The latest flat-rolled steels from AK Steel have it in for bacteria and mold spores. Thanks to an ionic-silver and ceramic coating from AgION Technologies (Wakefield, MA), the steels meet the Environmental Protection Agency standards for an antimicrobial agent, according to AK applications engineer Eric Welte. AK can apply the AgION material to both carbon and stainless steels, using either a liquid or a powder coating process. The thickness of the coating varies from 0.2 to 2 mils, depending on abrasion requirements. "You can still see the polish of stainless steel through the thinnest of the coatings," Welte notes. The new steels target HVAC, appliance, food equipment, and medical applications. AK is even building a concept house from the material to show how it keeps mold at bay. What's more, Electrolux's Fridgidaire brand will use the antimicrobial steels in a new line of stainless steel consumer appliances. AK Steel : Enter 515
Stainless beefs up solenoids
The latest stainless steel alloy from Carpenter Technology goes into corrosive operating environments that can spell trouble for solenoids. Carpenter Chrome Core 29 Solenoid Quality Stainless stacks up favorably against Type 430FR stainless. The two materials have similar magnetic properties—including high resistivity—but Chrome Core 29 outshines Type 430FR when it comes to corrosion resistance. In corrosion tests (ASTM G150), Chrome Core 29 exhibited a critical pitting temperature of 14.8C, compared to 5C for Type 430FR. As for magnetic properties, the new alloy offers a saturation flux density of 13.2 kG, coercive field strength of 1.26 Oe, residual induction of 5.20 kG, and a maximum permeability of 1,624. In its annealed condition, Chrome Core 29 has a tensile strength of 586 MPa, a yield strength of 379 MPa, and a Rockwell B hardness of 85. Carpenter Technology Corp. : Enter 516
Say good-bye to beryllium in mold making
For mold-making applications that can benefit from the cooling power of copper, but can do without beryllium, Ampco Metal Inc. has developed a new copper alloy. Called MoldMATE 90, the material features a high thermal conductivity of 90 Btu/ft/hr/°F, better than the 60 Btu/ft/hr/°F offered by a beryllium copper grade (2% Be) commonly used in mold making. At the same time, MoldMATE 90 has enough nickel in it to meet the hardness and mechanical properties that tooling components require. Ampco Metal Inc. : Enter 517
Samsung's Galaxy line of smartphones used to fare quite well in the repairability department, but last year's flagship S5 model took a tumble, scoring a meh-inducing 5/10. Will the newly redesigned S6 lead us back into star-studded territory, or will we sink further into the depths of a repairability black hole?
In 2003, the world contained just over 500 million Internet-connected devices. By 2010, this figure had risen to 12.5 billion connected objects, almost six devices per individual with access to the Internet. Now, as we move into 2015, the number of connected 'things' is expected to reach 25 billion, ultimately edging toward 50 billion by the end of the decade.
NASA engineer Brian Trease studied abroad in Japan as a high school student and used to fold fast-food wrappers into cranes using origami techniques he learned in library books. Inspired by this, he began to imagine that origami could be applied to building spacecraft components, particularly solar panels that could one day send solar power from space to be used on earth.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.