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PRODUCT DATA of AISI 416
MaterialAISI 416
General InformationMartensitic stainless steel
PrecautionsAvoid tempering between 371oC and 593oC , because of reduced resistance to stress corrosion and increased notch sensitivity
Chemical CompositionFe-13Cr-0.15S-0.15C
PHYSICAL PROPERTIES
Crystal StructureFace centered cubic (fcc)
Magnetic PropertiesFerromagnetic
RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY
General Corrosion StatusNo specific corrosion protection required
Corrosion/ThermalOxidation resistance is good up to 650C.
Atmospheric CorrosionCorrosion resistance is sufficient for most applications, but is inferior to the 300 series stainless steels. This stainless steel type is slightly less corrosion resistant than types 403 and 410
Stress Corrosion StatusModerate Resistance to SCC: Table 2
Remark:Tempering between 371oC and 593oC shall be avoided because corrosion and stress corrosion cracking resistance is lowered. Requires Stress corrosion evaluation form
Data Quality: Design Data
EMF vs SCE-0.17 V
Remark: Measured in 3.5% NaCl solution. Passive condition
Data Quality: Design Data
Bimetallic CorrosionCan be connected without any restriction to: Cr, Au, Ag, Gun-metal, P-bronzes, Sn-bronzes, Ti+alloys, Ni, Monel, Inconel, Ni/Mo alloys
Can be connected in a non-controlled environment to the above and Cd, austenitic cast iron, Cu, Brasses, Al-bronzes, Si-bronzes, Au, Pt, C, Rh, Sn-Pb alloys, Sn, Pb, 300 series stainless steels
Can be connected in a clean room environment to above and Al-Cu alloys
Needs specific measures: All others
Test:ECSS-Q-ST-70C Rev.1 Table 5.1
Data Quality: Design Data