Kera C CoCr Metal-Ceramic Alloy – Universal Non-Precious Metal Alloy
Item no. 1004004
€269.00
incl. 19% VAT · €226.05 excl. VAT · plus shipping
Kera C CoCr metal-ceramic alloy – universal non-precious metal alloy for crowns, bridges, telescopic work and PFM technique. Nickel-free, biocompatible, DIN EN ISO 22674 Type 5. 1 kg pack.
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Description
Kera C CoCr Metal-Ceramic Alloy – Universal Non-Precious Metal Alloy
Kera C CoCr metal-ceramic alloy is a high-quality non-precious metal alloy for universal requirements in modern dental technology. It is ideally suited to ceramic-veneered crowns and bridges, telescopic crowns, combination work and attachment work. The alloy impresses with its excellent workability and delivers reliable results in everyday laboratory work.
Composition of the Kera C non-precious metal alloy
Typical values according to the manufacturer's instructions for use:
| Cobalt (Co) | approx. 60 % – base element for strength and rigidity |
|---|---|
| Chromium (Cr) | approx. 24.5 % – ensures corrosion resistance and hardness |
| Tungsten (W) | approx. 9 % – increases mechanical load-bearing capacity |
| Niobium (Nb) | approx. 2 % |
| Vanadium (V) | approx. 2 % |
| Molybdenum (Mo) | approx. 1.1 % |
| Silicon and iron (Si, Fe) | together max. 1 % |
The Kera C alloy is nickel-free, beryllium-free and cadmium-free and thus meets the highest biocompatibility standards.
Technical data
| 0.2 % proof stress (Rp0.2) | 575 MPa |
|---|---|
| Tensile strength | 700 MPa |
| Elongation at fracture | 6 % |
| Modulus of elasticity | 210 GPa |
| Hardness | 350 HV 10/30 |
| Density | 8.4 g/cm³ |
| Casting temperature | max. 1,485 °C |
| CTE (25–500 °C) | 14.1 × 10⁻⁶ K⁻¹ |
| Dimensions | Ø 8 x 15 mm |
| Type | DIN EN ISO 22674, Type 5 |
Indications
- Ceramic-veneered crowns and bridges (PFM technique)
- Telescopic crowns and double crowns
- Combination work and attachment work
Advantages of the Kera C metal-ceramic alloy
| Universally applicable | One alloy for virtually all fixed and combined work |
|---|---|
| High strength | 700 MPa tensile strength for long-lasting restorations |
| Optimum CTE value | 14.1 – compatible with common veneering ceramics |
| Biocompatible | Free from nickel, beryllium and cadmium |
| Good workability | Pleasant grinding and polishing behaviour, comparable to high-gold alloys |
| Manufacturer | Eisenbacher Dentalwaren ED GmbH |
Notes on use
For professional use in dental technology only. Processing is carried out in accordance with the manufacturer's instructions. Use suitable phosphate-bonded investment materials and vacuum pressure casting machines for CoCr alloys. The maximum casting temperature is 1,485 °C, the final preheating temperature of the investment ring approx. 850–900 °C. An oxide firing is not mandatory; optionally 5 minutes at 980 °C under vacuum (cleaning firing).
Frequently asked questions (FAQ)
Which ceramics are compatible with Kera C?
Kera C is compatible with all common veneering ceramics for NPM alloys that require a CTE value of approx. 13.8–14.3 × 10⁻⁶ K⁻¹.
Can I also use Kera C for telescopic work?
Yes, thanks to its high hardness (350 HV) and strength, Kera C is ideally suited to telescopic and double-crown technique.
How does Kera C differ from Keragen?
Kera C has a higher hardness (350 vs. 285 HV) and tensile strength (700 vs. 550 MPa) and is therefore particularly suitable for highly stressed frameworks. Keragen offers higher elongation at fracture (14 %) and is easier to process.
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Technical data
| Composition | Co 60, Cr 24.5, W 9, Nb 2, V 2, Mo 1.1, Si 0.9, Fe 0.15, other < 0.1 |
|---|---|
| 0.2 % proof stress (Rp0.2) | 575 MPa |
| Percentage elongation at fracture | 6 % |
| Modulus of elasticity | 210 GPa |
| Tensile strength | 700 MPa |
| Density | 8.4 g/cm³ |
| Casting temperature | max. 1485 °C |
| CTE (25-500°C) | 14.1 |
| Hardness (HV 10/30) | 350 |
| Dimensions | Ø 8 x 15 mm |
| Type DIN EN ISO 22674 | > Type 5 in as-delivered condition |
Downloads
- Eisenbacher cobalt alloys – Safety data sheetSafety data sheet · PDF, 183 KB
- Kera C – Instructions for useInstructions for use · PDF, 1.6 MB
Manufacturer & product safety
Manufacturer: Eisenbacher Dentalwaren ED GmbH, Dr.-Konrad-Wiegand-Straße 9, 63939 Wörth am Main, Deutschland, info@eisenbacher.de
Article number: 1004004
Safety information:
Metal dust is harmful to health. Use dust extraction and a respirator with FFP3 filter (DIN EN 149) when grinding and sandblasting. The dusts, fumes and smoke formed during processing: May cause allergy or asthma symptoms or breathing difficulties if inhaled (H334). May cause an allergic skin reaction (H317). May cause long lasting harmful effects to aquatic life (H413). Avoid breathing dust and fumes, wear protective gloves, wear respiratory protection in case of inadequate ventilation. Do not use in case of known allergic reactions to any of the ingredients. For adult patients only; contraindicated for children, pregnant and breastfeeding women. In exceptional cases, electrochemically induced local irritations have been reported. Galvanic effects may occur when different alloy groups are used in the patient's mouth. Any serious incident must be reported to the manufacturer and the competent authority. Observe the instructions for use and the safety data sheet (see downloads).