The National Institute of Standards and Technology now offers a new compilation of chemical and physical data in the NIST Chemistry Webbook at webbook.nist.gov. The web edition contains thermochemical properties, infrared spectral data, vapor pressure data, and mass spectral data. Access is currently free and is part of the more than 50 databases available from NIST.
Most machine design engineers will survey existing component manufacturers for standard linear guide products, limiting what they can do with their designs. Using extruded aluminum profile guides can customize machine designs while shrinking the bill of materials.
Practically all electronic devices today contain metals that may
be coming from conflict-ravaged African countries. And political pressures will increasingly influence how these minerals are sourced and used in products.
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