Macor Machinable Glass Ceramic Washer Ring

• Customization: Available
• Material: Macor Rod
• Refractoriness (℃): 1580< Refractoriness< 1770
• Model NO.: GT-292
• Looks: Rod, Block, Plate, Slot
• Working Temperature: 800c
• Color: Pure White
• Property: Good Vacuum, High and Low Temperature Resistance
• Feature: Long Time Materials
• Type: Refractory Material
• Transport Package: Plywood Case
• Specification: Rohs
• Trademark: shangtao
• Origin: Shanghai, China
• HS Code: 8547100000
• Production Capacity: 500000 PCS Per Year

Product Description

Gongtao company specializes in the production and research of machinable ceramic .The main products:Machinable ceramics and tools, with good machining performance, good vacuum, high and low temperature resistance, insulation and acid-corrosion ect properties.It can be widely used in aviation, aerospace, electronics substrates, high temperature insulation skeleton, ion plating, vacuum coating, plasma display mirror,ion accelerators, lasers, and medical devices.

Our machinable ceramic has good machining performance, and can be turning, milling, grinding, drilling, drilling and tapping and other machining by ordinary machine tools and cutting tools.The machining accuracy can reach up to 5μm, finish high up 0.5μ. It has a good vacuum, high and low temperature resistance, insulation and acid and alkali corrosion resistance ect properties.

Thermal shock resistance of machinable ceramic is very good, quenching from 800 °C to 0 °C,no broken, from 200 °C to 0 °C ,the intensity does not change.
 
The main advantage:
-It can be turned,milled,grinded,drilled and tapped and other machining.
-Precision machining dimensions.
 -Non-magnetic.
 

Item	Standard value	Remarks
Density	2.7g/m³
Porosity	0.096%
Water absorption	0.038
Hardness	4-5	Mohs
Color	pure white
Thermal expansion coefficient	86×10 -7 /°C	100°C ~600°C average value
Thermal conductivity	1.68W/m.k	25°C
Working temperature	800°C
Bending Strength	108MPa
Compress strength	488 MPa
Impact Toughness	>2.56KJ/ m 2
Modulus of elasticity	65GPa
Insertion loss	1~ 4×10 -3	Room temperature
Dielectric constant	6-7	"
Dielectric strength	>40KV/mm	Thickness of sample 1mm
Bulk density	1.08×10 14 Ω.cm	25°C
	1.5×10 10	200°C
	1.1×10 7	500°C
Gas efficiency at normal temperature	8.8×10 -9 ml/s. cm 2	Vacuum experienced for eight hours
Helium permeating rate	1×10 -10 ml/s	After 500C burning,cool to room temperature.
5%HC1	0.26mg/ cm 2	95°C,24 hours
5%HF	83mg/ cm 2	"
50%Na2CO3	0.012 mg/ cm 2	"
5%NaOH	0.85mg/ cm 2	"