Active Member
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[China]
Address: Rm 704, Building 2, No.3, Leading tower, Guangqumen Nei,Dongchen District, Beijing, China
Contact name:Helen Ren
Sumer (Beijing) International Trading Co., Ltd. |
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Main information:
Product name:ZAMAK COFFIN HANDLE
Model: H022
Brand: B&R
Application: European style coffin
Origin: China
Manufacturer: Sumer International (Beijing) Trading Co.,Ltd
Product detail:
Size:20.5*11.5 cm
Material: Zamak (Zinc alloy)
Color: Gold, Silver or Bronze (Optional)
Attached on coffin by screw
MOQ:1000 pcs
Main feature:
Professionally engaged in funeral field over 10 years;
Customized products acceptable;
Good quality and competitive price;
More Information:
Zamak
History of Zinc
Centuries before zinc was discovered in the metallic form, its ores
were used for making brass and zinc compounds for medicinal
purposes. Zinc compounds were in the ores smelted certainly as
early as 200 B.C. to obtain copper and which gave alloys of copper
and zinc – the brass family. The Romans certainly were major users
of brass. The Greeks also appeared to know zinc, even if not by
name.
An ancient idol, containing 87.5% zinc, found in prehistoric ruins
in Transylvania in Eastern Europe is the oldest known zinc object.
Zinc filled silver bracelets dating back to 500 B.C. have been
found on the island of Rhodes, and the Romans used a zinc alloy to
fabricate coins.
Some credit India with developing the first knowledge of true zinc
smelting while others attribute its discovery to the Chinese. The
production of metallic zinc occurred much later than other common
metals. Copper was smelted from its ores around 5000 B.C., lead
about 4000 B.C. and iron about 2000 B.C., while zinc appears to
have become available on a commercial scale in the 14th century
A.D.
In Europe, zinc probably became first known through its import from
India and China. Zinc was recognized in Europe as a separate metal
in the 16th century when Agricola (1490 – 1555) and Paracelsus
(1493 – 1541) wrote of a metal called “zincum.”
Commercial smelting of zinc began in Europe in the middle of the
18th century when the first European zinc smelter was established
in Bristol in the United Kingdom using a vertical retort procedure.
But the real advent of modern techniques dates from the
introduction of the horizontal retort process in the early 19th
century. In 1836 hot-dip galvanizing – the oldest anti-corrosion
process – was introduced in France. Zinc smelting in the United
States started in 1850s.
strictly controlled.
Zamak 7 composition per standard
| Alloying elements | Impurities | |||||||||||
| Standard | Limit | Al | Cu† | Mg | Pb | Cd | Sn | Fe | Ni‡ | Si | In | Tl |
| ASTM B240 (Ingot) | min | 3.9 | - | 0.01 | - | - | - | - | - | - | - | - |
| max | 4.3 | 0.1 | 0.02 | 0.002 | 0.002 | 0.001 | 0.075 | - | - | - | - | |
| ASTM B86 (Cast) | min | 3.5 | - | 0.005 | - | - | - | - | 0.005 | - | - | - |
| max | 4.3 | 0.25 | 0.02 | 0.003 | 0.002 | 0.001 | 0.075 | 0.02 | - | - | - | |
| GB8738-88 | min | 3.9 | - | 0.01 | - | - | - | - | 0.005 | - | - | - |
| max | 4.3 | 0.1 | 0.02 | 0.002 | 0.002 | 0.001 | 0.075 | 0.02 | - | - | - | |
| †Impurity ‡Alloying element | ||||||||||||
Zamak 7 properties
| Property | Metric value | Imperial value |
| Mechanical properties | ||
| Ultimate tensile strength | 285 MPa | 41,300 psi |
| Yield strength (0.2% offset) | 285 MPa | 41,300 psi |
| Impact strength | 58.0 J | 42.8 ft-lbf |
| Elongation at fracture | 14% | |
| Shear strength | 214 MPa | 31,000 psi |
| Compressive yield strength | 414 MPa | 60,000 psi |
| Fatigue strength (reverse bending 5x108 cycles) | 47.0 MPa | 6,820 psi |
| Hardness | 80 Brinell | |
| Physical properties | ||
| Solidification range (melting range) | 381—387 °C | 718—729 °F |
| Coefficient of thermal expansion | 27.4 μm/m-°C | 15.2 μin/in-°F |
| Thermal conductivity | 113 W/m-K | 784 BTU-in/hr-ft2-°F |
| Electrical resistivity | 6.4 μΩ-cm | 2.5 μΩ-in |
| Specific heat capacity | 419 J/kg-°C | 0.100 BTU/lb-°F |
| Casting temperature | 395—425 °C | 743—797 °F |
More Picture:
H022 zamak bronze handle back
Gold color H022 coffin handle
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