XX.938,MCT.093.36 - 938 D2 Tool Steel Repair TIG Rod - 3/32" - 10lb Tube

Precision Repair for High-Carbon Tool Steels

The 938 Metalcore TIG Rod is a premium specialty filler metal engineered specifically for the maintenance, repair, and fabrication of AISI D2 tool steel and similar high-carbon, high-chromium air-hardening alloys. In the demanding world of tool and die manufacturing, matching the base metal's properties is non-negotiable. This rod utilizes a metal-cored manufacturing process, which allows for a highly specific alloy formulation that might be difficult or impossible to draw as a solid wire. The result is a deposit that mirrors the microstructure of D2 steel, ensuring that repairs are not just cosmetic but structural and functional.

When welding on air-hardening tool steels, the risk of cracking and the need for post-weld heat treatment are significant concerns. The 938 alloy is designed to be compatible with the thermal cycles inherent in processing these steels. It provides a weld deposit that is fully heat-treatable, capable of achieving hardness levels in the range of 55-60 HRC, depending on the heat treatment cycle and dilution. This makes it the ideal choice for repairing chipped cutting edges, worn forming surfaces, and cracked dies where the repaired area must withstand the same abrasive forces and impact loads as the original tool.

Packaged in a 10lb tube, these 3/32" (2.4mm) rods offer the welder excellent control for fine detail work. The diameter is substantial enough for building up larger worn sections while still allowing for precise manipulation in tight corners or on delicate edges. The metal-cored structure also contributes to a smooth, stable arc with excellent wetting action, reducing the likelihood of lack of fusion defects which can be catastrophic in high-stress tooling applications.

Technical Specifications:

• Alloy Type: High Carbon, High Chrome (D2 Equivalent)
• Diameter: 0.093" (3/32")
• Packaging: 10lb resealable tube
• Hardness: Heat treatable to 55-60 HRC