Back (Fe-Base)

1.4509 | X2CrTiNb18

Numeric designation1.4509 | AISI 441 | S43940
Chemical designationX2CrTiNb18
EtchingV2A-Beize @ 70 °C

This ferritic chromium steel is very corrosion resistant; especially to SCC (stress corrosion cracking) due to the ferritic microstructure.