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PRODUCT DATA of AISI 403
MaterialAISI 403
General InformationMartensitic Stainless Steel
Chemical Composition11.5-13Cr, 0.15C, rem Fe
PHYSICAL PROPERTIES
Crystal StructureFace centered cubic (fcc)
Specific Gravity7.7 to 8.03
Magnetic PropertiesFerromagnetic
THERMAL PROPERTIES
Thermal Conductivity24.9 W/m.K
Thermal Expansion Coefficient9.9 μstrain/°C
RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY
General Corrosion StatusNo specific corrosion protection required
Corrosion/ThermalCorrosion resistance is sufficient for most applications, but is inferior to the 300 series stainless steels
Stress Corrosion StatusModerate Resistance to SCC: Table 2
Remark:Requires Stress corrosion evaluation form
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