III.18High-strength nickel alloys

– Having any of the following:(i) A 'stress-rupture life' of 10.000 hours or longer at 923 K (650 °C) at a stress of 676 MPa; or(ii) A 'low cycle fatigue life' of 10.000 cycles or more at 823 K (550 °C) at a maximum stress of 1.095 MPa;– Where: 'stress-rupture life' is measured in accordance with ASTM standard E-139 or national equivalents; 'low cycle fatigue life' is measured in accordance with ASTM standard E-606 or national equivalents.– Not of a kind used for coating substrates.– The nickel metal content is a higher percentage by weight than that of any other element present in the alloy.– Made from metal alloy powder or particulate material, from the composition system: nickel alloys (Ni-Al-X, Ni-X-Al) qualified for turbine engine parts or components, with less than 3 non-metallic particles (introduced during the manufacturing process) larger than 100 μm in 10⁹ alloy particles, where X is one or more alloy spare parts.