Shallow pitting/crevice corrosion in 1.4509 | X2CrTiNb18 | AISI 441 | S43940
Numeric designation | 1.4509 | AISI 441 | S43940 |
---|---|
Chemical designation | X2CrTiNb18 |
State | Shallow pitting/crevice corrosion |
Etching | V2A-Beize @ 70 °C |
This corrosion-resistant ferritic Cr-steel suffered shallow pitting or localized surface corrosion, triggered by high Cl and S contents in a crevice.