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Structural · L — angle

L4x3x3/8 Steel Angle — Dimensions & Properties

L4x3x3/8 weighs 8.5 lb/ft and is about 4 in deep. Below: the full AISC section properties, a scaled cross-section, and a pre-filled weight calculator.

Weight
8.5lb/ft
Depth
4in
Width
3in
Area
2.49in²
Shape
L4X3X3/8 · L — angle

Enter feet + inches, e.g. 20' or 18' 6".

= 20' (240″)
pcs
Cost estimate (optional)
$/lb

Optional. Prices are volatile — use your current mill/supplier rate.

Total weight
1 × L4X3X3/8
170lb
Per piece
170lb
Pieces
1
Total
170lb
Tons
0.085t
3"4"
ƒShow the math
  1. 1.Weight per foot (from AISC)per AISC Shapes Database v16.0

    L4X3X3/8 is a listed shape; its nominal weight is a published property.

    = 8.5 lb/ft
  2. 2.Length in feet
    length (in) ÷ 12
    240 ÷ 12
    = 20 ft
  3. 3.Weight per piece
    weight per foot × length
    8.5 × 20
    = 170 lb
  4. 4.Total weight
    weight per piece × quantity
    170 × 1
    = 170 lb
  5. 5.Convert to tons
    total lb ÷ 2000
    170 ÷ 2000
    = 0.085 tons

Section properties

Geometry
Weight
8.5lb/ft
Area, A
2.49in²
Depth, d
4in
Short leg, b
3in
Thickness, t
0.375in
Strong axis (x-x)
Ix
3.96in⁴
Sx
1.46in³
Zx
2.64in³
rx
1.26in
Weak axis (y-y)
Iy
1.92in⁴
Sy
0.866in³
Zy
1.58in³
ry
0.879in
Torsion & warping
rz
0.633in
Before you rely on this
  • Listed weight is the AISC theoretical (nominal) weight per foot. Actual mill weight varies within ASTM rolling tolerance, roughly ±2.5%.
  • This is bare member steel only. Add plates, stiffeners, connections, bolts, and coatings for a full erected-steel takeoff.

Similar shapes

Same series and nearest depths — compare weight and section modulus when you are sizing.

L4x4x1/4 6.6 lb/ftL4x4x3/8 9.8 lb/ftL4x4x1/2 12.8 lb/ftL3x3x1/4 4.9 lb/ftL3x3x3/8 7.2 lb/ftL5x5x3/8 12.3 lb/ftL2x2x1/4 3.19 lb/ftL6x6x3/8 14.9 lb/ftL6x6x1/2 19.6 lb/ft

L4x3x3/8 — questions

How much does a L4x3x3/8 weigh per foot?
A L4x3x3/8 weighs 8.5 lb/ft. Over a 20-foot length that is 170 lb (0.085 tons); a 30-foot length is 255 lb.
What are the dimensions of a L4x3x3/8?
L4x3x3/8 has an actual depth of 4 in and a short leg of 3 in, a leg thickness of 0.375 in. Cross-sectional area is 2.49 in².
What is the moment of inertia and section modulus of a L4x3x3/8?
About its strong axis, L4x3x3/8 has a moment of inertia Ix of 4 in⁴ and a section modulus Sx of 1.46 in³, with a plastic section modulus Zx of 2.64 in³. Use these with your engineer's design values — they are geometric properties, not an allowable load.

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Sources & references

Estimates for planning purposes only. Verify all results against the code edition adopted in your jurisdiction and with your Authority Having Jurisdiction (AHJ). This tool is not a substitute for a licensed professional engineer. See our methodology, sources, and code editions.

Data: AISC Shapes Database v16.0, © AISC — used per its developer-use provision.