|
not gold. Likely a heavy-tin bronze.
Copper is most common. Sometimes Silveride which is any alloy of Silver that has Silver as the highest single metal. (Old antiques and coinage term).
The arm housing and casing is almost always aluminium. the bolt and pin are normally stainless steel. (peramagnetic high 400 series).
the ride strips ("wire" that connect to the tips can be any number of metals and there's too many options for boardsort to make any listing on it. steel alloys are the most common but I've found silver and nickel. Even gold in really old 8" hard drives, tin in most 5.25 inch drives.
as for the first photo.
the gold flashing wire on the right/centre are gold contact points. you could trim it and put it in high peripheral but it's rather pointless. I don't cut them off any more. the connector on the right. the flashing like most wire and thin board flashing is almost non-measurable. it's literally gold paint. and even less gold than the hardware store gold flake paint.
the plastic connector; the pins on the other hand make things different.
These: gold pins= low peripheral with no aluminium back. gold pin connector with aluminium back and otherwise midgrade.
(last set of three classes is my best experienced guess on breaking up the classes to the new system now, I'm close if not correct).
_________________
42 6F 61 72 64 73 6F 72 74 2E 63 6F 6D
|
Login
Register
E-scrap Prices
