Mouthpiece Work / Goldbeck Metal Analysis
FROM: kwbradbury (Keith Bradbury)
SUBJECT: Goldbeck Metal Analysis
Goldbeck Sax Mouthpiece Alloy Cu 61% Zn 19% Ni 13% Pb 2% misc 5% Measured 6/28/05 via X-Ray Fluorescence Spectrophotography (XRF) Numbers are +/- a few %. The impurities must include Iron. Several I've seen have specks in them that rust. Anyone recognize this as a standard alloy?
FROM: clarbuff (dberger19@...)
SUBJECT: Re: Goldbeck Metal Analysis
Yes, to me its one of many formulations of "nickel silver" , old name "German Silver", no Ag [silver] but the Ni color dominates, I guess. Some of my old Chem-Physics handbooks list many Ni -S 's with antique names, will look. These alloys are used for clarinet et al keys, low tarnishing, machinable-bendable, capable of silver, nickel or chrome plating for enhanced appearance. A widely used alloy. Don
FROM: gatlinjoe (joe gatlin)
SUBJECT: Re: Goldbeck Metal Analysis
What is the guardala alloy made up of >From: "Keith Bradbury" <kwbradbury@...> >Reply-To: MouthpieceWork@yahoogroups.com >To: MouthpieceWork@yahoogroups.com >Subject: [MouthpieceWork] Goldbeck Metal Analysis >Date: Wed, 29 Jun 2005 16:28:39 -0000 > >Goldbeck Sax Mouthpiece Alloy > >Cu 61% >Zn 19% >Ni 13% >Pb 2% >misc 5% > >Measured 6/28/05 via >X-Ray Fluorescence Spectrophotography (XRF) > >Numbers are +/- a few %. > >The impurities must include Iron. Several I've seen have specks in >them that rust. > >Anyone recognize this as a standard alloy? > > >
FROM: kwbradbury (Keith Bradbury)
SUBJECT: Re: Goldbeck Metal Analysis
>What is the [G]uardala alloy made up of(?) You need to saw off a 1/2" long piece of the shank and send it to me. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
FROM: reedman_1 (reedman@...)
SUBJECT: Re: Goldbeck Metal Analysis
The Anchor Bronze & Metals website (www.anchorbronze.com) website shows the chemical composition of Nickel Siver Alloy CDA 974 as: Cu 59.5% Zn 16.2% Ni 16.3% Pb 5% Sn 3% Close, but too much lead and not enough zinc. Keith Bradbury writes: > Goldbeck Sax Mouthpiece Alloy > > Cu 61% > Zn 19% > Ni 13% > Pb 2% > misc 5% > > Measured 6/28/05 via > X-Ray Fluorescence Spectrophotography (XRF) > > Numbers are +/- a few %. > > The impurities must include Iron. Several I've seen have specks in > them that rust. > > Anyone recognize this as a standard alloy?
FROM: sjrosner (sjrosner)
SUBJECT: Re: Goldbeck Metal Analysis
--- In MouthpieceWork@yahoogroups.com, "Keith Bradbury" <kwbradbury@y...> wrote: > Goldbeck Sax Mouthpiece Alloy > > Cu 61% > Zn 19% > Ni 13% > Pb 2% > misc 5% > > Measured 6/28/05 via > X-Ray Fluorescence Spectrophotography (XRF) > > Numbers are +/- a few %. > > The impurities must include Iron. Several I've seen have specks in > them that rust. > > Anyone recognize this as a standard alloy? This is an alloy commonly known as "Nickel Silver" (yes, contrary to popular belief, there is no Ag(silver) in nickel silver...it is about the color). Without more accuracy, it is difficult to call the specific alloy, but it is from the C74x00,C75x00, or C77x00 family. These are generally specified in the range: Cu 55-65% Ni 10-18% Zn 17-27% The Pb is added to improve the machinability...Fe, Mn, and Co are also added to improve generally ductility in some cases. These alloys are used for precision hardware and fasteners, dental and surgical instruments...C75200 is used for slide tubing in high-end brass instruments. Steinway uses these alloys in pianos for bridge pins. I think that the Keilwerth nickel-silver saxophones are made from an alloy in this class of materials. jeff