Mechanical Properties of Incoloy 908 — An Update

Incology alloy 908 data handbook

“…Density at 293 K 8.08 g/cm3 8.128 g/cm3 (Ledbetter, 1990) 8.1 13 g/cm3 (Ledbetter, 1990) Curie point: ferromagnetic-paramagnetic transition temperature (INCO Preliminary Data Sheet, 1993) Melting Point 1634-1683 K (Wyrick, 1993) MA = mill annealed (98OoC/1 hour); CW = cold worked; CD = cold drawn; T = transverse to rolling direction; L = longitudinal with respect to rolling direction MA = mill annealed; CW = cold worked; T = transverse; L = longitudinal; CD = cold drawn Most data shown above have been reported by Hwang et al (1992). The data for the material that was mill-annealed, 20% cold worked, and aged at 650°C for 180 hours represents the average from 7 tests at 4 Kelvins on 3 and 10 mm thick plate (Tobler, 1993).…”

“…Most data shown above have been reported by Hwang et al (1992). The 4 K data for the material that was mill-annealed, 20% cold worked, and aged at 650°C for 180 hours represent 7 tests on specimens cut from 3 mm (flat) and 10 mm (round) plate (Tobler, 1993).…”

“…Fracture Toughness (MPa mM) Condition: Limited GTA weld data from an MIT program and Hwang et al (1992) are included in the table. The strengths and toughnesses are very dependent on the composition of the weld filler.…”

“…Fatigue crack growth rate at 4 K for the mill annealed and aged condition. (Hwang, et al, 1992) Figure 10. Fatigue crack growth rate at 4 K for the mill annealed, 20% cold worked and aged condition.…”

Status of the KSTAR Project

“…Incoloy 908 is designed to match the thermal expansion coefficient of Nb 3 Sn strand 11,12) . The general micro-structure of Incoloy 908 is a single phase austenitic structure.…”