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PRODUCT DATA of AISI 904L
MaterialAISI 904L
General Information904L stainless steel is a non-stabilized austenitic stainless steel with low carbon content
Chemical CompositionFe, <0.02% C, 19-23% Cr, 23-28% Ni, 4-5% Mo, <2.0% Mn, <1.0% Si, <0.045% P, <0.035% S, 1.0-2.0% Cu
EXPERIENCE IN PRACTICE
Development StatusCommercial Product
Equivalent Designations1.4539, X1NiCrMoCuN25-20-5, BS904S13
Space ExperienceLimited
PHYSICAL PROPERTIES
Crystal StructureFace centered cubic (fcc)
Specific Gravity7.9
ELASTIC PROPERTIES
Tensile Modulus190 GPa
THERMAL PROPERTIES
Temperature RangeThe structural stability of this grade collapses at high temperatures, particularly above 400°C.
Thermal Conductivity11.5 W/m.K
Thermal Expansion Coefficient15 μstrain/°C
Specific Heat0.45 J/g.K
RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY
General Corrosion StatusImproved corrosion resistance as compare to 316L.
Corrosion/ThermalGood oxidation resistance
WeldingCan be performed using all conventional methods. Does not require pre-heat and post-weld heat treatments