Fillet Weld Strength Calculator

Fillet Weld Strength Calculator

This tool helps you estimate the strength of a single transverse fillet weld joint based on essential parameters such as weld length, size, and maximum permissible tensile stress.

How It Works

To use the calculator, you need to input the following values:

1. Length of the weld (l): The total length of the weld in millimeters.
2. Size of weld (s): The size (thickness) of the weld in millimeters.
3. Maximum permissible tensile stress (σ_t): The tensile stress in megapascals (MPa) that the weld can withstand (usually equal to the strength of Welding Consumables).

Calculation Formula

The strength of the weld is calculated using the formula:

• P=0.707×s×l×σ_t​

Where:

• P = Strength of the weld in kilonewtons (kN)
• s = Size of the weld in mm
• l = Length of the weld in mm
• σ_t​ = Maximum permissible tensile stress in MPa

Example Calculation

Let’s consider a new example:

• Weld Type: Transverse fillet weld (single)
• Length of the weld (l): 150 mm
• Size of weld (s): 6 mm
• Maximum permissible tensile stress (σ_t): 80 MPa

Using the formula:

• P = 0.707 x 6 x 150 x 80

Calculating step-by-step:

1. 0.707×6=4.24
2. 4.242×150=636.3
3. 636.3×80=50880

Now, convert to kilonewtons (kN):

• P = 50880/1000
• P = 50.88 kN

Result

For this example, the estimated strength of the single transverse fillet weld joint is 50.880 kN.

Try It Out!

Use the calculator above to input your own values and calculate the strength of your weld joints.

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