Home >> Silicon Carbide Seals >> Specifications of Silicon Carbide Seals

Specifications of Silicon Carbide Seals

Chinatungsten online can manufacture and supplie silicon carbide seal according to customers' requirments. Specifications of silicon carbide seals as following:

			Silicon Carbide
Material properties	Norm	Symbol/Unit	F	F plus	T
Density	DIN EN 623-2	ρ [g/cm3]	>3.10	>3.16	>3.21
Porosity	DIN EN 623-2	P [%]	<3.0	<1.0	<1.0
Mean grain size		[μm]	<5	<5	<2
Grain size distribution		[μm]
Phase composition			α-SiC	α-SiC	α-SiC, YAG
Vickers hardness	DIN EN 843-4	HV 1 [GPa]	25.5	25.5	22.5
Knoop hardness	DIN EN 843-4	HK 0.1 [GPa]	24.5	24.5	21.0
Young's modulus	DIN EN 843-2	E [GPa]	410	420	420
Weibull modulus	DIN EN 843-5	m	10	15	15
Flexural strength, 4-pt bending	DIN EN 843-1	σB [MPa]	400	510	550
Compressive strength		σD [MPa]	2200	2200	2500
Poisson ratio		ν	0.17	0.17	0.16
Fracture toughness (SENB)		Klc [MPa·m0,5]	4	4	6
Coefficient of thermal expansion	DIN EN 821-1
20°C - 500°C		α [10-6/K]	4.1	4.1	3.5
500°C - 1000°C		α [10-6/K]	5.2	5.2	5.2
Specific heat at 20°C	DIN EN 821-3	cp [J/g K]	0.6	0.6	0.6
Thermal conductivity at 20°C	DIN EN 821-2	λ [W/mK]	125	125	75
Thermal stress parameters	calculated
R1 = σB·(1-ν) / (α·E)		R1 [K]	198	246	314
R2 = R1·λ		R2 [W/mm]	25	31	24
Specific electrical resistance at 20°C	DIN EN 50359	ρ [Ω cm]	106-108	106-108	102-103

			Silicon Carbide
Material properties	Norm	Symbol/Unit	C	P	G
Density	DIN EN 623-2	ρ [g/cm3]	>3.10	>2.76- 2.89	>3.02
Porosity	DIN EN 623-2	P [%]	<3.0	10-14	<3.0
Mean grain size		[μm]	bimodal	<5	bimodal
Grain size distribution		[μm]	10-1500		10-1000
Phase composition			α-SiC	α-SiC	α-SiC, graphite
Vickers hardness	DIN EN 843-4	HV 1 [GPa]	25.5	23.5	24.5
Knoop hardness	DIN EN 843-4	HK 0.1 [GPa]	24.5	21.6	23.0
Young's modulus	DIN EN 843-2	E [GPa]	410	340	390
Weibull modulus	DIN EN 843-5	m	10	15	14
Flexural strength, 4-pt bending	DIN EN 843-1	σB [MPa]	400	225	230
Compressive strength		σD [MPa]	2500	2000	2500
Poisson ratio		ν	0.17	0.17	0.16
Fracture toughness (SENB)		Klc [MPa·m0,5]	3.5	3	3
Coefficient of thermal expansion	DIN EN 821-1
20°C - 500°C		α [10-6/K]	4.1	3.5	4.0
500°C - 1000°C		α [10-6/K]	5.2	5.6	5.0
Specific heat at 20°C	DIN EN 821-3	cp [J/g K]	0.6	0.6	0.6

More Info>>

1.Tungsten Carbide
2.Tungsten carbide Balls
3.Tungsten carbide Burrs
4.Tungsten Carbide Inserts
5.Tungsten Carbide Plates

CHINATUNGSTEN ONLINE has been specialized in manufacturing tungsten products, especially cemented carbide products for more than 20 years. If you have any inquires concerning the products in this website, please do not hesitate to e-mail us by : sales@chinatungsten.com