The text of this standard , whick exists in thress equivalent versions has been drawn up under the responsibility of AECMA and has been circulated to Official Services. Any reservations expressed by Official Services and not resolved in this issue, have been incorporated in the history sheet which has accompanied this prEN to CEN.
AECMA PREN 4097-1997 history
1997AECMA PREN 4097-1997 Aerospace Series Heat Resisting Alloy NI-CD1401 (NiCo10W10Cr9Al6Ta3) Vacuum Melted Precipitation Treated Precision Castings Edition P 1