Patent ID: 8197747
Filing Date: 2012-06-12
Classification: B23K,C22C

Abstract:
1. A nickel-based braze alloy composition comprising: Nickel as a base to the braze alloy; 4-20% chromium by weight; as melting point depressants a combination of 5-15% hafnium by weight, 5-25% cobalt by weight, 2-15% zirconium by weight and 3-7% titanium by weight, the melting point depressants being provided in quantities such that the braze alloy has a low melting temperature where the solidus temperature is of the order of or less than 1175° C.; and wherein the composition is substantially boron free such that if any boron is present the composition contains no boron as a melting point depressant and any boron is present only as trace element.