Brass
MS58, MS63, pods and chips – and the delimitation to gunmetal, which decides on the price.
Brass is not a material, but a family. The most common alloy is called CuZn39Pb3, in trade MS58: automatic brass with a small lead content, which ensures that the chip breaks when turning instead of tearing. MS63 comes with around 63 percent copper as sheet metal, thermoforming and punching part. Hull brass is about 70 percent copper above it, because it has to be cold-formed several stages. Tombak, brass with more than 80 percent copper, looks reddish and has fittings, decorative parts and wind instruments — the most common reason why brass is considered to be cast red.
Why fine goods are worse than massive, explains a look at two temperatures: Zinc boiling at 907 degrees, copper melting only at 1,085. Zinc evaporates when remelting, and more from chips with their large surface than from a fitting body.
Brass scrap is mostly not going to a copper hut, but to pressing plants that draw rods and profiles from it again. They need a predictable analysis and pay for not having to re-sort.
Why is brass 63 rated higher than brass 58?
Because of the copper content. Brass is a copper-zinc alloy: MS58 is about 58 percent copper and contains lead as automatic brass, MS63 is around 63 percent. Both shares are listed on the London Metal Exchange, and copper is significantly higher than zinc — each percentage of copper increases its value. This is why the Brass several grades.
How can I see if a chrome-plated brass fitting is?
File or scratch at a hidden place: Under the chrome layer yellow metal appears in brass, silvery grey in chromed steel. The magnet decides with — brass is not magnetic, steel adheres. Weight and sound help us: Brass sounds bright when hit and is heavy in the hand, zinc die-cast sounds dull and breaks brittle.
Why do brass chips bring less than massive brass parts?
Because chips are all the same: cool emulsion and drill oil weigh with, fine chips oxidise more, and steel chips often end up in the same container from the next machine — a magnet through the box shows this in seconds. When melting, fine goods lose more than massive pieces. Dried and varietal chips stand better.
Is it worth collecting brass sleeves, chips and fittings separately?
Yeah. As a mixed item in a bucket, the delivery is valued according to the weakest proportion, each grade gets its own set separately. For this purpose, each grade has a quantity scale from which we pay more — more of the same brass brings twice. Three buckets cost nothing. We accept small quantities in Ludwigshafen without an appointment, larger quantities come Germany-wide by parcel or collection.
Do you buy brass cartridge sleeves?
Yes, as brass sleeves — from the shooting level as well as from a estate. They must be shot down and completely empty; sharp ammunition is not scrap metal and remains outside. Steel sleeves are not part of this, the magnet separates them in a passageway. You better sort out bullets with lead core and plastic plugs from shotgun cartridges before.
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