Technical Ceramics

Aluminium Silicate

Morgan Technical Ceramics aluminium silicate material (known as M120F) is a composite of around half alumina and half silicon oxide which features good thermal shock resistance and easily replaces carbon fixtures in many applications.

By changing process conditions, this highly versatile material can be tailored to provide a range of hardness values to suit customer requirements, whilst maintaining its thermal and electrical properties.

Our customers benefit from this material as it is cost effective and does not dirty the workplace like carbon can.

This material is excellent for the manufacture of fixtures, firing and dicing plates, and is flexible enough to be manufactured into intricate designs specified by our customers.

We work closely with customers in the semiconductor, medical and aerospace markets to design these products to fit their applications. Our technical engineers will work with you from design through to prototype and production offering ISO 9001 quality and full trace-ability. 

Aluminium Silicate M-120F (Mac-AS970W)

Property

Metric

Imperial

Colour

Tan to pink

Bulk density (fired)

Mg/m3

2.3

lb/in3

0.082

Porosity

2 - 3 (can be made impervious to water) % nominal

Rockwell hardness (R15T)

95 nominal maximum

Tailorable range

50-95

Compressive strength

MPa

275

lb/in2

40,000

Tensile strength

MPa

17.6

lb/in2

2500

Flexural strength

MPa

64

lb/in2

900

Young’s modulus

GPa

55.4

lb/in2

8.0

Impact resistance (Charpy D256-56)

mm

83.8

in

3.3

Thermal conductivity

W/m.K

1.26 @300°C

BTU/ft.hr

0.73 @575°F

Thermal expansion coefficient

x10-6 /°C 

2.9 @24-260°C
3.2 @24-675°C
3.2 @24-900°C

x10-6 /°F 

1.6 @75-500°F
1.8 @75-1250°F
1.8 @75-1650°F

Maximum no-load temperature

°C

1150

°F

2100

Softening point of material

°C

1760

°F

3200

Dielectric strength

dc kV/mm

3.9

V/mil

100

Dielectric constant

1 MHz @24°C

5.3

100 MHz @75°F

5.3 

Dissipation factor

1 MHz @24°C

0.010

100 MHz @75°F

0.007

Loss factor

1 MHz @24°C

0.053

100 MHz @75°F

0.036

Te value

°C

595

°F

1100

Volume resistivity

ohm.cm 

>1014 @24°C
6.0x1011 @93°C
2.0x109 @260°C
5.0x106 @480°C
3.5x105 @675°C
5.0x104 @900°C

Aluminium Silicate Applications 

  • Boats
  • Fixtures
  • Nozzles
  • Furnace tooling
  • Slicing tooling
  • Insulators
  • Glass sealing
  • Brazing
  • Alloying
  • Soldering
  • Welding