BeCu ribbon Alternate
BeCu ribbon Alternate
(OP)
We use a BeCu ribbon in one of our loudspeakers. It is under constant vibration/movement and we therefore need the constant flexibility (elasticity?) property of this material. Does anyone know of an alternate material that will withstand constant movement and heat up to 80 deg c without deteriorating? I have been told that Tellurium copper may be suitable. Any ideas on this matter is welcome.
Regards
Regards





RE: BeCu ribbon Alternate
Its conductivity is ~4% IACS. About 7times greater than 17-7 steel. (I dont work w/ BeCu so I dont have values handy.)
Nick
(I'm an Live audio engineer in my spare time, what driver is this and do you need prototypes tested?) (that last bit was a sort of joke)
RE: BeCu ribbon Alternate
Regards
RE: BeCu ribbon Alternate
Tellurium Copper is a free machining alloy for fasteners, not for above usage.
http://www.welding-advisers.com/
RE: BeCu ribbon Alternate
The writing is on the wall. Eventually, it will be banned in Europe.
Regards
RE: BeCu ribbon Alternate
www.elgiloy.com
RE: BeCu ribbon Alternate
RE: BeCu ribbon Alternate
Conductivity/resistivity
Thermal expansion
Thermal conductivity
Strength
Modulus (stiffness)
Fatigue strength
Put these in order and then we can hunt for an alternate.
Be is quite harmless, unless you inhale dust.
I agree Nick, BeNi is an amazing material. It is almost impossible to thermal fatigue it.
= = = = = = = = = = = = = = = = = = = =
Corrosion never sleeps, but it can be managed.
http://www.trenttube.com/Trent/tech_form.htm
RE: BeCu ribbon Alternate
RE: BeCu ribbon Alternate
Inconel X-750, Elgilloy and MP35N are excellent spring materials that are virtually fatigue proof especially the latter two, but they are not terribly conductive. they are also non-magnetic. Is conductivity a concern?
RE: BeCu ribbon Alternate
Titanium has similar elastic modulus and stress characteristics to beryllium copper, although the mass is very different. Is that what you are after? Beryllium copper is only about 2% beryllium.
I did a quick web search on beryllium and banning, and I did not see anything absolutely explicit about BeCu. How likely do people thing this is?
JHG
RE: BeCu ribbon Alternate
Depending on the Yield Strength requirements, there are several bronze and Cu/Ni/Si alloys that are being utilized.
Most copper alloys used in spring and connector applications can withstand Stress relaxation under 100 degC.
check out www.avins.com