The images show wear maps for (a) treated and (b) nontreated 316 stainless steel. The T316 stainless steel was treated by low-temperature carburization.
Continue readingOne Minute Mentor: High-Temperature Nitriding for Deeper Case
High-temperature nitriding or solution nitriding at temperatures of 2010 ± 90°F is a new treatment available to produce cases with nitrogen concentrations in the range of 0.4 to 0.9 wt%, which is low compared to plasma nitriding treatments at low temperature (up to 16.9wt% N), but the resulting case is up to 100 times deeper (2 mm, or 0.08 in.).
Continue readingOne Minute Mentor: Secondary Hardening in Tool Steels
As shown schematically in the graph, high-temperature hardness is made possible only by a very important straightening mechanism: secondary hardening, promoted by the precipitation of fine alloy carbides.
Continue readingHeat treat 2015 finishes with a “bang!”
The ASM Heat Treating Society Conference and Exposition (Heat Treat 2015) took place in late October in Detroit. The three-day event, co-located with the American Gear Manufacturer’s Association Gear Expo, attracted over 7000 heat treating and gear professionals from all over the world, including an equipment exhibition featuring 202 companies in 288 booths.
Continue readingUltra 76 Plus tantalum alloy resists corrosion in hot concentrated acids
H.C. Starck, Newton, Mass., introduces the Ultra 76 Plus tantalum alloy, which is designed to combat aggressive hazardous-chemical corrosion in hot concentrated acids.
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