Ceramic Substrates & Components Ltd
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 equipment manufacturers are using Macor® MGC as a nozzle on the tips of oxyacetylene torches. The material’s nonwetting characteristic means molten particles won’t adhere to and decrease the effectiveness of the nozzle.
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.
Producers of medical components are intrigued by Macor® MGC’s inertness, precise machinability and dimensional stability.
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.
| SI/Metric | Imperial | |
| Coefficient of expansion
-200-25°C 25-300°C 25-600°C |
9.3 x 10-6/°C 12.6 x 10-6/°C |
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 |
| 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 |
250 48 |
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 |
| 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) |
9.4KV/mm
62.4KV/mm |
785V/mil
5206V/mil |
| DC volume resistivity 25°C | >1016 ohm-cm | >1016 ohm-cm |
| Tests | Results | |||
| Solution | pH | Time | Temp | Weight loss (mg/cm?)gravimetric |
| 5% HCl Hydrochloric 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
© 2024 Ceramic Substrates and Components Ltd
Lukely Works, Carisbrooke Road, Newport, Isle of Wight, United Kingdom, PO30 1DH
Tel: +44 (0)1983 528697 - Email: info@ceramic-substrates.co.uk
Company Registration No.934853
