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Above 10,000 per ton: both fabricators and end users start to cooperate in R&D to find new materials. The industry and/or government thought to revise some standards.
At that level, (between 8,000 and 10,000 per ton,(Copper is at 9,437.50 per ton now.) he not-so-easy types of substitution start taking place; and advanced companies (Tesla, VW, Siemens AG) consider undertaking fundamental research to develop new materials
Between 5,000 and 8,000 per ton, R&D initiatives tart but end users and manufacturers hesitate to put the to commercial production.
Under 5,000 and 8,000 per ton: Little substitution takes place, only normal changes due to the technology and performance improvements
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