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PRODUCT DATA of AISI 301
MaterialAISI 301
Product Datasheet301_Data_Sheet
General InformationHigh work-hardening rate; applications requiring high strength and ductility. Type 301 is strengthened by cold working. If cold-worked Type 301 is subjected to temperatures above 480C, its room-temperature strength is reduced.
PrecautionsType 301 should not be used for extended periods at temperatures of 400 to 900C and should not be cooled slowly from higher temperatures through this range. Zinc and lead particles must be removed before heating to avoid embrittlement.
Effects of Space environmentThe natural oxide layer is not repaired in vacuum when damaged. Cold welding might occur in contact to similar materials.
Chemical Composition16-18Cr, 6-8Ni, <2Mn, <1Si, <0.15V, rem Fe
Name of ManufacturerMany European suppliers.
EXPERIENCE IN PRACTICE
Development StatusCommercial Product
Cost RangeLow
Lot ReproducibilityGood
Equivalent Designations1.4310, X12CrNi77, 301S21, Z12CN17-08, X12CrNi17-07, BS 801 Grade A; AISI301
Space ExperienceGood
PHYSICAL PROPERTIES
Crystal StructureFace centered cubic (fcc)
Specific Gravity7.91
Phase changesHeating or cold work may result in some transformation of austenite to ferrite (martensite) simultaneously with the precipitation of carbides
Magnetic PropertiesNonmagnetic
ELASTIC PROPERTIES
Tensile Modulus193 GPa
Shear Modulus78 GPa
Poisson Ratio0.27
ELECTRICAL PROPERTIES
Electrical Volume Resistivity7.15e-7 ohm.m
THERMAL PROPERTIES
Thermal Conductivity16.2 W/m.K
Thermal Expansion Coefficient16.6 μstrain/°C
Melting Range1400 to 1410 °C
Specific Heat0.456 J/g.K
Remark: annealed specimens
RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY
General Corrosion StatusNo specific corrosion protection required
Corrosion/ThermalIntergranular attack in corrosive media is pronounced if this steel is sensitized by slow cooling through or by exposure at temperatures between 400 and 900 C. Annealing will eliminate this sensitized condition.
Atmospheric CorrosionGeneral corrosion resistance like that of all austenitic stainless steels.
Stress Corrosion StatusHigh Resistance to SCC: Table 1
Data Quality: Design Data
EMF vs SCE-0.09 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
WeldingThis steel can be readily welded by all techniques, but the weld and heat affected zone becomes susceptible to intergranular corrosion, unless annealed after welding.
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