Advanced Ceramics

Ultramat Advanced Materials and Technologies Ltd. has extensive experience with Advanced Ceramic materials and components. Since 1993, our customers have kept coming back to us with their requirements for Advanced Ceramic materials and custom fabricated parts.

Fabricated parts with excellent surface finishes and tight tolerances are made upon request. Order quantities range from one unit to large run jobs. We strive to provide reliable, problem-free service while providing quality and economic solutions to meet your needs.

Our extensive Advanced Ceramic product portfolio includes ceramic insulators, substrates, sputtering targets, bushings, seal faces etc.

Featured Materials

Aluminium Oxide (Al₂O₃)

Zirconium Oxide (ZrO₂₎

Aluminium Nitride (AlN)

Boron Nitride (BN)

AlN+BN

Silicon Nitride (Si3N4)

Silicon Carbide ( SiC)

Boron Carbide ( B4C )

Porous Ceramic

Macor

Mullite

Cordierite

Sapphire

BK7

Custom,Plastic,Part,Manufactured,In,Cnc,Milling,Machine

Industries served:

Thermal Processing

Electronics

Semiconductors

Defense Industry

Medical

Fuel cell and energy

Chemical processing

Precision optics

Space

We offer advanced components that are heat stable, wear resistant, highly conductive or electrically dissipative.

Our Advanced Ceramic products include:

Ceramic guide rings

Ceramic laser waveguides

Cooling channel components

Laser and Electron tubes

Surgical device tips

Ceramic Seal faces

Any ceramic substrate

Ceramic sensor components

Tubes, Rods, Rings

Insulators

Ferrules

Nozzles

Crucibles and Trays

Ball mill elements

any custom part

Featured Materials

Aluminium Oxide Grades ( Alumina ):

Properties	Units	Test	85% Al2O3	90% Al2O3	94% Al2O3	96% Al2O3	98.5% Al2O3	99.5% Al2O3	99.8% Al2O3
Density	gm/cc	ASTM C20	3.42	3.60	3.70	3.72	3.80	3.90	3.92
Crystal Size Avg.	Microns	Thin Section	6	4	12	6	6	6	6
Water Absorption	%	ASTM 373	0	0	0	0	0	0	0
Flexural Strength (MOR) 20C	MPa (psi x 10^3)	ASTM F417	296 (43)	338 (49)	352 (51)	358 (52)	375 (54)	379 (55)	375 (54)
Elastic Modulus 20C	GPa (psi x 10^6)	ASTM C848	221 (32)	276 (40)	303 (44)	303 (44)	350 (51)	370 (54)	370 (54)
Compressive Strength 20C	MPa (psi x 10^3)	ASTM C773	1930 (280)	2482 (360)	2103 (305)	2068 (300)	2500 (363)	2600 (377)	2500 (363)
Hardness	GPa (kg x mm^2)	Knoop 1000 gm Rockwell 45N	9.4 (960) 73	10.4 (1058) 75	11.5 (1175) 78	11.5 (1175) 78	13.7 (1400) 82	14.1 (1440) 83	14.1 (1440) 83
Thermal Conductivity 100C	W/m K	ASTM C408	16.0	16.7	22.4	24.7	27.5	30.0	30.0
Coefficient of Thermal Expansion 25-1000C	1X10^-6 /C	ASTM C372	7.2	8.1	8.2	8.2	8.2	8.2	8.2
Thermal Shock Resistance	C	Quenching	300	250	250	250	200	200	200
Max Use Temp	C	No Load Cond.	1400	1500	1700	1700	1700	1750	1750
Dielectric Strength	ac-kV/mm (ac V/mil)	ASTM D116	9.4 (240)	8.3 (210)	8.3 (210)	8.3 (210)	8.7 (220)	8.7 (220)	8.7 (220)
Dielectric Constant 1MHz	25C	ASTM D150	8.2	8.8	9.1	9	9.6	9.7	9.8

Zirconium Oxide Grades ( Zirconia ):

Properties	Units	Test	Zirconia Toughened Alumina	Magnesia partially Stabilized Zirconia	Yttria partially stabilized Zirconia (Sintered)	Yttria partially stabilized Zirconia (Hipped)
Density	gm/cc	ASTM C20	4.01	5.72	6.02	6.07
Crystal Size Avg.	Microns	Thin Section	2	35	1	1
Water Absorption	%	ASTM 373	0	0	0	0
Flexural Strength (MOR) 20C	MPa (psi x 10^3)	ASTM F417	450 (65)	758 (110)	1240 (180)	1720 (250)
Elastic Modulus 20C	GPa (psi x 10^6)	ASTM C848	360 (52)	200 (29)	210 (30)	210 (30)
Compressive Strength 20C	MPa (psi x 10^3)	ASTM C773	2900 (421)	1750 (254)	2500 (363)	2500 (363)
Hardness	GPa (kg x mm^2)	Knoop 1000 gm Rockwell 45N	14.4 (1475) 85	11.8 (1200) 77	12.7 (1300) 81	12.7 (1300) 81
Thermal Conductivity 100C	W/m K	ASTM C408	27.0	2.2	2.2	2.2
Coefficient of Thermal Expansion 25-1000C	1X10^-6 /C	ASTM C372	8.3	10.2	10.3	10.3
Thermal Shock Resistance	C	Quenching	300	350	350	350
Max Use Temp	C	No Load Cond.	1500	500	1500	1500
Dielectric Strength	ac-kV/mm (ac V/mil)	ASTM D116	9.0 (228)	8.4 (240)	9.0 (228)	9.0 (228)
Dielectric Constant 1MHz	25C	ASTM D150	10.6	28.0	29.0	29.0

Surface Finishes Chart

R a-Um-	0.025	0.05	0.1	0.2	0.4	0.8	1.6	3.2	6.3	12.5	25	50
R a-Uinch	1	2	4	8	16	32	63	125	250	500	1000	2000
N Grade	N1	N2	N3	N4	N5	N6	N7	N8	N9	N10	N11	N12
Finish	Fine lapped	Lapping Superfinishing	Lapping Superfinishing	Ground	Ground	Ground	Smooth Turned	Smooth Turned	Medium Turned	Medium Turned	Rough Machined	Rough Machined