 |
KERAMIT
750 SF |
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| PFM ALLOYS |
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|
Chemical composition |
| Au |
Pd |
Ag |
Cu |
In |
Zn |
Sn |
Ir |
Au&PGM |
| 75.1% |
18.9% |
1.0% |
X |
2.0% |
x |
2.0% |
x |
94.0%
|
|
X=<1,0%
|
| Technical
data: |
|
Density
g/cm³ |
16.2 |
Yield strength MPa |
330 – 600 |
|
Melting range °C |
1120-1240 |
Elongation % |
20 – 12 |
|
Casting temperature°C |
1390 |
Tensile strength MPa |
610 - 750 |
|
TEC 25-500°C-25-600°C 10-6K-1 |
13.8–14.0 |
Vickers hardness HV5/30 |
210-230-255 |
|
Modulus of elasticity GPa |
121 |
Crucible |
ceramic |
|
| Solders |
| Pre-solder: |
PRIM SOLDER X (1105°C) |
| Post-solder: |
SOLDER K10/5 (750°C) Z - SOLDER LFC
(650°C) |
|
| Corrosion
resistance |
The electrochemical properties of this alloy were
evaluated in an electrochemical cell built according
to standards defined in ISO 10271.
The following results were obtained: |
| Eocp
= 108 mV |
Ep = 890 mV |
I300
= 0.19µA◦cm-² |
Ip = 10.05µA◦cm-² |
|
| The high
value of the breakdown potential (Ep 890 mV) with
the low current density at 300 mV (I300
= 0.19µA◦cm-²) indicate the excellent
corrosion resistance of this alloy. |
| Cytotoxicity
testing |
| Cytotoxicity
of KERAMIT 750 SF alloy has been evaluated according
to ISO 10993-5 standard, using the L-929 (mouse
fibroblasts) cell line. |
| Results
have confirmed the perfect cytocompatibility of
this alloy. Cells behaviour and function were definitely
similar to those measured in tests involving pure
gold, that is the paradigmatic non-toxic material. |
| International
standards: |
| ISO9693:1999;
ISO10271:2001; ISO10993-5:1999 |
| Specific
properties |
| :: |
PFM alloy, yellow
colour, |
| :: |
Micro Grain structure:
high casting precision
|
| :: |
Ideal
for crowns, onlays, MO, short bridges and
millings |
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