MoSi₂ Heating Element 1700°C — Standard Grade, Air Atmosphere, Dumbbell/U-Type
Standard molybdenum disilicide (MoSi₂) heating element rated to 1700°C element surface temperature in oxidising atmosphere. Dumbbell/U-type shape. Sourced from Luoyang by ThermalEast for muffle furnace, shuttle kiln, and electronics sintering buyers worldwide.
Buyer Brief
The MoSi₂ 1700°C standard-grade heating element is the dominant specification for air-atmosphere industrial furnaces operating between 1200°C and 1600°C furnace temperature. Engineers specify it when replacing Kanthal A1/D elements that have reached their temperature ceiling, or when commissioning new box furnaces, muffle furnaces, or shuttle kilns. The element's self-forming silica glaze passivation sustains performance across repeated thermal cycles in oxidising atmosphere.
Spec Snapshot
| Property | Unit | Value |
|---|---|---|
| Max element surface temperature | °C | 1700 |
| Max recommended furnace temperature | °C | 1600 |
| Operating atmosphere | — | Air / oxidising (NOT vacuum or reducing) |
| Standard reference | — | GB/T 26286 |
| Resistivity at 20°C | Ω·m | ~3.5 × 10⁻⁷ |
| Density | g/cm³ | 6.0–6.2 |
| Primary phase | — | MoSi₂ (>90%) |
| Protection mechanism | — | Self-forming SiO₂ glaze (passive) |
| Shape | — | Dumbbell / U-type; W-type available |
| Cold-end coating | — | Aluminium silicate cement (lower resistivity zone) |
| Connection method | — | Aluminium clamp / silver paste terminal |
† Spec values are typical for standard-grade 1700°C MoSi₂ elements. Specific leg diameter and length combination determines exact resistance; request calculation sheet for your furnace layout.
Use Cases
MLCC sintering furnace element replacement at 1350°C. An MLCC producer operating twelve box furnaces for barium titanate sintering switched from Kanthal A1 to MoSi₂ 1700°C dumbbell elements. Element service life extended from 200 to 2,000+ operating hours, and process temperature was successfully raised to 1380°C without element modification.
Dental furnace OEM supply. A dental furnace manufacturer commissioning compact zirconia sintering furnaces (max 1580°C) specified MoSi₂ 1700°C elements with element-to-element resistance matching (±5%) across production batches to ensure consistent sintering curves without controller recalibration.
Shuttle kiln element upgrade to 1580°C. A ceramics research centre required an element upgrade from 1400°C Kanthal Super to enable sustained operation at 1550–1580°C. MoSi₂ 1700°C W-type elements provided wider lateral coverage and reduced element count relative to U-type configuration.
Why ThermalEast
ThermalEast sources from audited Luoyang producers at direct-mill pricing — typically 30–50% below equivalent European-manufactured elements (Kanthal Super, Sandvik Globar) — with material certification and ocean-freight-ready packaging for both MRO replacements and OEM programmes.