Glass

Si (optical grade)

Si (optical grade) is a glass.

Quote a part in Si (optical grade)Compare with…All glass grades

Properties

Datasheet

Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.

Against other glass grades

Yield strength—

54 MPa8 ksifamily median 77 MPa11 ksi490 MPa71 ksi

Tensile strength—

67 MPa10 ksifamily median 90 MPa13 ksi520 MPa75 ksi

Density—

2.2 g/cm³0.079 lb/in³family median 2.5 g/cm³0.09 lb/in³2.96 g/cm³0.107 lb/in³

Hardness (HB equiv.)—

503 HBfamily median 585 HB1,093 HB

Max service temp—

457 °C855 °Ffamily median 600 °C1,112 °F1,310 °C2,390 °F

Electrical conductivity—

< 0.001 % IACSfamily median < 0.001 % IACS< 0.001 % IACS

Machinability—

20 / 100family median 20 / 10020 / 100

Relative cost—

35family median 3535

Strength versus weight in the glass family

Yield strength against density for every glass grade FabDigit runs. Si (optical grade) is highlighted; hover a dot for its name, or open the interactive family chart.

Equivalent designations

Standards and trade names that resolve to Si (optical grade) in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.

Also called: Si光学矅硅单晶硅(光学级)光学硅片

Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.