Stress-rupture life should be measured in accordance with ASTM standard E-139 or national equivalents.

Stress-rupture life should be measured in accordance with ASTM standard E-139 or national equivalents.

A stress-rupture life of 10,000 hours or longer at 923 K (650°C) at a stress of 676 MPa; or

A stress-rupture life of 10,000 hours or longer at 1,073 K (800°C) at a stress of 400 MPa; or

A stress-rupture life of 10,000 hours or longer at 723 K (450°C) at a stress of 200 MPa; or

A stress-rupture life of 10,000 hours or longer at 923 K (650°C) at a stress of 676 MPa; or

A stress-rupture life of 10,000 hours or longer at 1,073 K (800°C) at a stress of 400 MPa; or

Gas turbine blades, vanes or tip shrouds made from directionally solidified (DS) or single crystal (SC) alloys having (in the 001 Miller Index Direction) a stress-rupture life exceeding 400 hours at 1,273 K (1,000° C) at a stress of 200 MPa, based on the average property values;

Gas turbine blades, vanes or tip shrouds made from directionally solidified (DS) or single crystal (SC) alloys having (in the 001 Miller Index Direction) a stress-rupture life exceeding 400 hours at 1,273 K (1,000°C) at a stress of 200 MPa, based on the average property values;