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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.
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What's New in Material Numbers
1.3
September 10, 2024
The API domain has changed. All APIs functionality is the same.
