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Methodology guide -- CN 7225 (flat-rolled alloy steel, ≥600mm)
CN 7225 is the alloy-steel cousin of CN 7208 -- adds silicon, manganese, chromium, vanadium for specific industrial applications. Chinese mills are the dominant non-EU source.
Step 1 -- verify alloy content and route. Alloy steel is BF-BOF dominated; emissions are 1.9-2.2 t/t direct. Silicon-electrical steel for transformers is a high-value sub-category with growing verification practice -- ask first.
Step 2 -- handle automotive HSLA carefully. Automotive supply chains are increasingly demanding low-carbon steel for ESG reporting. Some mills (POSCO, Tata Steel UK) offer "green steel" verified-data programs at a premium. Worth investigating for high-volume automotive imports.
Step 3 -- understand grade-specific allocation. A mill running multiple alloy grades on the same line must allocate emissions per Reg. 2025/2621 Article 7. The complexity favours suppliers with grade-segregated production over multi-grade plants.