48123006 - Arcair 3/4-Inch Thick Carbon Backing Plate and Heat Sink (12x6)

Industrial Grade Carbon Plate for Welding and Fabrication

The Arcair 48123006 3/4 x 12 x 6 Carbon Plate is a versatile consumable designed for heavy-duty industrial applications. Manufactured by Arcair, the world leader in air carbon-arc technologies, this solid block of carbon-graphite composite is engineered to withstand extreme thermal shock and high electrical currents. Unlike standard gouging electrodes, this plate is typically utilized for structural support and thermal management during complex welding procedures.

One of the primary uses for a carbon plate of these dimensions (3/4-inch thick, 12 inches long, and 6 inches wide) is as a weld backing material. When welding open roots or bridging wide gaps, placing this carbon plate behind the joint helps contain the molten pool, shaping the root bead and preventing blow-through. The carbon material does not fuse with the weld metal, allowing for a clean separation once the weld has cooled. This ensures structural integrity without the need for permanent metal backing strips that become part of the assembly.

Beyond backing, this plate serves as an excellent heat sink. Its high thermal conductivity allows it to draw heat away from sensitive areas of the workpiece, reducing distortion and preventing metallurgical damage to adjacent components. It is also easily machinable, allowing fabricators to cut, groove, or shape the plate into custom dams, molds, or plugs for specific repair jobs. Whether used for creating containment barriers for molten metal or as a protective shield, the Arcair 48123006 delivers the consistent quality and durability professionals expect from the Arcair brand.

Key Applications

• Weld Backing: Supports the weld puddle for full penetration joints without burn-through.
• Heat Dissipation: Acts as a heat sink to minimize warping and protect heat-sensitive zones.
• Damming & Molding: Can be shaped to contain molten metal during casting repairs or build-up operations.
• Protective Shielding: Blocks spatter and arc flash from damaging surrounding equipment.