After the Alloy from the Heraeus problems fine scale happened at the workpiece, it was found that the Alloy 2 type with Composition. Different is, H-330 have Si Ga as main component and H-925 have In Ga,,Sn is the main element, the results showed that the Alloy appropriate to use in solving problems Copper oxide its surface of workpiece money, causing the black ceiling The red ceiling is H-925 because solved workpiece than both in the story.Porosity blemish blemish and black red and also saves the Cost available more than H-330 because no Slag of Si loss in the process of casting. H-330
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