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Intricate Machining

Here at Ceramic Substrates & Components Limited with our generations of experience in the precision ceramic industry, we have developed some unique techniques and cutters which enable us to machine incredibly fine and intricate tiny components, complementing the more industrial and commercial sized components.

Many Government organisations along with Scientific and Research Institutes and Universities worldwide use our facilities manned by highly skilled Engineers to fulfil many of their requirements, along with customers ranging from F1 and Super cars through to Aerospace.

We pride ourselves not only on our supreme quality but also our impressive long standing customer base.

Nuclear-related experiments

Since Macor MGC is not dimensionally affected by irradiation, small cubes of the material are machined to a tolerance of one micron and are used as a reference piece to measure dimensional change in other materials.

Welding nozzles

Welding equipment manufacturers are using Macor MGC as a nozzle on the tips of oxyacetylene torches. The material is nonwetting characteristic means molten particles wont adhere to and decrease the effectiveness of the nozzle.

Fixtures

Macor MGC is used as an electrode support and burner block in several industrial high heat, electrical cutting operations due to its low thermal conductivity and excellent electrical properties.

Medical Equipment

Producers of medical components are intrigued by Macor MGC's inertness, precise machinability and dimensional stability.

Conclusion

When you need the performance of a technical ceramic (high use temperature, electrical resistivity, zero porosity) and your application demands the ready fabrication of a complicated shape look at Macor MGC. It will lower costs and substantially reduce the time between design and actual use.

Properties

Thermal

 

SI/Metric

Imperial

Coefficient of expansion

-200-25°C

25-300°C

25-600°C

 

7.4 x 10-6/°C

9.3 x 10-6/°C

12.6 x 10-6/°C

 

41 x 10-7/°F

52 x 10-7/°F

70 x 10-7/°F

Specific heat

25°C

0.79 KJ/kg°C

0.19 Btu/lb°F

Thermal Conductivity

25°C

1.46 W/m°C

              Btu in

10.16      --------

Hr ft2 °F

Thermal diffusivity 25°C

7.3 x 10-7 m2 /s

0.028ft2 /hr

Continuous operating temp

800°C

1472°F

Maximum no load temp

1000°C

1832°F

Mechanical

 

SI/Metric

Imperial

Density

2.52g/cm3

157lbs/ft2

Porosity

0%

0%

Young's modulus 25°C (Modulus of Elasticity)

66.9 GPa

9.7 x 106psi

Poisson's ratio

0.29

0.29

Shear modulus 25°C

25.5 GPa

3.7 x 106psi

Hardness Knoop 100g

Rockwell A

25048

250

48

Modulus of rupture 25°C

Flexural Strength

94Mpa

Min. specified average value

13,600 psi

Min. specified

Average value

Compressive Strength

345MPa

50,000 psi

Fracture Toughness

1.53MPa m0.5

1,390psi in0.5

Electrical

 

SI/Metric

Imperial

Dielectric constant 25°C

1KHz

8.5GHz

6.03

5.67

6.03

5.67

Loss tangent 25°C

1KHz

8.5GHz

4.7 x 10-3

7.1 x 10-3

4.7 x 10 -3

7.1 x 10 -3

Dielectric Strength (25°C)

AC avg. (12mm thickness)DC avg.(12mm thickness)

9.4KV/mm

62.4KV/mm

785V/mil

5206V/mil

DC volume resistivity 25°C

>1016 ohm-cm

>1016 ohm-cm

Chemical

Tests

   

Results

Solution

pH

Time

Temp

Weight loss (mg/cm%uFFFD) gravimetric

5% HClHydrochloric Acid

0.002 N HNO3 Nitric Acid

0.1  N NaHCO3 Sodium Bicarbonate

0.02 N Na2CO3 Sodium Carbonate

5% NaOH Sodium Hydroxide

0.1

2.8

8.4

10.9

13.2

24 hrs

24 hrs

24 hrs

6 hrs

6 hrs

95°C

95°C

95°C

95°C

5°C

~100

~0.6

~0.3

~0.1

~10

Resistance to water over time

H20

7.6

1 day*

3 days*

7 days*

3 days#

6 days#

95°C

95°C

95°C

95°C

95°C

0.01

0.07

9.4

0.06

0.11

* - Water not freshened daily # - Water freshened daily

 

 

 

 

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