What must steel be properly identified for?

Steel must be properly identified primarily to ensure conformity to the ordered grade. This is crucial because different grades of steel possess distinct chemical compositions, mechanical properties, and characteristics that make them suitable for specific applications in construction and manufacturing. Using the correct steel grade ensures that the material will meet the intended strength, durability, and safety requirements for the project. Identifying steel grades accurately is also essential for compliance with industry standards and regulations, which often dictate the specific grades required for varying structural applications.

While color coding, weight classification, and structural aesthetics may play a role in certain contexts, they do not have the same fundamental importance as confirming that the steel meets the specified grade. Color coding might help in identifying different types of steel but is not a primary requirement. Weight classification could be relevant for certain logistics or handling scenarios, but it is not as critical in determining the suitability of the steel for its intended purpose. Structural aesthetics, while important in design, do not affect the material's performance or compliance in the same way that proper grade identification does.