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Products > Optical Elements > Crystals > Blanks of MgF2
Blanks of MgF2
Blanks of MgF2 Blanks of MgF2
Product name : Blanks of MgF2
Product No. : 202191395658
Material : MgF2
Size : Dia.20-160mm; 35*35*60mm or according to customer requirements.
Density(g/cm3) : 3.13
Refractive Index : 1.38/550nm
Form : Colorless Granule
Purity : 4N
Application : IR, UV , DUV and VUV
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  Details:
MgF2 crystal is a tetragonal and birefringent crystal with a wide transmission range: 0.11-8.5µm.

Dimensional tolerance: + 0.5mm
Tangential: 35 x 35
Plane perpendicular to: c-axis;
Tolerance + / - max. 15 '
Chamfer: 0.2 + / - 0.1mm x 450
50% @ 120nm, 60% @ 140nm, 90% @ 200nm, 93% @ 300-5000nm

Thermal conductivity: 3.15W/m K 
Specific heat: 920 J/(kg K)
Coefficient of thermal expansion: ⊥C 9×10–6∥C 14 ×10–6 / K
Knoop hardness: 415,576 kg/mm2
Mohs hardness: 5-6
Young's modulus: 138.5 GPa
Shear modulus: 54.66 GPa
Bulk modulus of elasticity: 101.32 GPa
Breaking strength: 49.6 MPa
Elastic coefficient: C11=140 C12=89 C44=57 C13=63 C66=96
Dielectric constant:  105 ~107 Hz 5.45 
Solubility in water: 0.0076 g / 100 g, 18℃
Lattice constant: a=4.64 Å, c=3.06 Å
Crystal type: Tetragonal,P42/mnm
Dissociation surface: (100), (110)
Absorption coefficient: 0.07 at 0.2µm,0.02 at 5.0µm
Poisson's ratio: 0.276
Transmission range: 0.11 - 8.5
Vapor pressure: 1 Pa(at 1150℃), 10 Pa(at 1300℃)

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