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The section properties like Inertia, Modulus, Area and Radius for a Square at center position cab be calculated though online Square Tube Section Properties Calculator.

Table of Contents:

Formula

**Inertia = (a ^{4}- b^{4}) / 12**

Modulus = (a^{4} - b^{4}) / 6 * a

Radius = ((a^{2} + b^{2}) / 12)^{1/2} Area = a^{2} - b^{2}

Structural or mechanical tube is(at least, externally) dimensionally accurate and has a bright finish. It is also made from mild steel, and sometimes rolled and welded too.

**Example:**

Calculate the Square Tube Section properties for the given details.

A (Exterior Side) mm = 25

B (Interior Side)mm = 5

**Solution:**

**Apply Formula:**

Inertia = (a^{4}- b^{4}) / 12

Modulus = (a^{4} - b^{4}) / 6 * a

Radius = ((a^{2} + b^{2}) / 12)^{1/2} Area = a^{2} - b^{2}

**Inertia = 32500 (mm ^{4})
Modulus = 78000 (mm^{3})
Radius = 2.124591463996994 (mm)
Area = 600 (mm^{2})**