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The Effect of Nearly Full Theoretical Density on Critical Performance for Stainless Steel Powder Metal
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Abstract
The effect of high density on critical performance properties for stainless steel powder metal (P/M) has been studied. Sinter-Hot Isostatic Pressing (HIP) cycles were optimized to yield stainless steel P/M samples with density levels of 94% to 98% of theoretical density. These samples were then tested for corrosion resistance, stress-rupture strength, tensile strength and toughness. Conventional-density stainless steel P/M samples and wrought samples, when possible, were tested simultaneously to provide a direct comparison.
The high density stainless steel P/M samples consistently perform better than those at conventional density levels and exhibit properties that are very close to those of wrought material.
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Citation
Clase, S. and Sanderow, H., "The Effect of Nearly Full Theoretical Density on Critical Performance for Stainless Steel Powder Metal," SAE Technical Paper 980312, 1998, https://doi.org/10.4271/980312.Also In
References
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- “Automotive Exhaust System Materials Comparator” Armco Inc. 1996
- Albee, T. dePoutiloff, P. Ramsey, G. Regan, G. “Enhanced Powder Metal Materials for Exhaust System Applications””
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- Rawlings, A. Kopech, H. Rutz, H. “The Effect of Severe Temperature on the Properties of Ferritic P/M Stainless Steel” MPIF International Conference on Powder Metallurgy & Particulate Materials Chicago, IL 1997