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Screw Tensile Strength Formula:
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Tensile strength (TS) is the maximum stress that a material can withstand while being stretched or pulled before breaking. For screws, it represents the maximum axial load the screw can withstand without failure.
The calculator uses the tensile strength formula:
Where:
Explanation: The formula calculates the stress distribution across the screw's cross-sectional area when subjected to tensile loading.
Details: Calculating tensile strength is crucial for determining the mechanical integrity of screws, ensuring they can withstand expected loads without failure, and selecting appropriate screws for specific applications.
Tips: Enter the applied load in Newtons and the cross-sectional area in square meters. Both values must be positive numbers greater than zero for accurate calculation.
Q1: What units should I use for the calculation?
A: Use Newtons (N) for load and square meters (m²) for area to get results in Pascals (Pa). For other units, convert accordingly.
Q2: How do I measure the cross-sectional area of a screw?
A: For standard screws, use the tensile stress area which is typically smaller than the nominal area due to threading. Refer to engineering tables for specific screw sizes.
Q3: What is a typical tensile strength range for screws?
A: Tensile strength varies by material and grade. Common steel screws range from 400-1000 MPa, while high-strength bolts can exceed 1200 MPa.
Q4: Why is tensile strength important in screw selection?
A: It ensures the screw can withstand the expected loads without breaking, preventing structural failures and ensuring safety in mechanical assemblies.
Q5: Can this calculator be used for other fasteners?
A: Yes, the same formula applies to bolts, rods, and other tensile-loaded fasteners, though the appropriate cross-sectional area must be used.