Tensile strength and yield strength of steel bars
Release time:
2024-04-03
In the selection and use of steel bars, mechanical performance indicators such as tensile strength and yield strength need to be comprehensively considered to ensure the safety and reliability of the structure.
The tensile strength and yield strength of steel bars are important mechanical property indicators of steel bars.
Tensile strength refers to the maximum tensile force before the material breaks when the stress reaches the maximum value during the stretching process of the steel bar. It characterizes the maximum load-bearing capacity of the material under static tensile conditions and is the critical value for the transition of metal from uniform plastic deformation to local concentrated plastic deformation. For different grades of steel bars, the tensile strength is different. For example, the ultimate strength (i.e. tensile strength) of grade one steel is 310MPa, the ultimate strength of grade two steel is 510MPa, and the ultimate strength of grade three steel is 600MPa.
The yield strength is the critical point at which the steel bar begins to undergo plastic deformation under stress, that is, the stress value of the steel bar reaches the strength value of the yield stress. It is the basis for determining the strength of steel in structural design and is of great significance to ensure the safety and reliability of the structure. Different grades of steel bars have different yield strengths. For example, the yield strength of first-grade steel is 235MPa, the yield strength of second-grade steel is 335MPa, and the yield strength of third-grade steel is 400MPa.
In the selection and use of steel bars, mechanical performance indicators such as tensile strength and yield strength need to be comprehensively considered to ensure the safety and reliability of the structure.
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