| Resistance alloy | Popular Grade | ||||
| FeCrAl wire | 0Cr21Al4 | 0Cr23Al5 | 0Cr25Al5 | 0Cr21Al6Nb | 0Cr27Al7Mo2 |
| NiCr wire | Cr20Ni80 | Cr30Ni70 | Cr15Ni60 | Cr20Ni35 | Cr20Ni30 |
| CuNi wire | CuNi1 | CuNi6 | CuNi10 | CuNi23 | CuNi44 |
| Thermocouple wire | K Type | N Type | E Type | J Type | T Type |
| Precision alloy | 6J40 | 6J11 | 6J12 | 6J8 | 6J13 |
| Ni based super alloy | Monel 400 | Incoloy 800 | Inconel 600 | Inconel 625 |
Inconel 718 |
Round wire: diameter 0.03mm-10.0mm
Flat wire: thickness 0.2mm-1.0mm, width 0.08mm-40.0mm
Thermocouples
Low cost thermocouple materials can be used up to 1100°C (type K, Nicr/NiAl) or 1200°C (type N, nicrosil/nisil).
Above this temperature these materials have only a short life so more expensive platinum/rhodium (Pt/Rh) thermocouples must be used eg types R, B, 20/40.
Round wire: diameter 0.020mm-10.0mm
Flat wire: thickness 0.025mm-4.0mm, width 0.040mm-4.0mm
Heating Elements
Fecral resistance wire can be used up to 1300C. Above this temperature more expensive silicon carbide(SiC) elements are used. And from1500°C to1600°C a higher grade of silicon carbide is required.
The cost of using MoSi2 elements is increased by their need for low voltage transformers and a current limiting control system.
1800°C graphite(C), molybdenum(Mo) or zirconia(Zro2) elements are used.
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