SIC

SIC materials' properties

Manufacturer: Atlas Engineering group

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SIC materials' properties

Properties	R-SiC	S-SiC
porosity (%)	≤0.3	≤0.2
density (g/cm3)	3.05	3.1-3.15
hardness	110-125 (HS)	2800 (kg/mm2)
elastic modulus (Gpa)	≥400	≥410
SiC content (%)	≥85%	≥99%
Si content (%)	≤15%	0.1%
bend strength (Mpa)	≥350	450
compressive strength (kg/mm2)	≥2200	3900
coefficient of heat expansion (1/C)	4.5x10-6	4.3x10-6
heat resistance (in the atmosphere) (C)	1300	1600

Test environment: 125-300 hours of immerged testing, continuously stirred.

Test environment	Corrosive weight loss (mg/cm2yr)
concentration reagent (wt%)	temperature (C)	R-SiC	S-SiC
98% H2SO4	100	50	1.5
50%NaOH	100	1000	2.5
53%HF	100	7	0.2
85%H3PO4	100	8	0.2
70%HNO3	100	0.5	0.2
45%KOH	100	1000	0.2
25%HCL	100	0.9	0.2
10%HF plus 57%HNO3	25	1000	0.2

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