Nickel,the,metal,material,for, business, insurance Nickel in the metal material for medical
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Medical 316Land 317L austeniticstainless steel nickel-content requirement is 10% to 14%, in medical 304L stainless steel the nickel contentis 8% to 10%. However, nickel is a potentially allergenicfactors, a large number of clinical manifestations have proved that nickel andits compounds is hazard to humans. One of the most common damage is nickelcontact dermatitis, higher incidence, strong allergic will cause eczema. Whenit contact with the human body, nickel ions can penetrate into the pores andsebaceous skin inside to cause skin irritation, and its clinical manifestationsis dermatitis and eczema. EU 1 and 2 coins release of nickel elements cancause strong allergic reactions to people have allergy.What should arouse vigilance is that theenrichment of nickel ions in vivo may induce toxic effects, cause cell damageand inflammation, have the risk of teratogenic and carcinogenic hazardous to organisms.Nickel-containing medical metal materials implant in the human body, due to theinevitable corrosion, wear, nickel ions and other metal ions released intonearby tissue, easy to induce allergies, infections, and other tissue reaction,especially in patients allergic to nickel is particularly serious. Once have areport show that the release of metal ions such as nickel, chromium andmolybdenum in stainless steel cardiovascular stents caused by an allergicreaction may be one of the indirect causes of cardiovascular stent restenosis.Because of the nickel element is harmful tohuman body, many countries enacted nickel content increasing demand for dailyand medical metal material, the highest nickel content allowed in the relevantstandards are getting lower and lower. In view of the nickel-containing metalmaterial for medical harm that may be caused to human health, metalpowder supplier suggest that the best way is strictly prohibit orrestrict the nickel content in various metallic materials directly contact withthe human body (such as implantable devices, dental materials, jewelry, etc.) .Research and development of new stainlesssteel thinking is using nitrogen instead of nickel elements to stabilize thestructure of austenitic stainless steel, the major scientific issues, includingthe chemical composition of the new stainless steel resulting optimal design(in particular, the optimization of the nitrogen content in steel, OK)highnitrogen stainless steel smelting and processing, the influence of nitrogen onthe biocompatibility of stainless steel and related mechanisms. For example,high nitrogen nickel austenitic stainless steel compared to traditional medicalstainless steel is just different in composition, that is abandoned nickel but addednitrogen, while the austenitic structure has not changed, but shown a more excellentblood compatibility.Through years of research, the scientificteam found that, first of all nickel removal improve the blood compatibility ofstainless steel, With the improvement of the nitrogen content in steel, the hemocompatibilityof high nitrogen nickel austenitic stainless steel will gradually improved. Theresearchers said that: With the deepening of the basic research, medical highnitrogen nickel austenitic stainless steel material smelting and processingtechnology is maturing and will certainly promote the clinical application anddevelopment of new medical stainless steel. The new non-nickel austeniticstainless steel in medical equipment, food and catering equipment, jewelry, andother regular contact with the human body, will have a lot of demand for market,and may gradually replace the existing medical stainless steel containingnickel.Source:http://www.mhcmp.com
Nickel,the,metal,material,for,