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I identified a process: "Brass die-casting, single route, at plant, die casting, from copper and zinc, primary production, 8.41- 8.86 g/cm3". I want to use this information for a specific mass (2000 kg), needed to produce 30 000 brass pieces
in openLCA by (120 points)

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In openLCA yes, you could export everything to excel and then make the changes there, or you could write the scaling formulas into openlca. But read up on some literature about upscaling lca numbers and make sure the multipliers are appropriate for your process.
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