【Specification】
・Maximum operating temperature: 500℃
・Heating element: Tungsten
・Thermal conductivity: 180 W/m·K or more
・Thermal expansion coefficient: Thermal expansion coefficient 4.8×10 -6 / ℃
・Volume resistivity: Volume resistivity 2.6 × 10 14 Ω·cm (25 ℃)
・Usable dimensions: 130 × 130 mm or 130 130 mm or less
https://watty.co.jp/en/heater2/aluminum-nitride2/