Withstanding heavy loads
High tensile strength
Excellent surface finishes
Stress corrosion cracking and crevice corrosion resistance
AISI 441 stainless steel is a ferritic stainless steel formulated for primary forming into wrought products. It is typically furnished in the annealed (O) condition. 441 is the AISI designation for this material. 1.4509 is the EN numeric designation. S44100 is the UNS number. Additionally, the EN chemical designation is X2CrTiNb18.
It is a ferritic stainless steel which provides good high-temperature strength (exceeding that of Types 409 and 439 Stainless Steels) plus good corrosion resistance in many exhaust gas environments (equivalent to Type 439 and 18 Cr-Cb Stainless Steels). Ferritic steels are not inherently strong at elevated temperatures, but columbium additions coupled with appropriate solution annealing markedly improve long-time creep rupture strength. Type 441 is dual stabilized with niobium and titanium to provide good weld ductility and resistance to intergranular corrosion in the weld heat affected zone.
|SS 441||0.03 max.||1.00 max.||0.04 max.||0.03 max.||1.00 max.||17.5 -19.5||1.00 max.||0.03 max.||0.10 – 0.50||0.30 + 9xC min., 0.90 max.|
|UTS Ksi.(Mpa)||0.2% Yield Strength Ksi.(Mpa)||Elongation % in 2″ (50.8 mm)||Rockwell Hardness|
|71 (490)||45 (310)||32||B78|