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Master Alloy: H-640

Internal Heraeus Name: Master Alloy | H-640 | Heraeus Shop

Product Details

  • ID
    5094963
  • Color
    White  
  • Karat
    925Ag  
  • Application
    Casting  
  • Hardness
    52HV (925Ag)  
  • Casting Temperature
    1000-1020 (925Ag)  

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Benefits and Applications

Master alloy for the production of 925 ‰ sterling silver jewellery obtained by investment casting. The elements contained in this product ensure an extreme level of deoxidation after casting and a high surface quality, an enhanced tarnishing resistance, and excellent recyclability, making it suitable for castings with and without stones in place. The alloy can be heat treatable to increase its hardness afterward.