Transcription of Product Information: CORNING PYREX 7740 - JMC GLASS
1 GLASS Type BorosilicateAvailable in rolled sheet from 3/32 to 2-1/8 and in polished plate as lb/ft3 Young's x 103 x 106psiPoisson s x 103 x 106psiKnoop Hardness (KHN100)418 ViscosityWorking Pt. (104poises}1252 C2286 FSoftening Pt. ( }821 C1510 FAnnealing Pt. (1013poises}560 C1040 FStrain Pt. (1014poises}510 C9 5 0 FThermalCoefficient of Expansion (0-300 C) x 10-7/ x 10-7/ F(25C to Set Point 515 C) x 10-7/ x 10-7/ FSpecific Heat, 25 cal/g Btu/lb FThermal Conductivity, 25 ftsec cm2 Ch ft2 FThermal Diffusivity, 25 cm2 in2/secOpticalRefractive Index ( nm) Constant394 nm/cmkg/mm2 Transmission @ 440 *@ ** Through a sample thickness mmElectricalLog10 Volume Resistivity @ 250 ohm-cm@ 350 ohm-cmDielectric Constant @ 20 C; 1 Tangent @ 20 C.))))
2 1 Information: CORNING PYREX 7740 Optical DataGlass thickness: 2, 6, and 15 mmMicrometer Wavelength7/01
