Laser-cut Alumina (Al2O3) substrates

At CERcuits, we provide laser-cut alumina 96 substrates with a high precision made to your design. Simply complete the form above and click ‘calculate’ to get a quote. If you like the price, you can order immediately or change some parameters. 

Alumina, also known as Aluminum Oxide or Al2O3, is a hard-wearing advanced technical ceramic material frequently used in a wide variety of industrial, medical, and electronic applications. After firing, flat substrates can only be precisely machined using laser or diamond methods. The benefits of the materials are high hardness and wear resistance, low erosion levels, high-temperature resistance, high-temperature conductivity, corrosion resistance, and bio-inertness. More information can be found in the material table below.

The following processes are possible:

• Cutting
• Drilling
• Milling
• Laser scribing (click for more info)
• Laser Marking

Dimensions & thicknesses of laser-cut alumina :

Available thicknesses	Max dimensions
0.25mm / 0.010"	Standard: 110 mm x 110 mm / 4.3 in x 4.3 in Special: 160 mm x 110 mm / 4.3 in x 6.3 in
0.38mm / 0.015"	Standard: 110 mm x 110 mm / 4.3 in x 4.3 in Special: 185 mm x 133 mm / 5.2 in x 7.3 in
0.50mm / 0.020"	Standard: 110 mm x 110 mm / 4.3 in x 4.3 in Special: 160 mm x 133 mm / 5.2 in x 6.3 in
0.63mm / 0.025"	Standard: 110 mm x 110 mm / 4.3 in x 4.3 in Special: 160 mm x 110 mm / 4.3 in x 6.3 in
0.76mm / 0.030"	Standard: 110 mm x 110 mm / 4.3 in x 4.3 in Special: 160 mm x 110 mm / 4.3 in x 6.3 in
1.00mm / 0.040"	Standard: 110 mm x 110 mm / 4.3 in x 4.3 in Special: 200 mm x 165 mm / 6.5 in x 7.9 in
1.50mm / 0.050"	Standard: 110 mm x 110 mm / 4.3 in x 4.3 in Special: 160 mm x 110 mm / 4.3 in x 6.3 in

Quotes for standard max dimensions can be generated via the calculator above. For special (larger) sizes, please contact us.

Tolerances:

Thickness 

• 0.25mm: +/- 0.05 (0.015″ +/- 0.002)
• 0.38mm: +/-0.05 (0.015″ +/-0.002)
• 0.5mm: +/-0.05  (0.020″ +/-0.002)
• 0.63mm +/-0.06 (0.025″ +/-0.002)
• 0.76mm +/-0.8 (0.030″ +/-0.003)
• 1mm +/-0.10 (0.040″ +/-0.004)
• 1.5mm: +/- 0.12 (0.050″ +/-0.005)
• 2mm: -0.2 / +0.5 (0.080″ -0.080 / +0.020)

Edge & hole tapering: 

• <1mm: =<5%
• >1mm: up to 10%

Discolorations & cutting marks

• standard: allowed
• Special: please contact us

Lead time: An estimated lead time is provided on the quote above, subject to material availability (you can check our stock here). For faster lead times, please contact us.

Machining tolerances

Item	Thickness	Standard tolerance
Dimensional L X W	≤0.635mm	+0.15mm / -0.05mm
	>0.635 & ≤ 1mm	+0.20mm / -0.05mm
	> 1mm	+0.25mm / -0.05mm
Holes & Lines	≤0.635mm	+0.15mm / -0.05mm
	>0.635 & ≤ 1mm	+0.20mm / -0.05mm
	> 1mm	+0.25mm / -0.05mm
Hole Diameter	≤5mm	+/- 0.05mm
	>5mm	+/-0.1mm

Contact us for more stringent requirements

We can accept the following file types for your drawings

• DXF, DWG
• Step
• PDF
• Gerber

Aluminum Oxide (Al2O3) material properties (96% grade) :

Property	Items	Unit	Al2O3 96%
Physical	Color	-	White
	Material - Aluminium Oxide	%	96%
	Water absorption	%	0
	Reflectivity	%	94
Electrical	Dielectric Constant (1MHz)	-	9-10
	Dielectric Loss	*10^-4	3
	Dielectric strength	MV/m or KV/mm	>15
	Insulation/Volume resistance	Ω·cm	>10^14
Mechanical	Density after Sintering (Bulk density)	g/cm3	>3.7
	flexural Strength (3 point)	Mpa	>400
	Surface Roughness	μm	0.2～0.75
	Camber	Lenght%	≦2
Thermal	Coefficient of Thermal Expansion (CTE)	ppm/°C	6.5-7.5
	Coefficient of Thermal Expansion (CTE) RT~500 °C	ppm/°C	6.5-8.0
	Thermal Conductivity (25°C)	W/m‧K	24
* Reflectivity test reference thickness of 1mm

The data shown is typical of commercially available material and is only offered for comparative purposes. The information shall not be interpreted as absolute material properties nor does it constitute a representation or warranty for which we assume legal liability. User shall determine the suitability of the material for the intended use and assumes all risk and liability whatsoever in connection therewith.

Frequently asked questions about our laser machined alumina services:

Full FAQ here

Lead time: We ship in 15-20 working days. For faster lead times, please contact us.