Richards Thermocouple Cat17 Brn

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Ceramic Tubes - Silicon Carbide, Silicon Carbide Isopressed

Silicon Carbide - Oxide Bonded Silicon Carbide ( SC) protection tubes have a maximum service temperature of 2730°F (1500°C) . Silicon Carbide tubes are not gas tight. They are about 14% porous. Silicon Carbide also has good thermal shock and corrosion resistance. It also has excellent thermal conductivity. Because of this they are best used as a secondary protection tube to protect Mullite or Alumina primary tubes from direct flame impingement. Silicon carbide tubes are also frequently used in oxygen atmosphere furnaces and molten non-ferrous metals such as Aluminum, since they are very resistant to oxidation and slag attack. Composition: 89.6% Silicon Carbide (Black, coarse grained Alpha / Beta mix), 8.5% Silicon Dioxide, .7% Aluminum Oxide, .7% Iron Oxide. Silicon Carbide - Nitride Bonded Nitride bonded silicon carbide tubes ( SCN ) have the same characteristics as oxide bonded silicon carbide with a few exceptions. The have a maximum service temperature of 2800°F (1500°C ) . Nitride bonded tubes are more dense and less porous than oxide bonded tubes. They also have slightly better thermal shock, corrosion resistance, and twice the crushing strength of the oxide bonded tubes. Composition: 75.0% Silicon Carbide (Black, coarse grained Alpha / Beta mix), 23.4% Silicon Nitride, .5% Silicon Dioxide, . 3% Aluminum Oxide, .3% Iron Oxide. Note: A SCP-24 weighs: approximately 3.7 Lbs. Each additional 6 inches up or down adds or subtracts approximately 1 Lb.

Note: A SCNP-24 weighs: approximately 3.5 Lbs. Each additional 6 inches up or down adds or subtracts approximately 1 Lb.

Part

Inches

Millimeters

Number

Mounting

Figure

O.D. I.D. O.D.

I.D.

1

*

SCP-*

Plain Tube

1 3/4

1

44.5

25.4

SCNP-*

Bushing 2” NPT x 3/4” FNPT Cement on the tube

2

*

SCB-*

1 3/4

1

44.5

25.4

SCNB-*

*

3

Collar 3” O.D. x 1” wide

SCC-*

1 3/4

1

44.5

25.4

SCNC-*

Coupling 1 1/4” FNPT 1 1/4” FNPT 1 1/2” FNPT 1 1/2” FNPT

4

*

SCCP20-*

1 3/4

1

44.5

25.4

SCNCP20-*

SCCP24-*

Fitting 3/4” NPT female held by three

5

SCF-*

1 3/4

1

44.5

25.4

SCNF-*

Reversed Bushing 2” Male NPT (cemented)

6

SCRB-*

1 3/4

1

44.5

25.4

SCNRB-*

* Add the required length in the part number. Multiples of 6” (152.4 mm) starting at 12” (304.8) are considered stocked.

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