CeramTec SL 200 BG

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Silicon Nitride SL 200 BG in the Forming Process:

  • Gas-pressure sintered Si3N4 SL 200 BG advanced ceramics
  • High mechanical strength
  • High fracture toughness and impact resistance
  • Excellent wear resistance
  • Good thermal conductivity
  • Very low thermal expansion
  • Thermal shock resistance

  • This material data has been provided by CeramTec.

    "Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
    All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
    Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

    Ashby charts



    PropertyValueTesting StandardComment

    Relative density

    3.2 [-]

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    PropertyValueTesting StandardComment

    Flexural strength

    800 MPa

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    EN DIN 843-1

    min. | 4-point bending 20/40 mm | spacing 46x4x3 mm specimen size | ground surface 20°C

    Weibull modulus

    16 [-]

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    Technological properties

    Application areas

    Wear-optimized Solutions and Tools for Wire Drawing, Tube Forming and Forming Systems

    Forming tools are subject to extreme stress and high levels of wear. Technical ceramics are far superior to other materials in these conditions. CeramTec ceramic tools deliver enhanced performance and increased economy in every step of the metal forming process. When forming metals – either in casting, rolling, tube drawing, bending or widening – the tools that are used are subject to tremendous forces and stress. Depending on the material used, these tools can suffer extreme wear. This is why the forming process is yet another field where advanced ceramics from CeramTec offer convincing proof of their strengths.

    The microstructure consists of elongated crystals that interlock into micro-rods. One application where this combination of properties has proven particularly useful is the machining of gray cast iron or cast iron with ceramic inserts.

    Unlike hard metals or other cutting materials, machining processes can be performed with ceramic inserts at maximum speed without the use of cooling lubricants. The combination of good tribological properties and excellent fracture toughness makes silicon nitride ceramics predestined for applications as balls and rolling elements for light and extremely precise bearings, heavy-duty ceramic forming tools and automotive components subject to high stress. And the good thermal shock resistance and high temperature resistance is exploited in welding processes.

    IG/MAG Gas Nozzles made of Silicon Nitride Ceramics

    Long, precise MIG/MAG Welding with Ceramic Gas Nozzles

    Ceramic gas nozzles made of silicon nitride from CeramTec are far less susceptible than steel nozzles to the high stress levels placed on them during the welding process. The surface of the ceramic material prevents welding drops from adhering to it and reduces slag formation.

    In MIG/MAG welding applications, for instance when welding thin-walled metals in vehicle body construction, it is essential to ensure a perfect weld seam along with an even, uniform flow of gas. To achieve a constant flow of gas from the nozzle, the nozzle opening used on the robot arm must remain clean at all times. MIG/MAG gas nozzles made of silicon nitride ceramics make this possible: They show virtually no traces of deposits or adhesion of metal spray or slag, thus ensuring long service life and precision in MIG/MAG welding. The smooth surface and wear resistance of silicon nitride ceramics ensures lasting, high-quality weld joints. This means ceramic gas nozzles made from this material require less frequent cleaning and replacement: Depending on their positioning, CeramTec ceramic gas nozzles made of silicon nitride SL200BG material optimized for welding applications offer a service life many times that of steel or hard chrome-plated copper. This reduces the machine downtime required for replacing these elements – something that has been proven during over three years of use of CeramTec silicon nitride ceramic gas nozzles in the automotive industry.

    MIG/MAG Gas Nozzles made of Silicon Nitride Ceramics

  • Virtually no traces of deposits or adhesion (metal spray or slag)
  • Service life many times that of gas nozzles made of steel or hard chrome-plated copper
  • No cold welds
  • Extreme hardness
  • High thermal shock resistance
  • Electrical insulation
  • Temperature resistance
  • High tensile strength
  • High compressive strength