Report - BOROFLOAT 33 – 机械性能 - Schott AG...耐磨和抗刮擦性能 机械性能 密度 ρ (25 C) 2.23 g/cm3 弹性系数 Ε (DIN 13316) 264 kN/mm泊松比 µ (DIN 13316) 0.2努氏硬度

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