SAE 67  American standard – SAE  Cu Pb15 Sn (Cu Sn7 Pb15-C), CC496K

SAE 68B  American standard – SAE  ~ SS 5716-15 (Cu Al10 Fe5 Ni5)

SAE 94, SAE 794  American standard – SAE

Cu Pb20 Sn 5 ,  (Cu Sn5 Pb20-V), CC497K

LM’s comparison list between different

norms from Copper alloys

Please read below on the wished for trade-name in the left hand column, and get it translated into LM-language on the right-hand

column. The right hand column with our name is either identical in composition or a fully replaceable alloy with only minor

differences. The column in the middle states the norm and its country of origin.

With no marks in front of LM’s alloy = alloy is identical, with this sign “~” = alloy is very similar, fully replaceable.

Product name Country of origin LM’s trade name by or order/inquiry

3A  American standard – ASTM  SS 5640-15 (Cu Pb10 Sn10), CC495K

4A  American standard – ASTM  SS 5204-15 (Cu Sn5 Pb5 Zn5), CC491K

 

電真空器件

電真空器件主要是高頻和超高頻發(fā)射管、波導(dǎo)管、磁控管等，它們需 要高純度無(wú)氧銅和彌散強(qiáng)化無(wú)氧銅。

印刷電路

銅印刷電路，是把銅箔作為表面，粘貼在作為支撐的塑料板上；用照相的辦法把電路布線圖印制在銅版上；通過(guò)浸蝕把多余的部分去掉而留下相互連接的電路。然后，在印刷線路板上與外部的連接處沖孔，把分立元件的接頭或其它部分的終端插入，焊接在這個(gè)口路上，這樣一個(gè)完整的線路便組裝完成了。如果采用浸鍍法，所有接頭的焊接可以一次完成。這樣，對(duì)于那些需要精細(xì)布置電路的場(chǎng)合，如無(wú)線電、電視機(jī)，計(jì)算機(jī)等，采用印刷電路可以節(jié)省大量布線和固定回路的勞動(dòng)；因而得到廣泛應(yīng)用，需要消費(fèi)大量的銅箔。此外，在電路的連接中還需用各種價(jià)格低廉、熔點(diǎn)低、流動(dòng)性好的銅基釬焊材料。