Materials Properties Chart

AccumetsMaterialPropertiesChart
[ Download/View File ]

Properties UnitsTest99.5% Alumina99.6% AluminaAluminum Nitride K170
Chemical Formula  Al2O3Al2O3AlN
Densityg/cm3ASTM C203.7 – 3.973.873.28
Color  WhiteWhiteTan / Gray
Crystal Structure  HexagonalHexagonalHexagonal
Water Absorption% @ R.T.ASTM C3730.00.00.0
HardnessMoh’s 9  
HardnessRockwell  87 
Hardnessknoop kg/mm2Knoop 100G2000 1200
Compressive StrengthMPa @ R.T.ASTM C7732070 – 2620  
Compressive StrengthM(106) lbs/in2  54 
Tensile StrengthMPa @ R.T.ACMA Test #4260-300  
Elastic Modulus106psiASTM C848 54 
Modulus Of Elasticity

(Young’s Mod.)

GpaASTM C848394 320
Flexural StrengthK(103) lbs/in2  9059 (4pt.bend)
Flexural Strength

(MOR)

MPa @ R.T.ASTM F417310 – 379  
Poisson’s Ratio ASTM C8180.27  
Poisson’s RatioASTM C848 0.200.24
Fracture ToughnessMPa @ m1/2Notched beam Test4.5 3.5
Max use Temperature

(* denotes inert atm)

oCNo Load Cond.1750 1600
Thermal Shock ResistanceDT (0C)Quenching200  
Thermal ConductivityW/m-K @ R.T.ASTM C4083527170
Coefficient of Linear Thermal Expansion10-6/0CASTM C372 7.0 – 8.3 (25-10000C)4.6 25-300 0C
Coefficient of Linear Thermal Expansionmm/m-0C (-250C through £ 10000C)ASTM C3728.4  
Specific HeatCal/g-0C @ R.T.ASTM C3510.21  
Dielectric Constant1MHz @ R.T.ASTM D1509.69.9±..18.6
Dielectric Strength (60 cycles AC avg. RMS) .025 Thick .050 ThickVolts/milASTM D149 600 450 
Dielectric StrengthkV/mmASTM D11615 14
Electrical ResistivityWcm @ R.T.ASTM D1829>1014>10141013
Properties UnitsTestAluminum NitrideBeryllia OxideCordierite
Chemical Formula  AlNBeO2MgO-2Al2O3-5SiO2
Densityg/cm3ASTM C203.252.852.60
Color  Tan / GrayWhiteTan
Crystal Structure  Hexagonal Orthorhombic
Water Absorption% @ R.T.ASTM C3730.0 0.02 – 3.2
HardnessMoh’s 5 7
HardnessRockwell  45 
Hardnessknoop kg/mm2Knoop 100G1170 _______
Compressive StrengthMPa @ R.T.ASTM C7732068225k psi Astm c 773-74350
Compressive StrengthM(106) lbs/in2    
Tensile StrengthMPa @ R.T.ACMA Test #4_______225K psi Astm c-565-7125.5
Elastic Modulus106psiASTM C848   
Modulus Of Elasticity

(Young’s Mod.)

GpaASTM C848308M 106 lbs/in2

50

70
Flexural StrengthK(103) lbs/in2  35 (3pt.bend) 
Flexural Strength

(MOR)

MPa @ R.T.ASTM F417428 117
Poisson’s Ratio ASTM C8180.250.26 Astm C-565-710.21
Poisson’s RatioASTM C848   
Fracture ToughnessMPa @ m1/2Notched beam Test3.5 ______
Max use Temperature

(* denotes inert atm)

oCNo Load Cond.1600 1371
Thermal Shock ResistanceDT (0C)Quenching400>1500500
Thermal ConductivityW/m-K @ R.T.ASTM C40882.32703.0
Coefficient of Linear Thermal Expansion10-6/0CASTM C372 9.0 25-10000C 
Coefficient of Linear Thermal Expansionmm/m-0C (-250C through £ 10000C)ASTM C3724.6 – 5.7 1.7
Specific HeatCal/g-0C @ R.T.ASTM C3510.25 0.35
Dielectric Constant1MHz @ R.T.ASTM D1508.0 – 9.16.54.7
Dielectric Strength (60 cycles AC avg. RMS) .025 Thick .050 ThickVolts/milASTM D149   
Dielectric StrengthkV/mmASTM D11615 5.11
Electrical ResistivityWcm @ R.T.ASTM D1829>10141015 ohm-cm1014
Properties UnitsTestGraphiteLava,

Grade A

Corning Macor
Chemical Formula  CAl2(Si4O10)-(OH)2Glass Ceramic
Densityg/cm3ASTM C202.252.302.52
Color  BlackPinkWhite
Crystal Structure  HexagonalRandomRandom
Water Absorption% @ R.T.ASTM C3730.5 – 3.02.50.0
HardnessMoh’s 1.0 – 1.564.5
HardnessRockwell    
Hardnessknoop kg/mm2Knoop 100G________500250
Compressive StrengthMPa @ R.T.ASTM C77396172.5345
Compressive StrengthM(106) lbs/in2    
Tensile StrengthMPa @ R.T.ACMA Test #44.820.790
Elastic Modulus106psiASTM C848   
Modulus Of Elasticity

(Young’s Mod.)

GpaASTM C8484.8_______66.9
Flexural StrengthK(103) lbs/in2    
Flexural Strength

(MOR)

MPa @ R.T.ASTM F417506994
Poisson’s Ratio ASTM C818_____________0.29
Poisson’s RatioASTM C848   
Fracture ToughnessMPa @ m1/2Notched beam Test_______________1.53
Max use Temperature

(* denotes inert atm)

oCNo Load Cond.3650*11501000
Thermal Shock ResistanceDT (0C)Quenching200 – 250_____25 – 100
Thermal ConductivityW/m-K @ R.T.ASTM C408241.981.46
Coefficient of Linear Thermal Expansion10-6/0CASTM C372   
Coefficient of Linear Thermal Expansionmm/m-0C (-250C through £ 10000C)ASTM C3728.393.66.3 – 9.7
Specific HeatCal/g-0C @ R.T.ASTM C3510.160.200.19
Dielectric Constant1MHz @ R.T.ASTM D150_______5.36.03
Dielectric Strength (60 cycles AC avg. RMS) .025 Thick .050 ThickVolts/milASTM D149   
Dielectric StrengthkV/mmASTM D116________0.140
Electrical ResistivityWcm @ R.T.ASTM D18297 x 10-31014>1017
Properties UnitsTest

Mullite

Corning Pyrex (7740)Fused Silica Dynasil 4000
Chemical Formula  3Al2O3-SiO2Borosilicate GlassSiO2
Densityg/cm3ASTM C202.802.232.20
Color  TanWhite/ TransparentWhite/ Transparent
Crystal Structure  OrthorhombicRandom 
Water Absorption% @ R.T.ASTM C3730.00.00.0
HardnessMoh’s 8———7
HardnessRockwell   600 kg/mm2
Hardnessknoop kg/mm2Knoop 100G1450418 
Compressive StrengthMPa @ R.T.ASTM C773551N/A 
Compressive StrengthM(106) lbs/in2   (103) lbs/in 161
Tensile StrengthMPa @ R.T.ACMA Test #4103.5N/A 
Elastic Modulus106psiASTM C848   
Modulus Of Elasticity

(Young’s Mod.)

GpaASTM C84815064745 x 103 kg/cm2
Flexural StrengthK(103) lbs/in2   25
Flexural Strength

(MOR)

MPa @ R.T.ASTM F41717069 
Poisson’s Ratio ASTM C8180.250.200.17
Poisson’s RatioASTM C848   
Fracture ToughnessMPa @ m1/2Notched beam Test2.00.77 
Max use Temperature

(* denotes inert atm)

oCNo Load Cond.17004901200
Thermal Shock ResistanceDT (0C)Quenching300100 
Thermal ConductivityW/m-K @ R.T.ASTM C4083.51.1 
Coefficient of Linear Thermal Expansion10-6/0CASTM C372  0.55 20-3200C
Coefficient of Linear Thermal Expansionmm/m-0C (-250C through £ 10000C)ASTM C3725.33.25 Through 3000C 
Specific HeatCal/g-0C @ R.T.ASTM C3510.230.180.177
Dielectric Constant1MHz @ R.T.ASTM D1506.04.63.826
Dielectric Strength (60 cycles AC avg. RMS) .025 Thick .050 ThickVolts/milASTM D149   
Dielectric StrengthkV/mmASTM D1169.80.55000c (150-200) kv/cm
Electrical ResistivityWcm @ R.T.ASTM D182910138 x 1010 
Properties UnitsTestQuartz GE 124SapphireSilicon
Chemical Formula  SiO2a-Al2O3Si
Densityg/cm3ASTM C202.213.972.33
Color  White/ TransparentWhite/ TransparentGray
Crystal Structure  HexagonalTrigonalCubic
Water Absorption% @ R.T.ASTM C3730.00.00.0
HardnessMoh’s 797
HardnessRockwell    
Hardnessknoop kg/mm2Knoop 100G>60022001150
Compressive StrengthMPa @ R.T.ASTM C773650 – 11002000120
Compressive StrengthM(106) lbs/in2    
Tensile StrengthMPa @ R.T.ACMA Test #448250 – 400113
Elastic Modulus106psiASTM C848   
Modulus Of Elasticity

(Young’s Mod.)

GpaASTM C84870250 – 400112
Flexural StrengthK(103) lbs/in2    
Flexural Strength

(MOR)

MPa @ R.T.ASTM F41780760 – 1035~300
Poisson’s Ratio ASTM C8180.170.290.28
Poisson’s RatioASTM C848   
Fracture ToughnessMPa @ m1/2Notched beam Test______1.893.0 – 6.0
Max use Temperature

(* denotes inert atm)

oCNo Load Cond.1200~20001350
Thermal Shock ResistanceDT (0C)Quenching>1400200____
Thermal ConductivityW/m-K @ R.T.ASTM C4081.440125
Coefficient of Linear Thermal Expansion10-6/0CASTM C372   
Coefficient of Linear Thermal Expansionmm/m-0C (-250C through £ 10000C)ASTM C3720.457.9 – 8.82.49 – 4.44
Specific HeatCal/g-0C @ R.T.ASTM C3510.160.180.18
Dielectric Constant1MHz @ R.T.ASTM D1503.89.3 – 11.411.8
Dielectric Strength (60 cycles AC avg. RMS) .025 Thick .050 ThickVolts/milASTM D149   
Dielectric StrengthkV/mmASTM D11625 – 4015 – 50____
Electrical ResistivityWcm @ R.T.ASTM D18296 x 1010101710-3
Properties UnitsTestSilicon CarbideSilicon Nitride Hot PressedSteatite L-5
Chemical Formula  a-SiCSi3N4H2Mg3-(SiO3)4
Densityg/cm3ASTM C203.213.312.71
Color  Dark GrayDark GrayBuff
Crystal Structure  HexagonalHexagonal ( a & b )Hexagonal
Water Absorption% @ R.T.ASTM C3730.00.00.0 – 0.02
HardnessMoh’s 9 – 1097.5
HardnessRockwell    
Hardnessknoop kg/mm2Knoop 100G28002200______
Compressive StrengthMPa @ R.T.ASTM C7731725 – 2500689 – 2760621
Compressive StrengthM(106) lbs/in2    
Tensile StrengthMPa @ R.T.ACMA Test #4310360 – 43462
Elastic Modulus106psiASTM C848   
Modulus Of Elasticity

(Young’s Mod.)

GpaASTM C848476317138
Flexural StrengthK(103) lbs/in2    
Flexural Strength

(MOR)

MPa @ R.T.ASTM F417324679 – 896140
Poisson’s Ratio ASTM C8180.190.23______
Poisson’s RatioASTM C848   
Fracture ToughnessMPa @ m1/2Notched beam Test4.05.0 – 8.0______
Max use Temperature

(* denotes inert atm)

oCNo Load Cond.140015001425
Thermal Shock ResistanceDT (0C)Quenching350 – 500750190
Thermal ConductivityW/m-K @ R.T.ASTM C40841272.9
Coefficient of Linear Thermal Expansion10-6/0CASTM C372   
Coefficient of Linear Thermal Expansionmm/m-0C (-250C through £ 10000C)ASTM C3725.123.47.0
Specific HeatCal/g-0C @ R.T.ASTM C3510.150.170.22
Dielectric Constant1MHz @ R.T.ASTM D15010.27.06.3
Dielectric Strength (60 cycles AC avg. RMS) .025 Thick .050 ThickVolts/milASTM D149   
Dielectric StrengthkV/mmASTM D116_____17.79.3
Electrical ResistivityWcm @ R.T.ASTM D18291081013104
Properties UnitsTestBoron NitrideZirconia

(TZP)

Chemical Formula  BNZrO2

Densityg/cm3ASTM C202.286.04
Color  WhiteWhite
Crystal Structure  HexagonalTetragonal
Water Absorption% @ R.T.ASTM C3730.00.0
HardnessMoh’s 6.56.5
HardnessRockwell 2 
Hardnessknoop kg/mm2Knoop 100G25-2051600
Compressive StrengthMPa @ R.T.ASTM C77323.52500
Compressive StrengthM(106) lbs/in2   
Tensile StrengthMPa @ R.T.ACMA Test #42.41 (10000C)248
Elastic Modulus106psiASTM C848  
Modulus Of Elasticity

(Young’s Mod.)

GpaASTM C848675207
Flexural StrengthK(103) lbs/in2   
Flexural Strength

(MOR)

MPa @ R.T.ASTM F41751.8900
Poisson’s Ratio ASTM C8180.050.32
Poisson’s RatioASTM C848  
Fracture ToughnessMPa @ m1/2Notched beam Test2.613.0
Max use Temperature

(* denotes inert atm)

oCNo Load Cond.985500
Thermal Shock ResistanceDT (0C)Quenching>1500280 – 360
Thermal ConductivityW/m-K @ R.T.ASTM C408202.7
Coefficient of Linear Thermal Expansion10-6/0CASTM C372  
Coefficient of Linear Thermal Expansionmm/m-0C (-250C through £ 10000C)ASTM C3721.0 – 2.011.0
Specific HeatCal/g-0C @ R.T.ASTM C3510.190.10
Dielectric Constant1MHz @ R.T.ASTM D1504.0826 @ 100kHz
Dielectric Strength (60 cycles AC avg. RMS) .025 Thick .050 ThickVolts/milASTM D149  
Dielectric StrengthkV/mmASTM D1163749.0
Electrical ResistivityWcm @ R.T.ASTM D18291013>1013