WD-3 is a low temperature powder with heavy silicone treatment, mainly used in low quality elements of low wattage loading or liquid heating elements. Elements stuffed with this material do not require annealing or sealing but with perfect moisture proof performance.
Chemical Analysis (%)
MgO CaO Al2O2 Fe2O3 SiO2
¡Ý93.0 ¡Ü2.5 ¡Ü0.9 ¡Ü0.8 ¡Ü2.5
Particle Distribution
Mesh £«40 £«60 £«80 £«140 £«200 £«325 £325
Dia(um) £«425 £«250 £«180 £«106 £«75 £«45 £45
Quantity (%) 0£1 26£38 16£24 18£28 6£14 8£14 0£8
Tap Density
2.26£2.36g/cm3
Flow
3# Ford Cup£¨¦Õ2.165mm£2.185mm£©£º160£240s/100g
4# Ford Cup£¨¦Õ3.97mm£4.01mm£©£º34£40s/100g
Electrical Property
Testing Condition
Tube ¡¡Copper coated iron
Reduction ¡¡¦Õ8.0mm¡ú¦Õ6.6mm
Wire ¡¡0Cr25A15£¬¦Õ0.30mm
Helix ¡¡¦Õ2.3mm
Heated length ¡¡30.0cm£32.0cm
Energized period ¡¡15 mins
Remark: Forusers¡¯reference, the chart here shows typical values of performance by this type of powder.
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