AISC L-Shapes: Dimensions and Section Properties
Browse AISC equal- and unequal-leg angles. Compare leg sizes, thickness and section properties in imperial or metric units.
Steel Section Finder
Search or browse standard steel sections.
Showing AISC · Angles · 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.
Filter by series
Showing the most relevant 75 sections.
| Designation | Weight (lb/ft) | Depth, d (in) | Width (in) | Area (in²) | Ix (in⁴) | Sx (in³) |
|---|---|---|---|---|---|---|
| L12x12x1 | 77.8 | 12 | 12 | 23 | 315 | 36.5 |
| L12x12x1-1/8 | 87.2 | 12 | 12 | 25.8 | 350 | 40.7 |
| L12x12x1-1/4 | 96.4 | 12 | 12 | 28.4 | 381 | 44.6 |
| L12x12x1-3/8 | 105 | 12 | 12 | 31.1 | 413 | 48.6 |
| L10x10x3/4 | 49.1 | 10 | 10 | 14.5 | 139 | 19.2 |
| L10x10x7/8 | 56.9 | 10 | 10 | 16.8 | 158 | 21.9 |
| L10x10x1 | 64.7 | 10 | 10 | 19 | 177 | 24.8 |
| L10x10x1-1/8 | 72.3 | 10 | 10 | 21.3 | 196 | 27.6 |
| L10x10x1-1/4 | 79.9 | 10 | 10 | 23.4 | 213 | 30.2 |
| L10x10x1-3/8 | 87.1 | 10 | 10 | 25.6 | 231 | 33 |
| L8x8x1/2 | 26.4 | 8 | 8 | 7.84 | 48.8 | 8.36 |
| L8x8x9/16 | 29.6 | 8 | 8 | 8.77 | 54.2 | 9.33 |
| L8x8x5/8 | 32.7 | 8 | 8 | 9.69 | 59.6 | 10.3 |
| L8x8x3/4 | 38.9 | 8 | 8 | 11.5 | 69.9 | 12.2 |
| L8x8x7/8 | 45 | 8 | 8 | 13.3 | 79.7 | 14 |
| L8x8x1 | 51 | 8 | 8 | 15.1 | 89.1 | 15.8 |
| L8x8x1-1/8 | 56.9 | 8 | 8 | 16.8 | 98.1 | 17.5 |
| L6x6x5/16 | 12.4 | 6 | 6 | 3.67 | 13 | 2.95 |
| L6x6x3/8 | 14.9 | 6 | 6 | 4.38 | 15.4 | 3.51 |
| L6x6x7/16 | 17.2 | 6 | 6 | 5.08 | 17.6 | 4.06 |
| L6x6x1/2 | 19.6 | 6 | 6 | 5.77 | 19.9 | 4.59 |
| L8x6x7/16 | 20.2 | 6 | 8 | 5.99 | 39.3 | 7.06 |
| L6x6x9/16 | 21.9 | 6 | 6 | 6.45 | 22 | 5.12 |
| L8x6x1/2 | 23 | 6 | 8 | 6.8 | 44.4 | 8.01 |
| L6x6x5/8 | 24.2 | 6 | 6 | 7.13 | 24.1 | 5.64 |
| L8x6x9/16 | 25.7 | 6 | 8 | 7.61 | 49.4 | 8.94 |
| L8x6x5/8 | 28.5 | 6 | 8 | 8.41 | 54.2 | 9.86 |
| L6x6x3/4 | 28.7 | 6 | 6 | 8.46 | 28.1 | 6.64 |
| L6x6x7/8 | 33.1 | 6 | 6 | 9.75 | 31.9 | 7.61 |
| L8x6x3/4 | 33.8 | 6 | 8 | 9.99 | 63.5 | 11.7 |
| L6x6x1 | 37.4 | 6 | 6 | 11 | 35.4 | 8.55 |
| L8x6x7/8 | 39.1 | 6 | 8 | 11.5 | 72.4 | 13.4 |
| L8x6x1 | 44.2 | 6 | 8 | 13.1 | 80.9 | 15.1 |
| L5x5x5/16 | 10.3 | 5 | 5 | 3.07 | 7.44 | 2.04 |
| L5x5x3/8 | 12.3 | 5 | 5 | 3.65 | 8.76 | 2.41 |
| L5x5x7/16 | 14.3 | 5 | 5 | 4.22 | 10 | 2.78 |
| L5x5x1/2 | 16.2 | 5 | 5 | 4.79 | 11.3 | 3.15 |
| L5x5x5/8 | 20 | 5 | 5 | 5.9 | 13.6 | 3.85 |
| L5x5x3/4 | 23.6 | 5 | 5 | 6.98 | 15.7 | 4.52 |
| L5x5x7/8 | 27.2 | 5 | 5 | 8 | 17.8 | 5.16 |
| L4x4x1/4 | 6.6 | 4 | 4 | 1.93 | 3 | 1.03 |
| L4x4x5/16 | 8.2 | 4 | 4 | 2.4 | 3.67 | 1.27 |
| L4x4x3/8 | 9.8 | 4 | 4 | 2.86 | 4.32 | 1.5 |
| L6x4x5/16 | 10.3 | 4 | 6 | 3.03 | 11.4 | 2.77 |
| L4x4x7/16 | 11.3 | 4 | 4 | 3.3 | 4.93 | 1.73 |
| L6x4x3/8 | 12.3 | 4 | 6 | 3.61 | 13.4 | 3.3 |
| L4x4x1/2 | 12.8 | 4 | 4 | 3.75 | 5.52 | 1.96 |
| L7x4x3/8 | 13.6 | 4 | 7 | 4 | 20.5 | 4.42 |
| L6x4x7/16 | 14.3 | 4 | 6 | 4.18 | 15.4 | 3.81 |
| L4x4x5/8 | 15.7 | 4 | 4 | 4.61 | 6.62 | 2.38 |
| L7x4x7/16 | 15.7 | 4 | 7 | 4.63 | 23.6 | 5.11 |
| L6x4x1/2 | 16.2 | 4 | 6 | 4.75 | 17.3 | 4.31 |
| L8x4x7/16 | 17.2 | 4 | 8 | 5.11 | 34.2 | 6.59 |
| L7x4x1/2 | 17.9 | 4 | 7 | 5.26 | 26.6 | 5.79 |
| L6x4x9/16 | 18.1 | 4 | 6 | 5.31 | 19.2 | 4.81 |
| L4x4x3/4 | 18.5 | 4 | 4 | 5.44 | 7.62 | 2.79 |
| L8x4x1/2 | 19.6 | 4 | 8 | 5.8 | 38.6 | 7.48 |
| L6x4x5/8 | 20 | 4 | 6 | 5.86 | 21 | 5.29 |
| L8x4x9/16 | 21.9 | 4 | 8 | 6.49 | 42.9 | 8.34 |
| L7x4x5/8 | 22.1 | 4 | 7 | 6.5 | 32.4 | 7.12 |
| L6x4x3/4 | 23.6 | 4 | 6 | 6.94 | 24.5 | 6.23 |
| L8x4x5/8 | 24.2 | 4 | 8 | 7.16 | 47 | 9.2 |
| L7x4x3/4 | 26.2 | 4 | 7 | 7.74 | 37.8 | 8.39 |
| L6x4x7/8 | 27.2 | 4 | 6 | 8 | 27.7 | 7.13 |
| L8x4x3/4 | 28.7 | 4 | 8 | 8.49 | 55 | 10.9 |
| L8x4x7/8 | 33.1 | 4 | 8 | 9.79 | 62.6 | 12.5 |
| L8x4x1 | 37.4 | 4 | 8 | 11.1 | 69.7 | 14 |
| L3-1/2x3-1/2x1/4 | 5.8 | 3.5 | 3.5 | 1.7 | 2 | 0.787 |
| L4x3-1/2x1/4 | 6.2 | 3.5 | 4 | 1.82 | 2.89 | 1.01 |
| L5x3-1/2x1/4 | 7 | 3.5 | 5 | 2.07 | 5.36 | 1.55 |
| L3-1/2x3-1/2x5/16 | 7.2 | 3.5 | 3.5 | 2.1 | 2.44 | 0.969 |
| L4x3-1/2x5/16 | 7.7 | 3.5 | 4 | 2.25 | 3.53 | 1.25 |
| L3-1/2x3-1/2x3/8 | 8.5 | 3.5 | 3.5 | 2.5 | 2.86 | 1.15 |
| L5x3-1/2x5/16 | 8.7 | 3.5 | 5 | 2.56 | 6.58 | 1.92 |
| L4x3-1/2x3/8 | 9.1 | 3.5 | 4 | 2.68 | 4.15 | 1.48 |
Family overview
What are AISC Angles?
AISC L-shapes are single angles used for bracing, connections and built-up members. Equal-leg and unequal-leg angles are listed with leg lengths and thickness. Principal axes for angles do not always align with the geometric legs, so property interpretation and connection eccentricity matter. This hub filters the finder to angles for comparison, charts and calculator handoff when a beam-style model is useful.
Designations
Understanding Angles designations
L4×4×1/2
Angle designations list leg lengths and thickness, such as L4×4×1/2 for equal 4 in legs with 1/2 in thickness. Unequal-leg angles list both leg sizes before thickness.
Properties
Angles properties explained
These properties are especially relevant when comparing Angles. View the complete property glossary.
| Symbol | Property | Units | Why it matters |
|---|---|---|---|
| Weight | Weight | lb/ft, kg/m | Mass per unit length; used for self-weight and economy comparisons |
| Width | Leg length (shorter) | in, mm | Overall width (angle leg or HSS side) |
| Height | Leg length (longer) | in, mm | Overall depth and clearance |
| t | Leg thickness | in, mm | Leg thickness for angles |
| A | Cross-sectional area | in², mm² | Total steel cross-sectional area |
| Ix | Moment of inertia (x) | in⁴, mm⁴ | Major-axis flexural stiffness |
| Iy | Moment of inertia (y) | in⁴, mm⁴ | Minor-axis flexural stiffness |
| Sx | Elastic section modulus (x) | in³, mm³ | Elastic bending property about the x-axis |
| Sy | Elastic section modulus (y) | in³, mm³ | Elastic bending property about the y-axis |
| Zx | Plastic section modulus (x) | in³, mm³ | Plastic bending property about the x-axis |
| Zy | Plastic section modulus (y) | in³, mm³ | Plastic bending property about the y-axis |
| rx | Radius of gyration (x) | in, mm | Strong-axis radius of gyration |
| ry | Radius of gyration (y) | in, mm | Weak-axis radius of gyration and lateral stability relevance |
| J | Torsional constant | in⁴, mm⁴ | Torsional constant |
| Cw | Warping constant | in⁶, mm⁶ | Warping constant for lateral-torsional behaviour |
Library summary
Computed Angles summary
The current AISC Angles library contains 137 sections across 11 nominal-depth series. Published weights range from 1.65 to 105.00 lb/ft , and actual depths range from 1.50 to 12.00 inches .
- Lightest section
- L2X2X1/8
- Heaviest section
- L12X12X1-3/8
- Ix range
- 0.19 – 413.00 in⁴
- Sx range
- 0.13 – 48.60 in³
Selection
How to compare Angles
- Match both leg lengths and thickness to the connection or brace detail.
- Compare area and radii of gyration for compression members.
- Account for eccentricity and orientation in the design model.
- Do not select by thickness alone when leg length controls the fit.
Beam calculator
Analyze this family in Optimal Beam
Select any angle and load available geometric properties into Optimal Beam when that analysis path is relevant.
Source: AISC Shapes Database v16.0 · Verified July 2026 · View methodology
Questions & answers
Angles FAQs
How are AISC angles designated?
Angles list leg lengths and thickness, for example L4×4×3/8 or L5×3×1/2 for unequal legs.
What is the difference between equal-leg and unequal-leg angles?
Equal-leg angles have matching leg lengths. Unequal-leg angles have different leg lengths and are common where one leg must fit a different connection width.
Which properties matter for angles?
Leg sizes, thickness, area and radii of gyration are commonly reviewed. Principal-axis properties matter for buckling and orientation-sensitive checks.
Can I analyze an angle in Optimal Beam?
You can load the section’s published geometric and section properties into the calculator when a beam-model check is appropriate for your use case.