Capacity
Normal ability to produce steel in a given period. This rating should include maintenance requirements, but because such service is scheduled to match the machinery’s needs (not the calendar’s), a mill might run at more than 100% of capacity one month and then fall well below rated capacity as maintenance is performed. Engineered capacity. The theorectical volume of a mill, given its constraints of raw material supply and normal working speed “True” Capacity. Volume at full utilization, allowing for the maintenance of equipment and reflecting current material constraints. (Bottlenecks of supply and distribution can change over time – capacity will expand or reduce.)
