Sintered Silicon Nitride (Si3N4 )

Material: Sintered Silicon Nitride (Si3N4 )
Composition: Si3N4
Property Minimum Value (S.I.) Maximum Value (S.I.) Units (S.I.) Minimum Value (Imp.) Maximum Value (Imp.) Units (Imp.)
Atomic Volume (average) 0.0058 0.006 m3/kmol 353.938 366.142 in3/kmol
Density 3.21 3.28 Mg/m3 200.394 204.764 lb/ft3
Energy Content 150 200 MJ/kg 16250.8 21667.7 kcal/lb
Bulk Modulus 197.99 208 GPa 28.716 30.1678 106 psi
Compressive Strength 3449.9 4833.1 MPa 500.366 700.982 ksi
Ductility 0.00139 0.00153 0.00139 0.00153 NULL
Elastic Limit 345 483.3 MPa 50.038 70.0967 ksi
Endurance Limit 330.75 385.88 MPa 47.9712 55.9671 ksi
Fracture Toughness 4 6 MPa.m1/2 3.64019 5.46028 ksi.in1/2
Hardness 15230 16800 MPa 2208.93 2436.64 ksi
Loss Coefficient 2e-005 5e-005 2e-005 5e-005 NULL
Modulus of Rupture 414 682 MPa 60.0456 98.9157 ksi
Poisson's Ratio 0.26 0.27 0.26 0.27 NULL
Shear Modulus 107.54 112.9 GPa 15.5974 16.3748 106 psi
Tensile Strength 345 483.3 MPa 50.038 70.0967 ksi
Young's Modulus 273.1 287 GPa 39.6098 41.6258 106 psi
Glass Temperature K °F
Latent Heat of Fusion 1380 1550 kJ/kg 593.29 666.377 BTU/lb
Maximum Service Temperature 1493 1553 K 2227.73 2335.73 °F
Melting Point 2661 2769 K 4330.13 4524.53 °F
Minimum Service Temperature 0 0 K -459.67 -459.67 °F
Specific Heat 882 918 J/kg.K 0.682543 0.710402 BTU/lb.F
Thermal Conductivity 14.4 26 W/m.K 26.9573 48.6729 BTU.ft/h.ft2.F
Thermal Expansion 3.2 3.3 10-6/K 5.76 5.94 10-6/°F
Breakdown Potential 15 20 MV/m 381 508 V/mil
Dielectric Constant 9.5 10.5 9.5 10.5 NULL
Resistivity 3.16e+016 1e+018 10-8 ohm.m 3.16e+016 1e+018 10-8 ohm.m
Environmental Properties
  Resistance Factors
1=Poor 5=Excellent
Flammability 5
Fresh Water 5
Organic Solvents 5
Oxidation at 500C 5
Sea Water 5
Strong Acid 4
Strong Alkalis 3
UV 5
Wear 5
Weak Acid 5
Weak Alkalis 5

This data is provided subject to AZoM.com's terms and conditions. Data reproduced with permission of Granta Design Limited www.grantadesign.com and Ceram Research Limited www.ceram.co.uk

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