Material Numbers vs G3

M Numbers: Quick lookup of base metal weldability grouping numbers (Material Numbers) for welding procedure and performance qualification. Data is provided by C-spec from the master source used for generation, proof-reading and maintenance of AWS B2.1 Table C.1 and C.2.

If you calculate heat input in the field, you already know the problem. Online calculators are awkward on a job site, spreadsheets are easy to break, and manual calculations take time you do not have during an active inspection. G3 is a purpose-built heat input calculator for welding inspectors and quality-control professionals. Enter the voltage, amperage and travel distance. Start the built-in arc timer when the arc strikes and stop it when the pass is complete. G3 calculates the heat input and travel speed immediately, with a live readout throughout the pass. Built by a working inspector and designed for real field conditions. BUILT FOR • CSA W178.2 and CWB welding inspectors • AWS Certified Welding Inspectors • CSWIP welding inspectors • API 510, 570, 653 and 1169 inspectors • Oil and gas, pipeline and pressure-vessel inspection • Structural fabrication and shipyard quality control • Welding supervisors, coordinators and quality personnel CORE FEATURES • Built-in arc timer—start when the arc strikes and stop when the pass ends • Live heat-input and travel-speed calculations • Root, Hot Pass, Fill and Cap pass selection • Record multiple passes within the same weld • Metric and imperial calculations • Heat input displayed in kJ/mm or J/in • Save weld records and review previous inspection entries • Export professional PDF heat-input reports • Core calculator works offline in remote field locations • No profile required to use the core calculator • Free to use SMARTARC INTEGRATION Registered users can access SmartArc through the G3 Control Hub. SmartArc is designed to connect with the G3 digital bridge-cam gauge and bring measurement data directly into the inspection workflow. A free G3 profile is required to access SmartArc, saved inspection records and connected-gauge features. BUILT FOR THE FIELD. READY FOR WHAT COMES NEXT. G3 is the foundation of a growing quality-control documentation platform. Planned development includes expanded job histories, welder profiles, credential-specific documentation and deeper integration with SmartArc inspection hardware. The core heat-input calculator will remain free. WHAT INSPECTORS ARE SAYING “Best heat input calculator ever. After using a number of heat input calculators in the field, I stumbled across G3. What a blessing in the field—usable offline, able to add welders for future projects, and the ability to speak to the developers to make suggestions. It’s the all-in-one tool needed for the inspection realm.” — 5-star App Store review, Canada