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MATERIAL	BASE PROPERTIES	REGULAR REFLECTANCE	PRODUCTS AVAILABLE

Aluminium (Al)

Aluminium (+MgF₂) coating reflectivity

Aluminum has a high reflectance over the entire visible and near infrared spectrum. It is simple to deposit as a thin film, making it the ideal choice for most non-critical applications. The aluminum is overcoated with a single layer of MgF₂ to make it considerably more durable than bare aluminum.


MATERIAL	BASE PROPERTIES	REGULAR REFLECTANCE	PRODUCTS AVAILABLE




	PARAMETER	VALUE

OPTICAL
	Termal Radiation Coefficient	0.04 … 0.06 at 323 … 773 K
PHYSICAL
	Density	2.7 g/cm³ at 293 K
	Melting Point	933 K
	Heat of Melting	322 ... 394 kJ/kg
	Thermal Conductivity	225 Wm^-1K^-1at 293K
	Thermal Expansion	18.85 x 10^-6/°C
	Hardness	Knoop 158.3 kg/mm² (100)
	Specific Heat Capacity	854J/(kg K)
	Brinell Hardness	167 MPa
	Young's Modulus (E)	71 GPa
	Shear Modulus (G)	26 GPa
	Poisson Ratio	0.26
	Resistivity	2.66 x 10^-6 Ohm x cm at 293 K


MATERIAL	BASE PROPERTIES	REGULAR REFLECTANCE	PRODUCTS AVAILABLE


MATERIAL	BASE PROPERTIES	REGULAR REFLECTANCE	PRODUCTS AVAILABLE

Wavelength, µm	0,76	1,0	2,0	3,0	4,0	10,0
Regular Reflectance	0,72	0,75	0,86	0,91	0,92	0,98


MATERIAL	BASE PROPERTIES	REGULAR REFLECTANCE	PRODUCTS AVAILABLE

The following products from Aluminium are available:

  WINDOWS

  BLANKS

  LENSES

MATERIALS:

Fluorides

CaCO₃

	Cu

	Mo

	Al