# What is strength formula?

The term "strength" in the context of materials can refer to different types of strength, such as tensile strength, compressive strength, yield strength, etc. Each type of strength has its own specific formula for calculation. Here are the formulas for some common types of strength:

1. Tensile Strength (σ_t): Tensile strength is the maximum stress that a material can withstand when subjected to a pulling force before breaking. The formula for tensile strength is:

Tensile Strength (σ_t) = Maximum Load (F_max) / Cross-sectional Area (A)

where:

• Tensile Strength (σ_t) is the tensile strength of the material in Pascals (Pa) or Megapascals (MPa).
• Maximum Load (F_max) is the maximum force applied to the material before it breaks, measured in Newtons (N) or pounds (lb).
• Cross-sectional Area (A) is the original cross-sectional area of the material perpendicular to the applied force, measured in square meters (m²) or square inches (in²).
1. Compressive Strength (σ_c): Compressive strength is the maximum stress that a material can withstand when subjected to a compressive force before failing. The formula for compressive strength is similar to tensile strength:

Compressive Strength (σ_c) = Maximum Load (F_max) / Cross-sectional Area (A)

where the variables have the same meaning as in the tensile strength formula.

1. Yield Strength (σ_y): Yield strength is the stress at which a material begins to deform plastically (undergoes permanent deformation) without any additional increase in load. The formula for yield strength is:

Yield Strength (σ_y) = Yield Load (F_y) / Original Cross-sectional Area (A)

where:

• Yield Strength (σ_y) is the yield strength of the material in Pascals (Pa) or Megapascals (MPa).
• Yield Load (F_y) is the load at which the material starts to deform plastically, measured in Newtons (N) or pounds (lb).
• Original Cross-sectional Area (A) is the initial cross-sectional area of the material perpendicular to the applied force, measured in square meters (m²) or square inches (in²).

It's important to note that the strength of materials can be influenced by various factors, and the values obtained from these formulas may differ depending on the specific testing methods and conditions used to determine the material's strength.

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