The strength of tungsten carbide needles generally does not change with temperature, because of its high melting point and low thermal expansion coefficient, so it can still maintain good strength and hardness in high temperature environments. However, in extreme cases, such as exceeding its service temperature range, the strength and hardness of tungsten carbide needles may be affected. In addition, tungsten carbide needles may also be damaged by fatigue due to long-term use, which will also affect their strength. Therefore, when using tungsten carbide needles, it is necessary to follow the correct use and maintenance methods to ensure its performance and life.
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