported, cantilever, fixed and continuous beams
  • Point loads, distributed loads and applied moments
  • Multiple sections along a beam
  • Slope and deflection diagrams
  • Bending and shear stress results
  • PDF calculation reports
  • Saved models
  • AI-assisted beam model generation
Calculation ReportPDF
Beam calculation PDF report page showing the beam model, loads, supports, section properties, and reactions
Beam calculation PDF report page showing shear, moment, slope, and deflection diagrams

PDF downloads

Download section sheets and size charts for calculation packages

Get printable Kannamwar Engineering PDFs instantly from the finder—no email wait. Use a section sheet for one designation, or a size chart for the family or group you are browsing.

  • Section sheet with dimensional schematic
  • Geometry and section properties tables
  • Family or group size charts from the toolbar
  • Imperial or metric units from your current view
Get a section sheet

Select a section above, then use Download PDF on the selected card.

Kannamwar EngineeringPDF

W12x26

AISC · Wide flange · Imperial

Not to scale

Geometry

PropValPropVal
Wt26d12.2

Section properties

PropValPropVal
Ix204Iy29.1

Methodology

Data sources

Kannamwar Engineering preserves the underlying published source values and uses normalized values for unit conversion and calculations. Values displayed in the table may be rounded for readability. Confirm critical dimensions and properties against the official publisher’s tables before fabrication or final design.

AISC Shapes Database v16.0

Active library
Source / publisher
AISC (American Institute of Steel Construction)
Edition / version
Shapes Database v16.0
Sections
2,299
Last verified
July 2026

CISC Structural Section Tables SST12.1

Source / publisher
CISC (Canadian Institute of Steel Construction)
Edition / version
Structural Section Tables v12.1
Sections
1,514
Last verified
July 2026

Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1

Source / publisher
CEN / European steel sections
Edition / version
European Steel Sections v2026.1
Sections
1,239
Last verified
July 2026

British-Sections-1 and Eurocode 3 UK shared angle/hollow tables

Source / publisher
UK / British steel sections
Edition / version
Steel Sections v2023.11
Sections
1,196
Last verified
July 2026

Australian-Sections.xlsx (Sheets 1-19)

Source / publisher
Australian steel sections
Edition / version
Australian Steel Sections v2019.11
Sections
443
Last verified
July 2026

Last verified: July 2026

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Questions & answers

Frequently Asked Questions

What do the numbers in a steel beam designation mean?

The numbers encode size differently by library. In AISC W12×26, 12 is the approximate nominal depth in inches and 26 is the weight in pounds per foot. In Canadian W310×39, 310 is the approximate depth in millimetres and 39 is the mass in kilograms per metre. British UB designations use depth × flange width × mass, while IPE 300 uses a nominal depth in millimetres. Always use the tabulated dimensions for detailing and analysis.

What is the difference between an I-beam and a W-beam?

“I-beam” is an informal name for I-shaped sections. A W-beam is an AISC wide-flange shape—the common rolled I-section with parallel flanges. American standard S shapes are also I-shaped but use different flange geometry. Other libraries use designations such as UB, UC or IPE for similar families.

What is the difference between nominal depth and actual depth?

Nominal depth is the rounded depth used in the designation, such as the “12” in W12×26. Actual depth is the published overall depth from the steel table and can differ from the nominal value. Use the tabulated depth for clearance, connections and analysis.

What is the difference between Ix, Sx and Zx?

Ix is the moment of inertia about the x-axis and governs stiffness and deflection. Sx is the elastic section modulus about the x-axis and is used in elastic bending stress checks. Zx is the plastic section modulus about the x-axis and is used for plastic bending strength of suitable ductile sections. None of these alone is a complete code design check.

How do I compare two steel beam sizes?

Select multiple sections with the compare checkboxes to review depth, weight, Ix, Sx and related properties side by side. For project suitability, send candidates to the Kannamwar Engineering calculator and compare them under the same span, supports and loads.

Can I switch between imperial and metric units?

Yes. Use the Metric / Imperial toggle in the steel section finder. Display values are normalized for the selected unit system while the original source data remains stored in the database.

Which steel section libraries are included?

The finder includes 6,691 sections from AISC Shapes Database v16.0, Canadian CISC Structural Section Tables SST12.1, and the integrated European, British and Australian libraries across rolled, welded, angle, tee, channel, pipe and hollow-section families.

Can I download the steel beam size chart?

Yes. Use Export Excel or Export PDF in the finder toolbar. Both exports include the sections that match your current family, unit system and active filters. For a single designation, select the section and use Download PDF on the selected card.

Can I analyze a selected section in the beam calculator?

Yes. Choose Analyze on a selected section to open the Kannamwar Engineering calculator with that section’s geometric and section properties loaded into a new beam model. Then define the span, supports and loads to calculate reactions, shear, moment, slope, deflection and stress.

Does a higher Ix mean a beam can carry more load?

No. A higher Ix means the section is generally stiffer about that axis, which often reduces deflection, but it does not by itself determine load capacity. Capacity depends on span, support conditions, loads, material grade, unbraced length, deflection limits and the applicable design standard.

Does this tool determine the correct beam size for my project?

No. This page helps you browse, compare and analyze steel sections. Selecting the correct beam for a project requires engineering judgment and the applicable strength, stability and serviceability checks for your design standard.

Are the section dimensions suitable for fabrication or final design?

Use these values as a convenient reference from published steel shape libraries. Before fabrication or final design, confirm critical dimensions and properties against the publisher’s official tables for the edition you are using.

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