 |
KERAMIT
970 |
|
|
| PFM ALLOYS |
| |
|
Chemical composition |
| Au |
Pt |
Pd |
Ag |
In |
Zn |
Fe |
Ir |
Au&PGM |
| 84.5% |
7.0% |
4.9% |
1.0% |
1.8% |
X |
X |
X |
96.7% |
|
X=<1,0%
|
| Technical
data: |
|
Density
g/cm³ |
18.0 |
Yield strength MPa |
470 – 650 |
|
Melting range °C |
1090-1220 |
Elongation % |
14 – 8 |
|
Casting temperature°C |
1370 |
Tensile strength MPa |
620 – 730 |
|
TEC 25-500°C-25-600°C 10-6K-1 |
14.1–14.4 |
Vickers hardness HV5/30 |
180–205-225 |
|
Modulus of elasticity GPa |
94 |
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
= 137 mV |
Ep = 805 mV |
I300
= 0.25µA◦cm-² |
Ip = 8.03µA◦cm-² |
|
| The high
value of the breakdown potential (Ep 805 mV) with
the low current density at 300 mV (I300
= 0.25µA◦cm-²) indicate the excellent
corrosion resistance of this alloy. |
| Cytotoxicity
testing |
| Cytotoxicity
of KERAMIT 970 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 single crowns,
one surface inlays, crown and short bridges
(PFM)
|
| :: |
Compatible with all traditional
ceramics |
| :: |
Excellent reaction of
the gingival tissue
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