Ceramic Screw

SCE

• Alumina Ceramic Screw enables continuous use at 1500°C. Excellent electrical insulation and resistance against heat and chemicals.
• May be used in chemical resistant applications such as FPD (Flat Panel Display) and semiconductor production equipment and devices, printed circuit board etching devices, metallic surface treatment equipment and facilities, and chemical plant facilities.
• May be used in heat resistant applications, such as hot water and chemical pumps.
• May be used in electronic applications such as electrical transformers and computer equipment.
• Material/Finish
• Al₂O₃ (Alumina 96%)
• Torque (Reference)

  M	Torsional Breaking Torque* (N·m)
  M3	0.6
  M4	0.8
  M5	1.3
  M6	2
  M8	4
  M10	5

  *The numerical values listed above are for reference only; they are not guaranteed under performance conditions.
  
  Physical Properties

  Vicker's Hardness	1400
  Flexural Strength(N/mm2)	295
  Linear Expansion Coefficient(x10-6K-1)	8
  Thermal Conductivity(x10-3W/(m·K))	2.09
  Volume Restitivity(Ω·cm)	>1014
  Maximum Use Temperature(°C)	1500

  
  Chemical Resistance

  Chemical Name	Temperature Conditions	Time	Corrosion
  35% Hydrochloric Acid	Boiling	30 minutes	A
  70% Nitric Acid	Boiling	30 minutes	A
  98% Sulfuric Acid	Boiling	30 minutes	A
  90% Phosphoric Acid	Boiling	30 minutes	B
  60% Hydrofluoric Acid	20°C	24 hours	C
  10% Potassium Hydroxide	80°C	7 days	A
  Potassium Hydroxide	500°C(Boiling)	24 hours	C
  Sodium Hydroxide	500°C(Boiling)	24 hours	B
  Sodium Carbonate	900°C(Boiling)	24 hours	B
  Sodium Sulfate	1000°C(Boiling)	24 hours	A
  Potassium Fluoride	90°C(Boiling)	4 hours	D

  A: No Corrosion
  B: Slight Corrosion
  C: Moderate Corrosion
  D: Heavy Corrosio