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
Inforbix is leveraging its CAD and product data access technology to power up a free iPad app that lets mobile users search and access engineering data.
Unlike his friends in engineering programs, blogger Jon Titus had little need for calculus except in a few of his college physical-chemistry labs and classes.
In the wake of the Chevy Volt fire investigations, sales are down, and General Motors' (GM) CEO Dan Akerson is blaming the downturn on a spate of bad publicity.
Thanks to embedded electronics, medical devices are getting smaller and smarter than ever. Pacemakers and implantable defibrillators are now able to call physicians. MRIs, CT scanners, and ultrasound machines are gaining mobility. And the venerable Band-Aid may soon be able to detect illnesses ranging from fevers to heart arrhythmias. On February 21, join Design News senior editor Charles Murray for a wide-ranging discussion, "Embedded Angles for Medical Products," which will explore the latest developments in medical electronics. The discussion will examine advances in medical device technology and offer an inside look at the embedded electronics behind it.
To save this item to your list of favorite Design News content so you can find it later in your Profile page, click the "Save It" button next to the item.
If you found this interesting or useful, please use the links to the services below to share it with other readers. You will need a free account with each service to share an item via that service.
Tweet This
9 
