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Molybdenum disilicide (MoSi2) are resistance type heating elements made of a dense ceramic-metallic material which can produce furnace temperatures approaching 1800°C. Although more expensive than traditional metallic elements, MoSi2 elements are known for their longevity due in part to a protective quartz layer that forms on the surface of the element “hot zone” during operation.

Duralite MoSi2 elements are made to industry standard established resistance values, dimensions and geometries, and therefore are interchangeable with other manufacturers of molybdenum disilicide elements. The key difference between Duralite MoSi2 and other MoSi2 suppliers is that Duralite MoSi2 elements are exceptionally priced.

Duralite MoSi2 elements are graded in two maximum temperature ranges of 1700°C (3090°F) and 1800°C (3270°F). Elements are available in many shapes and forms (see examples shown below). Specifically, we offer the following MoSi2 styles: “U-shaped” (most common), “W-shaped”, and “Straight-shaped”, with or without right angle or oblique angle bends.

Each element is specified by a “hot zone” diameter (de) and length (Le), and a “cold zone” diameter (du) and length (Lu).

U-shaped

W-shaped

Examples of typical MoSi2 element configurations.

Benefits of MoSi2 elements include high temperature operation (in air), long element life and the ability in some cases to replace any failed elements hot.

Customers of Duralite MoSi2 elements enjoy two key added benefits – first, unparalleled price and second, experienced engineering support. Anyone can sell MoSi2, but knowing how to design the system is where Duralite excels. MoSi2 systems must be engineered for customer to get the best performance and optimum service life. Duralite engineers can assist in:

• analyzing the relationship between the furnace temperature, element temperature and the element surface load
• selecting the element surface load according to the furnace construction, atmosphere and operating temperature
• choosing the most suitable element size and style for your application
• designing a new furnace with MoSi2 or converting from gas or oil fired to a MoSi2 based electric heating system
• determining if one of our MoSi2 Power Pack systems (see below) can work for your application

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Duralite MoSi2 Element Accessories

Duralite stocks a full range of accessories for mounting and wiring MoSi2 elements including:

• support clamps
• braided aluminum straps
• power buss bars
• passage mounting bricks.

Duralite MoSi2 Power Pack Systems: Added Savings

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Duralite’s MoSi2 Power Pack system consists of a set of MoSi2 elements, power supply, temperature control panel, thermocouples, and buss power cables. Because we’ve packaged these products together, we can offer additional savings for our customers.

Each MoSi2 Power Pack is a complete electrical system that is matched to the unique power and control requirements of a MoSi2 system. MoSi2PowerPack systems are available in 208-240/460V single phase or three phase power supply configurations. The power supply output is matched to the specific MoSi2 element voltage and power requirements and has current limiting capability to protect the MoSi2 element system from overload.

The temperature control panel can be wall mounted for operator convenience. The temperature control has set point, ramping and multi-step programming features. A High Temperature Limit control is also included in the panel for over temperature protection. A 25 foot plug-in cable easily connects the temperature control to the power supply. Dual thermocouples, extension wire, power cables and straps are also provided to complete the installation.

Click here if you would like to request information about Duralite MoSi2 products, systems and accessories. Click here to order.