ED031120 - Lincore 55 Hardfacing Wire .045 25lb Spool

Technical Overview: Lincoln Electric Lincore® 55

The Lincoln Electric Lincore® 55 is a self-shielded, flux-cored (FCAW-S) wire designed specifically for hardfacing applications involving severe metal-to-metal rolling or sliding wear. This consumable produces a martensitic deposit containing some retained austenite, resulting in a deposit hardness range of 50-59 Rockwell C (RHC). The wire is formulated for open-arc welding, eliminating the need for external shielding gas, which simplifies field repairs and outdoor maintenance operations.

Engineered for versatility, Lincore 55 can be applied to carbon steel, low alloy steel, and manganese steel substrates. A key technical advantage of this alloy is its capability for unlimited deposit layers, provided that proper preheat and interpass temperature controls are maintained. This feature allows operators to rebuild significantly worn dimensions using a single consumable, rather than switching between buildup and capping wires. The deposit resists mild abrasion while excelling in high-pressure sliding friction environments.

The 0.045-inch (1.1 mm) diameter wire is supplied on a 25 lb (11.3 kg) steel spool. It is classified under EN ISO: T Fe2 and is manufactured to strict quality standards in the United States. Operators should observe specific preheat requirements: cold parts should be warmed to at least 75°F (25°C), while heavy sections or thick parts may require preheating between 300°F and 500°F (150°C - 260°C) to prevent cracking and ensure optimal deposit integrity.

Key Specifications

• Process: FCAW-S (Self-Shielded)
• Diameter: 0.045 inches
• Hardness: 50-59 RHC
• Deposit Structure: Martensitic with retained austenite
• Layer Capability: Unlimited (with process control)