Sic/Silicon Carbide Ceramic Water Pump Mechanical Seals

Min.Order: 1

Product origin: Beijing, China

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US$ 5 ~ 500

Description

Silicon Carbide (SiC) is one of the most popular high performance tribo-materials, which has been commercially available for more than twenty-five years. Its features include:

· Excellent abrasion and wear resistance
· Excellent corrosion resistance
· Low coefficient of friction
· Low coefficient of thermal expansion
· High thermal conductivity
· Hardness greater than Tungsten Carbide

Different grades of Silicon Carbide are available as following:
· Reaction Bonded Silicon Carbide (RB SiC) - a very economical material which gives excellent wear characteristics, as well as good chemical resistance.
· Sintered Silicon Carbide (SSiC) - the absence of free silicon makes it most resistant to chemically-aggressive fluids, and ideal for high temperature applications.
· Graphite-Loaded Silicon Carbide - this is a composite of silicon carbide and free graphite. Graphite is added to RB SiC (RB SiC + C) or SSiC (SSiC + C), to improve tribological behavior by enhanced lubricity.

Parameter	Unit	RB SiC	SSiC
Density	g/cm³	3.0 - 3.05	3.1
Free Silicon Content	-	12%	-
Crystal Size	µm	8 - 20	5 - 7
Hardness	Rockwell	HRA 90	HRA 93
Compressive Strength	MPa	2700	3000
Flexural Strength	MPa	400	400
Fracture Toughness	MPa	4.3	4.5
Elastic Modulus	GPa	390	410
Poisson's Ratio	-	0.15	0.15
Coefficient of Thermal Expansion	1 x 10^-6 / K	4.3	4.3