Categories | Metal Coffin Handles |
---|---|
Brand Name: | B&R |
Model Number: | H029 |
Place of Origin: | China |
MOQ: | 1000pcs |
Price: | US $ 1.5 - 2 / Piece |
Supply Ability: | 10000 Piece/Pieces per Month |
Delivery Time: | 30 days |
Packaging Details: | 1pcs per pp bag; 4pcs per box; 12boxes per carton |
Certification: | BV or SGS |
Material: | Zamak |
Size: | 19.5*8.5cm |
Screw distance: | 14cm |
Color: | Bronze |
More color: | Gold,Silver,bronze,old bronze |
Main information:
Product name:ZAMAK COFFIN HANDLE
Model: H029
Brand: B&R
Application: European style coffin
Origin: China
Manufacturer: Sumer International (Beijing) Trading Co.,Ltd
Product detail:
Size: 19.5*8.5 cm
Material: Zamak (Zinc alloy)
Color: Gold, Silver or Bronze (Optional)
Attached on coffin by bolt
MOQ:1000 pcs
Main feature:
Professionally engaged in funeral field over 10 years;
Customized products acceptable;
Good quality and competitive price;
More Information:
Zamak
Zinc
This article is about the metallic element. For other uses, see
Zinc (disambiguation).
Zinc is a chemical element with the symbol Zn and atomic number 30.
It is the first element in group 12 of the periodic table. In some
respects zinc is chemically similar to magnesium: both elements
exhibit only one normal oxidation state (+2), and the Zn2+ and Mg2+
ions are of similar size. Zinc is the 24th most abundant element in
Earth's crust and has five stable isotopes. The most common zinc
ore is sphalerite (zinc blende), a zinc sulfide mineral. The
largest workable lodes are in Australia, Asia, and the United
States. Zinc is refined by froth flotation of the ore, roasting,
and final extraction using electricity(electrowinning).
Brass, an alloy of copper and zinc in various proportions, was used
as early as the third millennium BC in the Aegean, Iraq, theUnited
Arab Emirates, Kalmykia, Turkmenistan and Georgia, and the second
millennium BC in West India, Uzbekistan, Iran, Syria, Iraq, and
Israel (Judea). Zinc metal was not produced on a large scale until
the 12th century in India and was unknown to Europe until the end
of the 16th century. The mines of Rajasthan have given definite
evidence of zinc production going back to the 6th century BC. To
date, the oldest evidence of pure zinc comes from Zawar, in
Rajasthan, as early as the 9th century AD when a distillation
process was employed to make pure zinc. Alchemists burned zinc in
air to form what they called "philosopher's wool" or "white snow".
The element was probably named by the alchemist Paracelsus after
the German word Zinke (prong, tooth). German chemist Andreas
Sigismund Marggraf is credited with discovering pure metallic zinc
in 1746. Work by Luigi Galvani and Alessandro Volta uncovered the
electrochemical properties of zinc by 1800. Corrosion-resistant
zinc plating of iron (hot-dip galvanizing) is the major application
for zinc. Other applications are in electrical batteries, small
non-structural castings, and alloys such as brass. A variety of
zinc compounds are commonly used, such as zinc carbonate and zinc
gluconate (as dietary supplements), zinc chloride(in deodorants),
zinc pyrithione (anti-dandruff shampoos), zinc sulfide (in
luminescent paints), and zinc methyl or zinc diethylin the organic
laboratory.
Zinc is an essential mineral perceived by the public today as being
of "exceptional biologic and public health importance", especially
regarding prenatal and postnatal development. Zinc deficiency
affects about two billion people in the developing world and is
associated with many diseases. In children, deficiency causes
growth retardation, delayed sexual maturation, infection
susceptibility, and diarrhea. Enzymes with a zinc atom in the
reactive center are widespread in biochemistry, such as alcohol
dehydrogenase in humans. Consumption of excess zinc can cause
ataxia, lethargy and copper deficiency.
Characteristics
Physical properties
Zinc is a bluish-white, lustrous, diamagnetic metal, though most
common commercial grades of the metal have a dull finish.It is
somewhat less dense than iron and has a hexagonal crystal
structure, with a distorted form of hexagonal close packing, in
which each atom has six nearest neighbors (at 265.9 pm) in its own
plane and six others at a greater distance of 290.6 pm. The metal
is hard and brittle at most temperatures but becomes malleable
between 100 and 150 °C. Above 210 °C, the metal becomes brittle
again and can be pulverized by beating. Zinc is a fair conductor of
electricity. For a metal, zinc has relatively low melting (419.5
°C) and boiling points (907 °C). The melting point is the lowest of
all the transition metalsaside from mercury and cadmium.
Many alloys contain zinc, including brass. Other metals long known
to form binary alloys with zinc are aluminium, antimony,bismuth,
gold, iron, lead, mercury, silver, tin, magnesium, cobalt, nickel,
tellurium, and sodium. Although neither zinc norzirconium are
ferromagnetic, their alloy ZrZn
2 exhibits ferromagnetism below 35 K.
A bar of zinc generates a characteristic sound when bent, similar
to tin cry.
Zinc in the periodic table | |
Atomic number (Z) | 30 |
Group, block | group 12, d-block |
Period | period 4 |
Element category | transition metal, alternatively considered a post-transition metal |
Standard atomic weight (±) (Ar) | 65.38(2) |
Electron configuration | [Ar] 3d10 4s2 |
Electrons per shell | 2, 8, 18, 2 |
More Picture:
H029 gold color zamak coffin handle
H029 coffin handle back
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