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PRODUCT DATA of AISI 316L
MaterialAISI 316L
Product DatasheetAK steel 316_316L_Data_Sheet
Aubert Duval 316L_X18MBC
General InformationLow-carbon modification of Type 316 for welded construction
Effects of Space environmentThe natural oxide layer is not repaired in vacuum when damaged. Cold welding might occur in contact to similar materials.
Chemical Composition12% Ni, 17% Cr, 2.5% Mo, 2% Mn, 1% Si, 0.03% C max, Rem. Fe
Name of ManufacturerMany European suppliers.
EXPERIENCE IN PRACTICE
Development StatusCommercial Product
Cost RangeLow
Lot ReproducibilityGood
Equivalent DesignationsISO 4954 X2CrNiMo17133E, UNS S31603, 1.4404, 1.4432, 1.4435, A4,AISI316L
Space ExperienceGood
PHYSICAL PROPERTIES
Crystal StructureFace centered cubic (fcc)
Specific Gravity7.95
Magnetic PropertiesNonmagnetic
ELASTIC PROPERTIES
Tensile Modulus199 GPa
Shear Modulus79 GPa
Poisson Ratio0.26
ELECTRICAL PROPERTIES
Electrical Volume Resistivity7.4e-7 ohm.m @ RT
THERMAL PROPERTIES
Thermal Conductivity15.8 W/m.K @RT
Thermal Expansion Coefficient17.2 μstrain/°C
Remark:RT to 200°C
Melting Range1370 to 1400 °C
Specific Heat0.5 J/g.K
RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY
General Corrosion StatusNo specific corrosion protection required
Stress Corrosion StatusHigh Resistance to SCC: Table 1
Remark: acc. to ECSS-Q-ST-70-36C
Data Quality: Design Data
EMF vs SCE-0.07 V
Remark: Measured in 3.5% NaCl solution
Data Quality: Design Data
Bimetallic CorrosionCan be connected without any restriction to: Cr, Au, Pt, C, Rh, Ag, Gun-metal, P-bronzes, Sn-bronzes, Ti+alloys
Can be connected in a non-controlled environment to the above and Cd, Cu, Brasses, Ni, monel, inconel, N-Mo alloys, 400 series stainless steel
Can be connected in a clean room environment to above and Al-Cu alloys, Cu-Ni alloys, Al-bronzes, Si-bronzes
Needs specific measures: All others
Test:ECSS-Q-ST-70C Rev.1 Table 5.1
Data Quality: Design Data
FLUID SYSTEMS COMPATIBILITY
Gaseous Oxygen (GOX)Meets the mechanical impact requirements. No batch test required.
Liquid Oxygen (LOX)Meets the mechanical impact requirements. No batch test required.
Nitrogen Tetroxide (N2O4)SCC susceptibility is low and no fluid decomposition
Hydrazine (HDZE)SCC susceptibility is low and no fluid decomposition
SPECIAL RECOMMENDATIONS
Special RecommendationsAISI 316L is the low carbon version of AISI 316 (0.08 %C) which may be susceptible to intergranular corrosion in certain corrosive media after it is welded or otherwise heated at temperatures between 430 and 860°C. · For welded applications avoid the unstabilised, higher carbon, versions