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Sic Crucibles

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Sic Crucibles, primarily made from silicon carbide, are widely used in industries where high temperatures and chemical resistance are crucial. These crucibles have become the go-to choice for foundries and laboratories due to their superior durability, making them essential for processes such as metal melting, casting, and refining.


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crucible silicon carbide

Introduction to Sic Crucibles

Physical and Chemical Properties of Sic Crucibles

When selecting crucibles for industrial applications, understanding the physical and chemical indexes is critical. Below is a breakdown of the key properties of ISO Type Sic Crucibles:

Physical Properties Index
Refractoriness ≥ 1650°C
Apparent Porosity ≤ 20%
Bulk Density ≥ 2.2 g/cm²
Crushing Strength ≥ 8.5 MPa
Chemical Composition Index
Carbon Content (C%) 20–30%
Silicon Carbide (SiC%) 50–60%
Alumina (AL2O3%) 3–5%

These characteristics give Sic Crucibles exceptional thermal conductivity, low thermal expansion, and resistance to chemical corrosion, ensuring that they perform efficiently in even the harshest environments.

Crucibles size 

No Model OD H ID BD
36 1050 715 720 620 300
37 1200 715 740 620 300
38 1300 715 800 640 440
39 1400 745 550 715 440
40 1510 740 900 640 360
41 1550 775 750 680 330
42 1560 775 750 684 320
43 1650 775 810 685 440
44 1800 780 900 690 440
45 1801 790 910 685 400
46 1950 830 750 735 440
47 2000 875 800 775 440
48 2001 870 680 765 440
49 2095 830 900 745 440
50 2096 880 750 780 440
51 2250 880 880 780 440
52 2300 880 1000 790 440
53 2700 900 1150 800 440
54 3000 1030 830 920 500
55 3500 1035 950 925 500
56 4000 1035 1050 925 500
57 4500 1040 1200 927 500
58 5000 1040 1320 930 500

Advantages of Sic Crucibles

  1. High-Temperature Resistance: Sic Crucibles withstand temperatures up to 1650°C, making them ideal for metal melting and other high-heat applications.
  2. Durability and Longevity: With a strong crushing strength of ≥ 8.5 MPa, these crucibles can endure the mechanical stresses involved in industrial settings without cracking or deforming.
  3. Chemical Stability: The high silicon carbide content (50-60%) offers excellent resistance to chemical reactions, ensuring longevity even when exposed to molten metals or aggressive chemicals.

Safe Handling and Maintenance of Sic Crucibles

To extend the lifespan of Sic Crucibles and ensure their safe operation, it is essential to follow a few maintenance guidelines:

  • Regular Cleaning: Crucibles should be cleaned regularly to remove any residue, preventing contamination and corrosion.
  • Avoid Thermal Shock: Gradual heating and cooling are essential to prevent cracking. Sudden temperature changes can cause the material to fracture.
  • Prevent Chemical Corrosion: Avoid exposure to corrosive chemicals, especially alkaline or acidic solutions, which can degrade the crucible’s structural integrity.

Practical Knowledge for Buyers

Choosing the right Sic Crucible depends on the specific needs of your industrial process. Consider factors such as temperature, material compatibility, and size requirements. In real-world applications, many buyers have reported a significant reduction in maintenance costs and increased production efficiency by switching to Sic Crucibles.

Sic Crucibles are an indispensable tool for industries that demand high-performance materials capable of withstanding extreme temperatures and chemical exposure. By understanding their properties and following proper maintenance protocols, businesses can enhance operational efficiency while reducing downtime.

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