Main information:
Product name:Brass decoration (flower)
Model: BD032
Brand: B&R
Application: Decoration for Tombstone ,cemetery or others.
Origin: China
Manufacturer: Sumer International (Beijing) Trading Co.,Ltd
Product detail:
Size: cm
Material: Brass (Copper alloy)
Color /finishing:electrophoretic paint
MOQ:500-1,000 pcs
Packing: Carton
Main feature:
Professionally engaged in funeral field over 10 years;
Customized products acceptable;
Good quality and competitive price;
More information:
Brass
Brass is a metal alloy made of copper and zinc; the proportions of
zinc and copper can be varied to create a range of brasses with
varying properties. It is a substitutional alloy: atoms of the two
constituents may replace each other within the same crystal
structure.
Isotopes
Main article: Isotopes of copper
There are 29 isotopes of copper. 63Cu and 65Cu are stable, with
63Cu comprising approximately 69% of naturally occurring copper;
both have a spin of 3⁄2.The other isotopes are radioactive, with
the most stable being 67Cu with a half-life of 61.83 hours.Seven
metastable isotopes have been characterized; 68mCu is the
longest-lived with a half-life of 3.8 minutes. Isotopes with a mass
number above 64 decay by β−, whereas those with a mass number below
64 decay by β+. 64Cu, which has a half-life of 12.7 hours, decays
both ways.
62Cu and 64Cu have significant applications. 62Cu is used in
62Cu-PTSM as a radioactive tracer for positron emission tomography.
Properties
Brass has higher malleability than bronze or zinc. The relatively
low melting point of brass (900 to 940 °C, 1,650 to 1,720 °F,
depending on composition) and its flow characteristics make it a
relatively easy material to cast. By varying the proportions of
copper and zinc, the properties of the brass can be changed,
allowing hard and soft brasses. The density of brass is 8.4 to 8.73
grams per cubic centimetre (0.303 to 0.315 lb/cu in).
The softness of copper partly explains its high electrical
conductivity (59.6×106 S/m) and high thermal conductivity, second
highest (second only to silver) among pure metals at room
temperature.This is because the resistivity to electron transport
in metals at room temperature originates primarily from scattering
of electrons on thermal vibrations of the lattice, which are
relatively weak in a soft metal.The maximum permissible current
density of copper in open air is approximately 3.1×106 A/m2 of
cross-sectional area, above which it begins to heat excessively.
More Picture:
Brass decorations
Cu
Brass could be made by different products
Brass bar
