New Guy
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Been scrapping out a derelict storage trailer that came from a cell tower site. My friends family was in the business of erecting and dismantling tower sites for several years and retired.
These im told are high grade brass cell cable fittings. My scrap yard is paying me yellow brass prices. Im wondering if there is that much of a difference or if all high grade brass is considered the same?
Last edited by Tokin; 10-24-2017 at 11:20 AM. Reason: life sucks, buy a helmet...
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I would look further into this some white brass has a good amount of nickel https://www.finishing.com/275/88.shtml This would be somewhat magnetic I would think due to the nickel...
Could also be White Bronze, plating for RF connectors offers many advantages over Nickel or Silver plated connectors.
Improved electrical and intermodulation performance, better wear characteristics in harsh conditions
and low insertion loss compared to Nickel are just a few. Although Silver has been the preferred finish
with outstanding electrical characteristics, it pales in comparison to white bronze mostly due to the
corrosive and the tarnish effects of Silver oxide.
Composition
White Bronze is composed of Copper, Tin and Zinc. The deposited amounts of each vary in the order of
about 55-60% Copper, 20-25% Tin and 15-20% Zinc.
The end result is an aesthetic finish similar to stainless steel.
Advantages of White Bronze
• Low intermodulation products (more on IMD and IMP in another article)2
• High corrosion resistance
• Low porosity
• Low RF losses
• Non magnetic
• Wear and scratch resistant
Last edited by hobo finds; 10-24-2017 at 11:39 AM.
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Wow! Too bad about having to sort all that brass! Welcome to the forum.Originally Posted by Tokin
Been scrapping out a derelict storage trailer that came from a cell tower site. My friends family was in the business of erecting and dismantling tower sites for several years and retired.
These im told are high grade brass cell cable fittings. My scrap yard is paying me yellow brass prices. Im wondering if there is that much of a difference or if all high grade brass is considered the same?
Hobo, I have a question for you, maybe you know, maybe you don't. I have heard that nickel is magnetic. I have also heard that Nickels are 95% nickel. I have tried to get some kind of magnetic response from a nickel using a rare earth magnet and I get nothing. I think I get more of a magnetic response from a silver coin. Waddupwidiss?
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US Nickels 75% Copper 25% Nickel except the silver % war nickels 1943 -1945 with the large mint mark on the back. Find a Canadian Nickel .999 % Nickel pre 1982 that is.
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Hopefully alloy2 will respond as to what he thinks these are!
New Guy
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If I scratch the surface its yellow brass underneath.
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I have doubts it's silver due to oxidation from storage it would have tarnished at least a little by now. If you xrf the connector, the coating may be thick enough it will probably come back as PdNi With a 3-4% gold content (on the surface...not the part by weight) The reason I think its a palladium alloy coating is that's common use in satcom and cellular transceivers out in the weather. It also seems to be more durable than gold plating.
WI ITAD LLC, IT Liquidation Services, we remarket, buy and sell scrap electronics No customer too large or small!
Experienced scrapper
I think an alloy 2 post re: diamagnetic could help. I don't know the answer.
New Guy
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Im curious, what are the main material rf connector are made of? I bought a lot of rf cconnectors and not for the life of me can figure out what is the material they are made of. they are non magnetic and manufactured by rosenberger and macom
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Brass fittings and nickel plated plug endsThere are currently 1 users browsing this thread. (0 members and 1 guests)
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