NF L10-500-3*NF EN 2157-3:1993 Aerospace series. Steel. Forging stock and forgings. Technical specification. Part 3 : pre-production and production forgings.
1993NF L10-500-3*NF EN 2157-3:1993 Aerospace series. Steel. Forging stock and forgings. Technical specification. Part 3 : pre-production and production forgings.