Sumer (Beijing) International Trading Co., Ltd.
professional in coffin handles ,hardware and furniture handles
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Main information:
Product name:ZAMAK COFFIN SCREW CAP
Referenced name: Cache vis, Screw cover
Model: D001
Brand: B&R
Application: Coffin decoration
Origin: China
Manufacturer: Sumer International (Beijing) Trading Co.,Ltd
Product detail:
Diameter: 2 cm
Material: Zamak (Zinc alloy)
Color: Gold, Silver or Bronze (Optional)
Attached on coffin by screw
MOQ:3000 pcs
Packing: Carton
Main feature:
Professionally engaged in funeral field over 10 years;
Customized products acceptable;
Good quality and competitive price;
More Information:
Zamak
It is Made from pure Zinc Alloy so it is rust free and provides long life.
Zamak (formerly trademarked as ZAMAK and also known as Zamac) is a family of alloys with a base metal of zinc and alloying elements of aluminium, magnesium, and copper.
Zamak alloys are part of the zinc aluminium alloy family; they are distinguished from the other ZA alloys because of their constant 4% aluminium composition.
The name zamak is an acronym of the German names for the metals of which the alloys are composed: Zink (zinc), Aluminium, Magnesium and Kupfer (copper).The New Jersey Zinc Company developed zamak alloys in 1929. Zinc alloys are popularly referred to as pot metal or white metal. While zamak is held to higher industrial standards, it is still considered a pot metal.
The most common zamak alloy is zamak 3. Besides that, zamak 2, zamak 5 and zamak 7 are also commercially used.[2] These alloys are most commonly die cast.Zamak alloys (particularly #3 and #5) are frequently used in the spin casting industry.
A large problem with early zinc die casting materials was zinc pest, owing to impurities in the alloys.[Zamak avoided this by the use of 99.99% pure zinc metal, produced by New Jersey Zinc's use of a refluxer as part of the smelting process.
Zamak can be electroplated, wet painted, and chromate conversion coated well.
In the early 1930s Morris Ashby in Britain had licensed the New Jersey zamak alloy. The high-purity refluxer zinc was not available in Britain and so they acquired the right to manufacture the alloy using a locally available electrolytically refined zinc of 99.95% purity. This was given the name Mazak, partly to distinguish it from zamak and partly from the initials of Morris Ashby. In 1933, National Smelting licensed the refluxer patent with the intent of using it to produce 99.99% zinc in their plant at Avonmouth.
The Short European Designation code breaks down as follows (using ZL0430 as the example):
Z is the material (Z=Zinc)
P is the use (P=Pressure die casting (casting), L=Ingot)
04 is the percent aluminium (04= 4% aluminium)
3 is the percent copper (3= 3% copper)
Zamak 4 properties
| Property | Metric value | Imperial value |
| Mechanical properties | ||
| Ultimate tensile strength | 317 MPa | 46,000 psi |
| Yield strength (0.2% offset) | 221—269 MPa | 32,000—39,000 psi |
| Impact strength | 61 J (7 J aged) | 45 ft-lbf (5 ft-lbf aged) |
| Elongation | 7% | |
| Shear strength | 214—262 MPa | 31,000—38,000 psi |
| Compressive yield strength | 414—600 MPa | 60,000—87,000 psi |
| Fatigue strength (rotary bending 5x108 cycles) | 48—57 MPa | 7,000—8,300 psi |
| Hardness | 91 Brinell | |
| Physical properties | ||
| Solidification range (melting range) | 380—386 °C | 716—727 °F |
| Density | 6.6 g/cm3 | 0.24 lb/in3 |
| Coefficient of thermal expansion | 27.4 μm/m-°C | 15.2 μin/in-°F |
| Thermal conductivity | 108.9—113.0 W/m-K @ 100 °C | 755.6—784.0 BTU-in/hr-ft2-°F @ 212 °F |
| Electrical conductivity | 26-27% IACS | |
| Specific heat capacity | 418.7 J/kg-°C | 0.100 BTU/lb-°F |
More Picture:
Back of D001 screw cap gold color
Different screw caps
Cache-vis
