L3x2x1/4 — Dimensions, Weight & Section Properties
Steel angle (L-shape) per ASTM A6 / AISC Steel Construction Manual
L3x2x1/4 is a hot-rolled steel angle with a 3 in (76.2 mm) long leg and a 2 in (50.8 mm) short leg, 0.25 in thick, weighing 4.1 pounds per foot (6.1 kg/m). All values below are the standard AISC published section properties, with metric equivalents alongside.
Typical uses: bracing, lintels, shelf supports, frames, and connection material. Angles are weak about their minor axis — long unbraced angles need lateral restraint. For a quick check, see the deflection example below or open the beam calculator.
Dimensions
| Long leg | 3 in (76.2 mm) |
| Short leg | 2 in (50.8 mm) |
| Thickness t | 0.25 in (6.4 mm) |
Weight & Cross-Section
| Weight per foot | 4.1 lb/ft (6.1 kg/m) |
| 20 ft bar | 82 lb |
| 40 ft bar | 164 lb |
| Area A | 1.19 in² (7.7 cm²) |
Section Properties (strong / weak axis)
| Moment of inertia Ix | 1.08 in⁴ (45 cm⁴) |
| Section modulus Sx | 0.54 in³ (9 cm³) |
| Radius of gyration rx | 0.95 in |
| Moment of inertia Iy | 0.39 in⁴ (16 cm⁴) |
| Section modulus Sy | 0.26 in³ (4 cm³) |
| Radius of gyration ry | 0.57 in |
Compared with the neighbouring sizes
| Shape | legs (in) | lb/ft | Ix (in⁴) | Sx (in³) | Δ weight | Δ Ix |
|---|---|---|---|---|---|---|
| L3x2x1/4 (this page) | 3 × 2 | 4.1 | 1.08 | 0.54 | — | — |
Deflection example
A simply supported L3x2x1/4 spanning 5 ft with a 10 kip point load at midspan deflects 1.44 in (E = 29,000 ksi, Ix = 1.08 in⁴). The L/360 serviceability limit for this span is 0.17 in — the shape does NOT pass this quick check.
Calculate with your own span and load →
Frequently asked questions
How much does a L3x2x1/4 angle weigh?
L3x2x1/4 weighs 4.1 pounds per foot (6.1 kg/m). A 20 ft bar weighs 82 lb and a 40 ft bar 164 lb.
What are the dimensions of a L3x2x1/4?
L3x2x1/4 has a 3 in long leg and a 2 in short leg, both 0.25 in thick. Angle legs are measured outside-to-outside, and both legs share the same thickness.
What are the dimensions of a L3x2x1/4 in mm?
L3x2x1/4 has a 76.2 mm long leg and a 50.8 mm short leg, 6.4 mm thick. In metric section properties: Ix = 45 cm⁴, Sx = 9 cm³.
How much does a L3x2x1/4 weigh in kg?
6.1 kg per meter. A 6 m bar weighs 37 kg and a 12 m bar 73 kg — handy when ordering US shapes from metric suppliers.
What is the moment of inertia of a L3x2x1/4?
About the strong axis, Ix = 1.08 in⁴ (45 cm⁴) with section modulus Sx = 0.54 in³. About the weak axis, Iy = 0.39 in⁴ and Sy = 0.26 in³. Use the beam deflection calculator to turn these into deflection and stress for your span and load.
Values are entered from the governing standard’s published tables and cross-checked programmatically against its mass and section formulas before publication. Spotted an error? Write to advertising@metalabout.net — verified corrections ship within days. About