The mechanical properties of alloy steel pipes are an important basis for material selection, primarily including three core indicators: tensile strength, yield strength, and elongation. The following are the mechanical property requirements for common grades (according to GB/T 5310 — Seamless steel tubes for high-pressure boilers):
Indicator Explanation:
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Tensile strength: The maximum stress a material can withstand before tensile fracture. Reflects the ultimate load-bearing capacity of the pipe.
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Yield strength: The stress value at which a material begins to undergo plastic deformation. Serves as the main reference for pipeline design.
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Elongation: The plastic deformation capacity of a material after fracture. Reflects the toughness of the pipe.
In actual material selection, ensure that the mechanical properties of the selected pipe meet the requirements of the corresponding standards and retain an appropriate safety factor.
Applicable Scenarios: Boiler heating surface pipelines, high-temperature steam pipelines, and pressure vessel tubes.
