| All data is for information only------(<---links) | |
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| PRODUCT DATA of AISI 301 |
| Material | AISI 301 |
| Product Datasheet | 301_Data_Sheet |
| General Information | High 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. |
| Precautions | Type 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 environment | The natural oxide layer is not repaired in vacuum when damaged. Cold welding might occur in contact to similar materials. |
| Chemical Composition | 16-18Cr, 6-8Ni, <2Mn, <1Si, <0.15V, rem Fe |
| Name of Manufacturer | Many European suppliers. |
| EXPERIENCE IN PRACTICE |
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| Development Status | Commercial Product |
| Cost Range | Low |
| Lot Reproducibility | Good |
| Equivalent Designations | 1.4310, X12CrNi77, 301S21, Z12CN17-08, X12CrNi17-07, BS 801 Grade A; AISI301 |
| Space Experience | Good |
| PHYSICAL PROPERTIES |
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| Crystal Structure | Face centered cubic (fcc) |
| Specific Gravity | 7.91 |
| Phase changes | Heating or cold work may result in some transformation of austenite to ferrite (martensite) simultaneously with the precipitation of carbides |
| Magnetic Properties | Nonmagnetic |
| ELASTIC PROPERTIES |
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| Tensile Modulus | 193 GPa |
| Shear Modulus | 78 GPa |
| Poisson Ratio | 0.27 |
| ELECTRICAL PROPERTIES |
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| Electrical Volume Resistivity | 7.15e-7 ohm.m |
| THERMAL PROPERTIES |
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| Thermal Conductivity | 16.2 W/m.K |
| Thermal Expansion Coefficient | 16.6 μstrain/°C |
| Melting Range | 1400 to 1410 °C |
| Specific Heat | 0.456 J/g.K Remark: annealed specimens |
| RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY |
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| General Corrosion Status | No specific corrosion protection required |
| Corrosion/Thermal | Intergranular 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 Corrosion | General corrosion resistance like that of all austenitic stainless steels. |
| Stress Corrosion Status | High 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 Corrosion | Can 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 |
| Welding | This 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 |
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| 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 |