硅 Silicon (Si)

Syngony

Cubic

Symmetry Class

m3m Fd3m

Lattice Constants

a = 5.43089 Å

Refractive Index at n_3.0

3.436

Refractive Index at n_5.0

3.426

Thermal Coefficient of Refractive Index at 25 ℃

1.50 x 10^-4

Transmission Range, microns

1.2 - 10, 50 - 100

Thermal Linear Expansion, ℃^-1 for 25 ℃

2.55 x 10^-6

Thermal Conductivity, W/(m * ℃) at 27 ℃

159

Specific Heat Capacity, J/(kg * ℃)

0.712 x 10³

Melting Point, ℃

1412

Density, g/cm³ at 20 ℃

2.329

Mohs Hardness

7

Young Modulus (E), Pa

1.89 x 10¹⁰

Shear Modulus (G), Pa

7.99 x 10¹⁰

Poisson Ratio

0.266

Molecular Weight

28.09

Solubility

insoluble

Wavelength, Microns

Refractive Index

1.5

3.484

2.0

3.456

3.0

3.436

4.0

3.429

5.0

3.426

6.0

3.424

7.0

3.423

8.0

3.422

9.0

3.422