Spring Rate Calculator

How to Use the Spring Rate Calculator

This guide will help you navigate through the Spring Rate Calculator, aiding in calculating various spring parameters based on the inputs you provide.

Step 1: Enter Wire Diameter

Begin by entering the wire diameter in inches into the field labeled Wire Diameter (inches). The acceptable range is from 0.001 to 1.0 inches, with precision up to three decimal places.

Step 2: Enter Mean Spring Diameter

Next, input the mean spring diameter in inches into the field labeled Mean Spring Diameter (inches). You can enter values ranging from 0.1 to 10.0 inches, rounded to the nearest tenth.

Step 3: Enter Number of Active Coils

Proceed by specifying the number of active coils in the field labeled Number of Active Coils. Ensure that your entry is a whole number between 1 and 100.

Step 4: Select Spring Material

Choose the material of the spring by selecting an option from the dropdown menu labeled Spring Material. The available options include:

• Music Wire
• Hard-Drawn Wire
• Chrome-Vanadium
• 302 Stainless Steel

Step 5: Calculate Results

Upon entering all required input fields, the calculator will process the information and output the results, including the following:

• Spring Index (C): This is calculated as the ratio of the mean spring diameter to the wire diameter.
• Wahl Correction Factor: This factor is derived from the spring index and accounts for the additional stress in the spring due to curvature.
• Spring Rate: This indicates the stiffness of the spring, given in pounds per inch (lbs/in).
• Solid Height: The total height when all coils are compressed solid, displayed in inches.
• Recommended Maximum Deflection: Advises the maximum permissible deflection for the spring, ensuring longevity and performance, in inches.

Review the calculated results to determine if the spring parameters meet your requirements. Adjust the input values if necessary to explore other configurations.