EX12B0000001250T00 - Exocor Cobalt 12 TIG Hardfacing Rod - 1/8" - 10lb Tube

Exocor Cobalt 12 TIG Welding Rod (ERCoCr-B)

The Exocor Cobalt 12 TIG Welding Rod is a premium hardfacing consumable designed for industrial applications requiring exceptional resistance to abrasion, heat, and corrosion. Classified under AWS A5.21 as ERCoCr-B, this cobalt-chromium-tungsten alloy provides an intermediate hardness profile, bridging the gap between the tougher Cobalt 6 and the harder Cobalt 1. With a typical hardness range of 46-50 HRC, it is engineered to withstand severe sliding abrasion and erosion while maintaining its mechanical properties at elevated temperatures.

This 1/8-inch (3.2mm) diameter rod is supplied in 10lb tubes, ensuring ample material for substantial surfacing projects. The Cobalt 12 alloy is particularly effective in environments where metal-to-metal friction and high heat are prevalent. Its microstructure contains a higher volume of carbides compared to Cobalt 6, which enhances its wear resistance without sacrificing all impact toughness. This makes it a preferred choice for surfacing components that must endure cutting actions or high-pressure sliding contact.

Fabricators and maintenance engineers rely on Exocor Cobalt 12 for its excellent weldability and consistent deposit quality. The rod produces a smooth, defect-free weld bead when used with 100% Argon shielding gas and DCEN polarity. It is highly resistant to galling and seizing, which is critical for moving parts such as valve stems and pump shafts. Furthermore, the alloy exhibits outstanding corrosion resistance, making it suitable for use in chemical processing equipment and other corrosive environments.

Key Technical Specifications:

• AWS Classification: ERCoCr-B
• Nominal Hardness: 46-50 HRC
• Alloy Type: Cobalt-Chromium-Tungsten
• Heat Resistance: Retains hardness up to red heat
• Corrosion Resistance: Excellent against oxidation and chemical attack

Whether used for original equipment manufacturing or maintenance and repair operations (MRO), the Exocor Cobalt 12 TIG rod delivers reliable performance. It is commonly utilized in the lumber industry for saw tipping, in the automotive and power generation sectors for valve seating, and in general heavy industry for extending the service life of wear-prone components.