Difference between tensile and yield strength of a metal

In summary, tensile strength refers to a material's ability to resist tension forces and yield strength refers to its ability to resist compression or bending forces. Both are important in determining a metal's strength, but yield strength is more closely related to real-world stresses. Tensile strength is measured by applying force until the material breaks, while yield strength is measured by applying force until a specific amount of deformation is reached. It is possible for the tensile strength to be higher than the yield strength, and temperature and environmental factors can affect both.
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differance between tensile and yield strength. please help.

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Tensile strength and yield strength are both measures of a metal's ability to resist deformation under tension. However, they differ in the specific type of deformation they measure and the point at which deformation occurs.

Tensile strength is the maximum stress a metal can withstand before it breaks or fractures when pulled in opposite directions. It is a measure of the metal's overall strength and is important in determining its suitability for structural applications.

Yield strength, on the other hand, is the stress at which a metal begins to deform plastically, meaning it permanently changes shape without breaking. This is often referred to as the "elastic limit" of the metal. Yield strength is a measure of a metal's ability to withstand stress without undergoing permanent deformation and is important in determining its ductility and formability.

In summary, tensile strength measures a metal's ability to withstand breaking under tension, while yield strength measures its ability to resist permanent deformation. Tensile strength is typically higher than yield strength, as the metal can withstand more stress before breaking than it can before deforming. Both measures are important in understanding a metal's mechanical properties and determining its potential uses.
 

1. What is the difference between tensile and yield strength of a metal?

Tensile strength refers to the maximum stress a material can withstand before breaking or fracturing. It is a measure of the material's ability to resist tension or pulling forces. On the other hand, yield strength is the maximum stress a material can withstand without permanently deforming or changing its shape. It is a measure of the material's ability to resist compression or bending forces.

2. Which one is more important in determining the strength of a metal?

Both tensile and yield strength are important factors in determining the strength of a metal. However, yield strength is more closely related to the material's ability to withstand real-world stresses and is often used to design and test materials for structural applications.

3. How are tensile and yield strength measured?

Tensile strength is measured by applying a gradually increasing tensile force to a material until it breaks. The maximum force applied is then divided by the cross-sectional area of the material to determine the tensile strength. Yield strength is measured by applying a gradually increasing compressive force to a material until it reaches a specific amount of deformation or strain.

4. Can the tensile strength be higher than the yield strength?

Yes, it is possible for the tensile strength to be higher than the yield strength. This is because tensile strength measures the maximum stress a material can withstand before breaking, while yield strength measures the maximum stress a material can withstand before experiencing permanent deformation. In some cases, a material may be able to withstand a higher amount of stress before breaking than it can before permanently deforming.

5. How do temperature and other environmental factors affect tensile and yield strength?

Temperature and other environmental factors can have a significant impact on the tensile and yield strength of a metal. High temperatures can decrease both the tensile and yield strength of a material, while low temperatures can increase them. Additionally, exposure to corrosive environments can also weaken a metal's strength over time. It is important to consider these factors when selecting a material for a specific application.

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