C1020無氧銅

     不含氧也不含任何脫氧劑殘留物的純銅。但實際上還是含有非常微量氧和一些雜質(zhì)。按標(biāo)準(zhǔn)規(guī)定，氧的含量不大于0.003%，雜質(zhì)總含量不大于0.05%，銅的純度大于99.95%。根據(jù)含氧量和雜質(zhì)含量，無氧銅又分為一號和二號無氧銅。

     一號無氧銅純度達(dá)到99.97%，氧含量不大于0.003%，雜質(zhì)總含量不大于0.03%；二號無氧銅純度達(dá)到99.95%，氧含量不大于0.003%，雜質(zhì)總含量不大于0.05%。無氧銅無氫脆現(xiàn)象，導(dǎo)電率高，加工性能和焊接性能、耐蝕性能和低溫性能均好。各國對于含氧量的標(biāo)準(zhǔn)也不完全相同，存在一定的差異。OFC（無氧銅）：純度為99.995% 的金屬銅。一般用于音響器材、真空電子器件、電纜等電工電子應(yīng)用之中。其中無氧銅中又有 LC-OFC（線形結(jié)晶無氧銅或結(jié)晶無氧銅）：純度在99.995%以上和OCC（單晶無氧銅）：純度，在99.996%以上，又分為PC-OCC和UP-OCC 等。采用UP-OCC技術(shù)（Ultra Pure Copper by Ohno Continuous Casting Process）制造的單結(jié)晶無氧銅，無方向性、高純度、防腐蝕、極低的電氣阻抗使得線材適合高速優(yōu)質(zhì)的傳輸信號。
 

        Guoqi materials wholesale for physical goods into the copper ( copper, copper rods, copper wire, copper belt ), environmental brass ( brass brass band brass bar brass plate angle of six copper ), phosphor bronze ( copper belt, phosphorus copper wire, phosphorus copper ), aluminum ( aluminum bronze bronze, aluminum bronze bar ), tungsten copper alloy ( tungsten steel Yuanbang tungsten, copper plate ), bronze (bronze rod, tin bronze sheet ), zirconium copper chromium ( chromium zirconium copper, chromium zirconium copper ) complete specifications, copper casting rod, extrusion of copper rods, copper pattern specification, hollow copper pipe specifications, copper square specifications of copper, copper strip angle specifications, specifications, provide material proof SGS report, welcome to come calls to negotiate.

The copper conductive, thermal conductivity, in the atmosphere ａnd water have high corrosion resistance, ａnd has good plasticity, easy to cold ａnd hot working, easy welding, forging ａnd tin, no stress corrosion cracking tendency, good processing performance for the majority of customer cost savings, more ａnd more by the vast number of customers in favor of. Yaotai metal special introduction of advanced equipment, high technology to provide high precision material,

     　　紫銅中的微量雜質(zhì)對銅的導(dǎo)電、導(dǎo)熱性能有嚴(yán)重影響。其中鈦、磷、鐵、硅等顯著降低電導(dǎo)率,而鎘、鋅等則影響很小。氧、硫、硒、碲等在銅中的固溶度很小,可與銅生成脆性化合物,對導(dǎo)電性影響不大，但能降低加工塑性。普通紫銅在含氫或一氧化碳的還原性氣氛中加熱時，氫或一氧化碳易與晶界的氧化亞銅(Cu2O)作用，產(chǎn)生高壓水蒸氣或二氧化碳?xì)怏w，可使銅破裂。這種現(xiàn)象常稱為銅的“氫病”。氧對銅的焊接性有害。鉍或鉛與銅生成低熔點共晶，使銅產(chǎn)生熱脆；而脆性的鉍呈薄膜狀分布在晶界時，又使銅產(chǎn)生冷脆。磷能顯著降低銅的導(dǎo)電性,但可提高銅液的流動性,改善焊接性。適量的鉛、碲、硫等能改善可切削性。紫銅退火板材的室溫抗拉強度為22～25公斤力/毫米2,伸長率為45～50%，布氏硬度（HB）為35～45。 




                 進(jìn)口C1020英國BS無氧銅棒 福建廈門C1020純銅棒 C1020紫銅