#news: #Israel just blew up two #steel mills in #Iran, a shift to extremely civilian targets
on 02026-04-03Ian McKay on “Outside Takes on Clean Energy”, linking to articles outside #Orca, including one on how lower #energy #pricing could make #aluminum cheaper than #steel #materials
on 02025-12-12archive of https://www.technologyreview.com/2025/03/12/1113130/green-steel-boston-metal/ #news from March about #Boston-Metal and their electrolytic #steel making process. #materials
on 02025-12-12#video from March of tapping molten iron off of #Boston-Metal’s molten oxide electrolysis cell for making #steel. #materials
on 02025-12-12“The increase in [CO₂] emissions in the [electric] power sector was offset by falling emissions from #steel, #cement and oil use, plus stagnating gas demand outside the power sector, meaning #China’s CO2 output in the third quarter was flat or slightly declined, relative to a year earlier.” Apparently they’ve been declining since February. #climate-change
on 02024-11-28latest #CREA #PDF slides on #China: “China #energy and emissions trends: November 2024 snapshot”. Astonishing: “Total power generation increased by 6.6%, while large-scale power generation grew by 2.1%, indicating most power generation growth comes from #solar and #wind installations that are outside of the industrial production statistics. (...) National Bureau of Statistics (NBS) underreports wind and solar generation, particularly from rooftop and smaller solar plants.” I think those figures are year-over-year rather than month-over-month because, on the same slide, they say, “solar power generation saw an increase of 46.2%.” Carbon emissions are said to have peaked in February 02024 despite #coal electric power generation growing 2.2% (in what I assume is year over year). Astoundingly: “After H1 2024 saw no new permits issued for coal-based steel plants, China issued a policy in August suspending all new #steel plant permits.” (Are they going to import their steel from India, or what?)
on 02024-11-27#video #toread about the last days of the Bethlehem #Steel basic oxygen furnace
on 02024-05-30explanation of Young’s modulus and where it arises from in #steel #materials
on 02021-09-17how to anneal mild #steel sheet #materials
on 02020-11-11Notes on tool #steel formulation, hardening, tempering by oxide interference color, temperature by incandescence color, Rockwell C hardness by tempering, etc., “from the perspective of a woodworker” #materials
on 02020-11-11