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<div id="0ewem0q" class="news_con"> <h1 class="con_tit">貴金屬回收小知識</h1> <div id="asy08au" class="con_spit"> 點(diǎn)擊：1501 時(shí)間：2020-06-20 14:44:10 屬于： <div id="0uag2oe" class="proinfo " id="detailvalue0"> <p>貴金屬主要指金、銀和鉑族金屬（釕、銠、鈀、鋨、銥、鉑）等8種金屬元素。這些金屬大多數擁有美麗的色澤，對化學(xué)藥品的抵抗力相當大，在一般條件下不易引起化學(xué)反應。它們被用來(lái)制作珠寶和紀念品，而且還有廣泛的工業(yè)用途。目前市場(chǎng)上銷(xiāo)售的貴金屬首飾可分為金首飾、銀首飾、鉑首飾和鈀首飾4種。 <br>根據金含量的不同，通?？煞譃?8K金、足金和千足金等。1K 等于100％除以24，即1K約等于4．1667％。24K的理論純度為100％。 <br>①18K金首飾的金含量不低于750‰，可標識為18K 或G18K、G750、Au750、金18K、金750。 <br>②足金首飾的金含量不低于990‰，可標識為足金或G990、Au990、金990。 <br>③千足金首飾的金含量不低于999‰，可標識為千足金或G999、Au999、金999。此外市面上（特別在國外）還可見(jiàn)到一些9K（金含量不低于37.5%）、14K（金含量不低于58.5%）和22K（金含量不低于91.6%）之類(lèi)的金首飾。 <br>市面上常見(jiàn)的銀首飾有： <br>①925銀，有人也稱(chēng)為紋銀，要求銀的含量不得低于925‰，其他75‰可以是銅或抗氧化元素，可標識為S925或Ag925、銀925。 <br>②足銀，要求銀的含量不得低于990‰，可標識為S990 或Ag990、銀990。偶爾也能見(jiàn)到800 銀（銀含量不得低于800‰）。近幾年發(fā)現生產(chǎn)廠(chǎng)家為了防止銀首飾氧化，常常在925銀和足銀的表面再鍍上一層鎳，檢測時(shí)若不小心就很容易將其誤認為是假貨或仿銀制品。 <br>鉑首飾 <br>鉑也稱(chēng)白金。近幾年，隨著(zhù)消費層次的不斷提升，鉑首飾越來(lái)越受到城鄉男女消費者的青睞。首飾市場(chǎng)中，常見(jiàn)的鉑首飾有Pt900、 Pt950和Pt990。 <br>①Pt900，要求鉑的含量不得低于900‰，可標識為Pt900或鉑900。 <br>②Pt950，要求鉑的含量不得低于950‰，可標識為Pt950或鉑950。 <br>③Pt990，要求鉑的含量不得低于990‰，可標識為Pt990或鉑990、足鉑（足白金）。<a >貴金屬回收</a>偶爾也能見(jiàn)到Pt850（鉑的含量不得低于85.0‰）， Pt750（鉑的含量不得低于75.0‰）。 </p> </div> <div id="0qick0w" class="clear"> </div> <div id="q00aes2" class="Previous"><b>上一條：</b><a href="news-ODXmV0-.html">貴金屬回收的好處有哪些？</a></div> <div id="eiaueus" class="Next"><b>下一條：</b><a href="news-Go8Xme-.html">貴金屬回收關(guān)鍵影響因素有哪些？</a></div> </div> </div> </div> <div id="yqiokym" class="clear"> </div> </div></div><div style="clear:both;height: 30px;"></div> <div id="0kcwqoc" class="f-wrap"> <div id="u000ekk" class="footer" style="width: 900px;"> <div id="ia0sa00" class="footer-a"> <p>常州永耀環(huán)?？萍加邢薰?br>聯(lián)系：陳文炳<br>手機：13861221165<br>郵箱：1532964911@qq.com<br>傳真：0519-83811165<br>網(wǎng)址：www.valueof.cn<br>地址：常州市新北區春江鎮勝利路25號<br></p> </div> <div id="gk0a00i" 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