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Certifications
2002
1
- 2
- 3 |
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GENERAL PROPERTIES
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| PHYSICAL |
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SIZIN
8 |
SIZIN
12 |
SIZIN
27 |
| |
| Density |
Kg/dm3 |
6,3 |
6,0 |
5,0 |
| Melting range |
°C |
375÷404 |
380÷432 |
375÷484 |
| Specific heat capacity |
J/Kg°K |
435 |
450 |
525 |
| Thermal conductivity at 20°C |
W/m°K |
115 |
116 |
125,5 |
| Resistivity at 20°C |
x10-8Ωm |
6,2 |
6,1 |
5,8 |
Optimum casting range
under pressure |
°C |
420÷440 |
465÷520 |
540÷580 |
| Optimum sand casting range |
°C |
- |
460÷582 |
540÷580 |
| Thermal linear expansion |
cm/cmx10-6/°C |
23,2 |
24,1 |
26 |
| Linear shrinkage |
% |
1,1 |
1,25 |
1,3 |
| Dimensional stability at 20°C |
cm/cm/anno |
- |
0,00013 |
0,02 dopo2anni |
| Electrical conductivity at 20°C |
Ms/m |
16,1 |
16,4 |
17,2 |
Mould temperature
for pressure die-casting |
°C |
200 |
200 |
200 |
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| CHEMICAL (test%) - EN 1774 |
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SIZIN
8 |
SIZIN
12 |
SIZIN
27 |
| |
| Aluminium |
|
8,2÷8,8 |
10,8÷11,5 |
25,5÷28,0 |
| Copper |
|
0,9÷1,3 |
0,5÷1,2 |
2,0÷2,5 |
| Magnesium |
|
0,02÷0,03 |
0,02÷0,03 |
0,012÷0,02 |
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|
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| Impurities: |
Lead |
max 0,005 |
max 0,005 |
max 0,005 |
|
Cadmium |
max 0,005 |
max 0,005 |
max 0,005 |
|
Tin |
max 0,002 |
max 0,001 |
max 0,002 |
|
Iron |
max 0,035 |
max 0,05 |
max 0,07 |
|
Nickel |
max 0,001 |
- |
- |
|
Silicon |
max 0,035 |
max 0,05 |
max 0,07 |
| Tot. impurities: |
Cd+Pb+Sn |
max 0,080 |
max 0,080 |
max 0,080 |
|
Zinc |
remainder |
remainder |
remainder |
| |
| |
| MECHANICAL |
|
SIZIN
8 |
SIZIN
12 |
SIZIN
27 |
|
|
Sand
casting |
Pressure
die-casting |
Sand
casting |
Pressure
die-casting |
Sand
casting |
Pressure
die-casting |
| |
| Tensile strength |
MPa |
240÷270 |
357÷378 |
270÷310 |
385÷405 |
400÷440 |
407÷440 |
| Linear elongation (51mm) |
% |
1÷2 |
6÷10 |
3÷4 |
4÷5 |
3÷6 |
1÷2 |
| Brinell hardness (500 kg) |
HB |
80÷90 |
100÷106 |
92÷96 |
95÷115 |
110÷120 |
110÷120 |
| Yield strength (0,2%) |
MPa |
195 |
270÷290 |
200 |
300÷320 |
370 |
350÷370 |
| Tensile strength at
compression (0,1%) |
MPa |
- |
250 |
- |
260 |
330 |
330 |
| Impact energy |
J |
20 |
32÷48 |
23÷27 |
20÷37 |
31÷54 |
9÷16 |
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ALLOYS FOR HOT DEE GALVANIZING
Among zinc-aluminium alloys, Simar produces two alloys for hot
deep galvanizing SIZIN 5 and SIZIN 10 with the following chemical
compositions:
| |
| CHEMICAL (test%) |
|
SIZIN
5 |
SIZIN
10 |
| |
| Aluminium |
|
4,6÷5 |
9,6÷10 |
| Copper |
|
max 0,002 |
max 0,002 |
| Magnesium |
|
- |
- |
|
|
|
|
| Impurities: |
Lead |
max 0,03 |
max 0,03 |
|
Cadmium |
max 0,02 |
max 0,02 |
|
Tin |
max 0,001 |
max 0,001 |
|
Iron |
max 0,02 |
max 0,02 |
| Tot. impurities: |
Cd+Pb+Sn |
- |
- |
|
Zinc |
remainder |
remainder |
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