Ferro-Ceramic Grinding Inc. machines over 15 different materials
Corning Pyrex
Corning Pyrex Properties
Corning Pyrex® (7740) Pyrex is a Trade Name of Corning Inc. for their borosilicate glass.
Corning Pyrex Properties
Corning Pyrex® (7740)
Pyrex is a Trade Name of Corning Inc. for their borosilicate glass. Borosilicate is known for it’s ability to withstand thermal shock, and thermal and electrical insulating qualities. Typical uses for this material include labware and many consumer glass products such as coffee pots.
| Properties | Units | Test | Value |
|---|---|---|---|
| Physical | |||
| Chemical Formula | - | - | borosilicate glass |
| Density, r | g/cm3 | ASTM C20 | 2.23 |
| Color | - | - | white/ transparent |
| Crystal Structure | - | - | random |
| Water Absorption | % @R.T. | ASTM C373 | 0.0 |
| Hardness | Moh's | -- | |
| Hardness | knoop (kg/mm2) | Knoop 100g | 418 |
| Mechanical | |||
| Compressive Strength | MPa @ R.T. | ASTM C773 | N/A |
| Tensile Strength | MPa @ R.T. | ACMA Test #4 | N/A |
| Modulus of Elasticity (Young's Mod.) | GPa | ASTM C848 | 64 |
| Flexural Strength (MOR) | MPa @ R.T. | ASTM F417 | 69 |
| Poisson's Ratio, u | - | ASTM C818 | 0.20 |
| Fracture Toughness, KIc | MPa x m1/2 | Notched Beam Test | 0.77 |
| Thermal | |||
| Max. Use Temperature (* denotes inert atm.) | ºC | No load cond. | 490 |
| Thermal Shock Resistance | DT (ºC) | Quenching | 100 |
| Thermal Conductivity | W/m-K @ R.T. | ASTM C408 | 1.1 |
| Coefficient of Linear Thermal Expansion, al | mm/m-ºC (~25ºC through ±1000ºC) | ASTM C372 | 3.25 (through 300ºC) |
| Specific Heat, cp | cal/g-ºC @ R.T. | ASTM C351 | 0.18 |
| Electrical | |||
| Dielectric Constant | 1MHz @ R.T. | ASTM D150 | 4.6 |
| Dielectric Strength | kV/mm | ASTM D116 | 0.5 |
| Electrical Resistivity | Wcm @ R.T. | ASTM D1829 | 8 x 1010 |
*Although we have no reason to doubt the accuracy of the data presented, Ferro-Ceramic Grinding Inc. offers this information for comparison only, and disclaims any and all liability from error, omissions or inaccuracies, such that it does not constitute a warranty or representation for which we shall assume legal responsibility.