Estimate theoretical zinc coating mass, practical zinc requirement, coating volume and zinc cost from steel surface area and galvanizing coating thickness.
How do I calculate zinc consumption for galvanizing? Multiply steel surface area by zinc coating thickness and zinc density to obtain theoretical coating mass, then divide by the estimated process utilization.
How much zinc is in an 85 µm coating? At pure zinc density of approximately 7.14 g/cm³, an 85 µm coating contains about 606.9 g/m² theoretically.
Why is actual zinc consumption higher? Not all zinc introduced into the galvanizing process becomes part of the finished coating. Drainage, dross, ash and other process losses can increase consumption.
What zinc density should I use? A commonly used value for pure zinc is approximately 7.14 g/cm³. Use your required material specification if a different basis is appropriate.
Can this calculate zinc cost? Yes. Enter the zinc purchase price in USD/kg and the calculator estimates material cost from the practical zinc requirement.
Does coating thickness directly determine zinc mass? For a fixed area and density, yes. Theoretical coating mass is directly proportional to coating thickness.
Is this the same as zinc bath consumption? No. It is an estimate of process zinc requirement using an entered utilization factor. Actual bath inventory and replenishment depend on plant operations and losses.