Physical properties of stainless steel, the main material of acupuncture needles-山東省蘭陵縣亞泰醫療器械有限公司

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Physical properties of stainless steel, the main material of acupuncture needles

點擊次數:  更新時間:21/04/15 09:36:04 來源:www.webrebl.com關閉
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   According to relevant sources, the main material of the needle body of the current acupuncture needles on the market is stainless steel. The main physical properties of this material are:
   1. Carbon steel, ferritic and martensitic stainless steels are magnetic, and austenitic stainless steels are non-magnetic, but they will produce magnetism when they are cold-worked and hardened to form martensite transformation. Heat treatment can be used to eliminate this martensite. The tissue is restored to its non-magnetic properties.
   2. The order of linear expansion coefficient is similar, austenitic stainless steel is higher and carbon steel is smaller.
   3. Resistivity: Resistivity is in increasing order of carbon steel, ferritic, martensitic and austenitic stainless steel.
   4. Density: The density of carbon steel is slightly higher than that of ferritic and martensitic stainless steel, and slightly lower than that of austenitic stainless steel. 

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