Key Considerations in Material Selection: Economics, Environment, and Aesthetics
When selecting materials for construction and manufacturing, several factors must be considered, including economic impact, environmental considerations, market trends, political regulations, and aesthetic appeal. This analysis explores the relative costs of materials like stainless steel versus hot-rolled ASTM A36 plate, health hazards associated with different materials, and the challenges and opportunities in recycling metals, ceramics, and polymers. Understanding these dynamics is essential for making informed choices that align with project requirements and sustainability goals.
Key Considerations in Material Selection: Economics, Environment, and Aesthetics
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Presentation Transcript
Materials selection - some considerations Economics Environmental Political Market Aesthetics Material properties
Materials selection - material cost Relative cost - compared to that of hot rolled ASTM A36 plate (0.29C-1Mn-0.28Si) (unit wt. basis)
when drawing SS to rod need lubricant Materials selection - environmental Health hazards Recycling Metals particularly suited to recycling - can be easily sorted, remelted, & shaped Ceramics usually not recycled - many polymers are Composites difficult to recycle - difficult to separate fibers from matrix
Materials selection - political Who writes the specs for contract bids? Will they specify stainless steel rebar in roads & bridges?
vs …… Materials selection - market Carrera GT vs …… Kia
500 MPa P=50 Materials selection - properties log sf = log r + log P
500 MPa Materials selection - properties
