Square Tubing Strength Calculator

Calculate Square Tubing Strength

This calculator helps you determine the strength properties of square tubing based on dimensions, material, and loading conditions.

Unit System

Outer Width

Wall Thickness

Material

Loading Type

Load Type

Beam Length

Load Value

Safety Factor

Recommended range: 1.5 to 5.0

Calculation Results

Maximum Stress

Maximum Deflection

Maximum Safe Load

Safety Status

Property	Value

Square Tubing Properties

Key Properties

Section Modulus (S): Measures the tubing's ability to resist bending.
Moment of Inertia (I): Indicates resistance to bending.
Radius of Gyration (r): Used for buckling calculations.

Material Properties

Material	Elastic Modulus (MPa)	Yield Strength (MPa)
Steel (A500 Grade B)	200,000	290
Stainless Steel (304)	193,000	215
Aluminum (6061-T6)	69,000	240

Loading Types

Fixed at one end, free at the other. Commonly used for overhanging structures.

Supported at both ends, free to rotate. Common in bridges and floor joists.

Fixed at both ends, cannot rotate. Provides the highest stiffness for a given span.

Understanding Square Tubing Strength

Key Formulas

Section Properties

Area: \( A = b^2 - (b - 2t)^2 \)
Moment of Inertia: \( I = \frac{b^4 - (b - 2t)^4}{12} \)
Section Modulus: \( S = \frac{I}{b/2} \)

Where:

\( b \) = Outer width
\( t \) = Wall thickness

Stress and Deflection

For a cantilever beam with point load at the end:

Maximum Stress: \( \sigma = \frac{F \cdot L}{S} \)
Maximum Deflection: \( \delta = \frac{F \cdot L^3}{3 \cdot E \cdot I} \)