Advanced Metalworking Solutions for
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LC-100 Welding Consumables

Objective

Establish technical requirements, and verify and demonstrate performance of advanced MIL-100S, gas metal arc welding (GMAW) consumables. This will provide lower-cost welding for naval ship structures by allowing for wider operational envelopes (e.g. reduced or eliminated preheat, expanded range of energy input, and elimination of postweld heat controls) when welding high-strength steels (such as HY-80, HSLA-80, HY-100, or HSLA-100).

Technical Approach

Verification testing and metallurgical characterization of experimental advanced MIL-100S electrode compositions * Verification testing and metallurgical characterization of commercial-side heat of advanced MIL-100S electrodes * Production demonstration of commercial-side heat of advanced MIL-100S electrodes * New electrode specification and fabrication documents

Benefits

Cost avoidance of up to $13 million per aircraft carrier and $5 million per submarine with the certification of new MIL-100S, GMAW consumables. The new consumable will reduce preheat and post heat requirements and permits wider operational welding envelopes for fabrication of naval ships with high-strength steels.

Implementation

A Navy Working Group for the Development of Advanced High-Strength Steel Filler Metals consisting of Naval Sea Systems Command, Navy laboratories, private shipbuilders, welding consumable manufacturers, university researchers, and the National Center for Excellence in Metalworking Technology (NCEMT) has been assembled to transition the project results to the fabrication of New Attack Submarine (NSSN) and CVN 76 high-strength steel structures. Working Group activities, technical reports, and draft electrode specification and fabrication documents will be used to transition the technology to industry at large.

Status

Completed