Silicon carbide (SiC) heating elements are the workhorse of industrial high-temperature furnaces up to roughly…
Φ6/12 MoSi2 Heating Elements: The Most Versatile Size
Φ6/12 MoSi2 Heating Elements: The Most Versatile Size
The Φ6/12 element (6 mm hot zone, 12 mm cold end) is the workhorse of the MoSi2 world. It carries enough current for general box and tube furnaces, yet stays compact enough for most chamber geometries — which is why it is the size we ship most often.
Specification at a glance
| Parameter | Φ6/12 value |
|---|---|
| Hot-zone diameter | 6 mm |
| Cold-end diameter | 12 mm |
| Typical max current (air, steady state) | ~350 A |
| Surface load at 1600°C (planning) | ~12 W/cm² |
| Common grades | EQ1700, EQ1800, EQ1850 |
| Typical use | General box / tube furnaces, sintering, heat treatment |
These figures are planning values; confirm against the surface-load and current-limits table and the complete MoSi2 spec sheet.
Why Φ6/12 is the default
At ~350 A it delivers the wattage most mid-size furnaces need without the bulk of a Φ9/18 leg. It scales across all three grades, so the same geometry serves a 1650°C ceramic firing (EQ1700), a dental sinter (EQ1800), or a 1750°C lab run (EQ1850). It is the size behind most of our sintering-furnace and tube-furnace element sets.
Ordering a matched set
We supply Φ6/12 U-type elements cut to your drawing, including the popular Φ6/12 U-type set (265×450×50 mm). Browse the full U-type MoSi2 range or send us your furnace dimensions.
See the full MoSi2 range or contact us for a furnace power calculation.
Why specify with HeatingDriver
Why specify with HeatingDriver — HeatingDriver is a manufacturer and exporter of MoSi2 (molybdenum disilicide) heating elements with nearly 20 years of experience. We supply EQ1700U / EQ1800U / EQ1850U grades for 1700–1850°C, free drawing review, custom sizes and shapes, and technical support for furnace builders worldwide. Browse our MoSi2 heating elements.
What are Φ 6/12 MoSi2 elements?
Φ 6/12 has a 6 mm hot zone and 12 mm cold end; it is the most versatile size, balancing power and chamber fit for many furnaces.
Where are Φ 6/12 elements used?
They serve ceramic sintering, heat treatment and general high-temperature furnaces needing moderate power up to 1700–1800°C.
What grades come in Φ 6/12?
Φ 6/12 elements are supplied in EQ1700U, EQ1800U and EQ1850U grades for 1700–1850°C operation.
What surface load applies?
Typical MoSi2 surface load is 4–9 W/cm², chosen with furnace size and atmosphere.
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