The Dirty Truth About Standard Heating Elements
Most dental labs don't realize their furnace problems start with impure heating elements. Conventional MoSi₂ elements contain:
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Aluminum, iron, and other metal impurities (up to 0.1% in standard "pure" elements)
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These contaminants vaporize at high temps, causing:
✖ Discolored zirconia crowns (yellow/gray tints)
✖ Inconsistent sintering results
✖ Frequent element replacement due to degradation
Our Purity Advantage: the 1800°C MoSi2 Heating Element
We reinvented MoSi₂ manufacturing to solve these problems:
1. Ultra-Clean Raw Materials
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Hand-selected high-purity molybdenum and silicon
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Rigorous impurity screening (ICP-MS tested)
2. Proprietary Production Process
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Vacuum arc melting removes gaseous impurities
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Zone refining achieves 99.9999% purity for critical applications
3. Two Grades for Every Need
| Parameter | Standard Market Elements | Our 1700-Grade | Our 1800-Grade |
|---|---|---|---|
| Purity | ≤99.9% | 99.9% | 99.999-99.9999% |
| Al/Fe Content | 500-1000 ppm | <100 ppm | <1 ppm |
4. Technical Comparison Snapshot
| Parameter | 1700-Grade MoSi₂ | 1800-Grade MoSi₂ |
|---|---|---|
| Element Temp. | 1500°C | 1700°C |
| Furnace Temp. | 1300°C | 1600°C |
| Current (A) | 150–275 | 45–120 |
| Surface Load | 14.5–15 W/cm² | 10–11.5 W/cm² |
| Resistivity (Ω) | 0.048–0.115 (U-type) | 0.186–0.398 (U-type) |
Results in Dental Applications
A Swiss dental lab switching to our 1800-grade elements reported:
✅ Zero discoloration in 500+ zirconia frameworks
✅ 30% longer element life (no impurity-driven corrosion)
✅ Repeatable sintering results (ΔE <0.5 color variation)
Why This Matters for Dentists
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Aesthetic perfection: No more grayish margins in anterior crowns
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Predictable workflows: Eliminates post-sintering color correction
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Lower cost per unit: Fewer remakes and longer-lasting elements
Technical Spotlight: How Purity Affects Performance
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Thermal Stability
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99.9999% elements maintain resistivity within ±2% over 1000 cycles
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Standard elements drift up to 10% due to impurity migration
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Vapor Pressure
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Our 1800-grade emits 100x fewer metal vapors at 1600°C
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Prevents ceramic surface contamination
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Cold End Performance
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Purer silicon matrix improves low-T conductivity
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Reduces cold end failures by 40%
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Choose Your Purity Level
1700-Grade (99.9%)
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Ideal for standard dental furnaces
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Costs 15% less than 1800-grade
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Still outperforms commercial "pure" elements
1800-Grade (99.9999%)
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Mandatory for high-end zirconia (e.g., BruxZir, Katana)
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Required for translucent multilayer ceramics
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ROI <6 months for labs doing 50+ units/week
After Switching to the 1800°C MoSi2 Heating Element, you'll effortlessly achieve perfect A1 shades without needing tinting liquids!