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Comparison of Notch Sensitivity and Stress Corrosion Cracking of a Low-Nickel Stainless Steel to 316LS and 22Cr-13Ni-5Mn Stainless Steels Pages: 14 Published: Jan 2003
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View License Agreement Source: STP1438-EB Abstract Recently, low-nickel stainless steels have been developed, in part due to concerns over patient hypersensitivity reactions. These alloys have been investigated and found to provide excellent mechanical and corrosion properties. This study compares the mechanical properties, notch sensitivity, and stress corrosion cracking (SCC) susceptibility of one such alloy, BioDur 108, to 316LS and 22Cr-13Ni-5Mn stainless steels which have a long successful implant history. BioDur 108 was found to have a tensile strength, yield strength, and notch tensile strength similar to 22Cr-13Ni-5Mn, and both had higher values of these properties as compared to 316LS. In addition, BioDur 108 had the largest percentage elongation during tensile testing of the three alloys but lower reduction of area than 316LS. No evidence of SCC mechanisms was revealed in either the test results or fracture analysis on any of the materials tested. With these material properties and its very low nickel content, BioDur 108 may be a useful alternative for certain medical implant applications.
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