The hardness of galvanized steel mainly depends on its manufacturing process and application scenarios. Galvanized steel with general hardness, high hardness, and ultra-high hardness each have their specific hardness ranges:
General hardness: The hardness of steel wire is generally 560MPa, and the hardness of zinc layer is between 70-100HV.
High hardness: The hardness of the steel wire exceeds 600MPa, and the hardness of the zinc layer is between 100-120HV.
Ultra high hardness: The hardness of the steel wire exceeds 1000MPa, and the hardness of the zinc layer is between 120-150HV.
Factors affecting the hardness of galvanized steel
The hardness of galvanized steel is influenced by various factors, including:
Raw material composition: The material composition of steel wire has a significant impact on its tensile strength. For example, adding elements such as C, Si, Cr, and V may alter the properties of steel wire.
Wire diameter: The diameter of the wire also affects its hardness. Generally speaking, increasing the diameter of the heat-treated wire rod can improve the strength of the steel wire, but it is necessary to balance strength and toughness.
Processing technology: Annealing process, heat treatment temperature and time, and other conditions can all affect the hardness of galvanized steel.
Suggestions for selection in practical applications
In practical applications, the hardness of galvanized steel should be determined based on the specific usage scenario. Galvanized steel with different hardness is suitable for different application scenarios. For example, galvanized steel with general hardness is suitable for situations that require certain strength and toughness, while galvanized steel with high hardness and ultra-high hardness is suitable for situations that require higher strength and wear resistance.
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