Aluminum Nitride Plate

Aluminum Nitride Plate

Product

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Aluminum nitride ceramic slabs

AlN ceramic has following properties

  • High thermal conductivity (theoretic value 320W/m.K)
  • High electricity resistance
  • Low coefficient of heat expansion(4.5X10-6ºC)Good march with Si(3.5~4×10-6ºC) and GaAs(6×10-6ºC) 
  • Excellent electricity properties(Dielectric constant, dielectric loss, bulk resistivity, dielectric strength). 
  • Good mechanic properties 
  • Excellent corrosion resistance 
  • Good optical transmission propertyAlN ceramic has become an ideal material for heat radiation and package in industries of large
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Product Description
Property Index of ALN  Aluminum Nitride ceramics
Property Sort Characteristic Unit AN170 AN200 AN220
Basic Properties Appearance/color Gray Gray Beige
Water absorption % 0 0 0
Volume density g/cm3 ≥3.30 ≥3.30 ≥3.26
Surface roughness Ra μm 0.1~0.6 0.1~0.6 0.1~0.6
Camber (length ‰) ≤2‰ ≤2‰ ≤2‰
Thermal Properties Thermal conductivity  (20-30℃) W/m.k ≥170 ≥200 ≥220
Coefficient of
Thermal expansivity (20℃~300℃)
×10-6/℃ 4.4 4.6 4.5
Coefficient of
Thermal expansivity(40℃~800℃)
×10-6/℃ 5.2 5.2 5.2
Mechanical Properties Flexural/Bending strength MPa ≥420 ≥300 ≥200
Modulus of elasticity GPa 320 310 310
Moh''s hardness - 8 8 8
Electrical properties Dielectric constant  (1MHz 25℃) - 8.9 8.6 8.5
(1MHz 25℃) Dielectric loss ×10-4 2.8 2 2
Dielectric strength KV/mm ≥17 ≥16 ≥15
Volume resistivity Ω.cm ≥1014 ≥1014 ≥1013

 

Regular specification of AlN  Aluminum Nitride substrates/plate and Aluminum Nitride wafer
Thickness(mm) L*W( mm)
0.381

2″* 2″                            50.8mm*50.8mm

3″*3″                         76.2mm*76.2mm 4″* 4″           101.6mm*101.6mm 4.5″* 4.5″         114.3mm*114.3mm 127*127mm
138*190mm
0.5
0.635
1
1.5
Thickness(mm) Diameter(mm)
1

Φ16

Φ19

Φ20

Φ26

Φ30

Φ35

Φ40

Φ45

Φ50

Φ52

Φ60 Φ75 Φ80 Φ200
1.2
1.5
2
2.5
3
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Other dimension and thickness which not listed are available upon requests.