Hydrogen-Based Steelmaking: Pioneering a Green Revolution in Heavy Industry
The global steel industry, responsible for 7–11% of annual carbon dioxide emissions, faces unprecedented pressure to decarbonize[1][2]. Amid growing climate commitments, hydrogen-based steelmaking has emerged as a transformative solution, offering a pathway to near-zero emissions while maintaining industrial competitiveness. This article explores the technology’s mechanics, benefits, challenges, and real-world applications reshaping one of humanity’s oldest […]
Heat-resisting Steels
Aero engine valves, furnace conveyers, retorts, oil cracking units and gas turbines, need a wide variance of state entailing heat and corrosion under both static and dynamic stresses. Three necessary properties in material used at elevated temperatures: Retention of strength at the working temperature Resistance to oxidation and to scaling. Structural stability as regards carbide […]
General Requirements for Rolled Steel Plates, Shapes, Sheet Piling, and Bars for Structural Use
Covering common requirements or specified in the material specification, apply to roll steel plates, shapes, sheet piling, and bars, is this group of ASTM standard specifications ASTM Designation Title of Specification A 36/A 36M Structural Steel A 131/A 131 M Structural Steel for Ships A 242/A 242 M High-Strength Low-Alloy Structural Steel A 283/A 283 […]
Forging
Forging the oldest method of metal forming, and it was the first of the indirect compression-type process. It involves the application of a compressive stress, which exceeds the flow stress of the metal. Factors as whether ease and cheapness of deformation, production of certain mechanical properties or surface finish is the overriding factor to choice […]
Factors Influencing Steelwork Prices
There is a wide range of factors that power tender prices for structural steelwork. In general the factors are either ���commercial��� or "technical���. Best practice guidance is given below on the key factors, together with information on ���lead times���, erection times and typical prices. Commercial Factors The following are profitable factors that should be considered […]
Material Elements, Compositions and Properties of Forged Steel for Barber and Styling Scissors
Material Elements, Compositions and Properties of Forged Steel for Barber and Styling Scissors When you take iron and add a specific amount of carbon, you can then harden the iron. In other words, steel is hard enable carbonated iron. The degree of hard inability depends on the amount of carbon added to the mix. In […]
Classification of Stainless Steel
Martensitic( A solid solution of iron and up to 1 percent of carbon, the chief constituent of hardened carbon tool steels) stainless steels, ferritic stainless steels, austenitic stainless steels, duplex (ferritic-austenitic) stainless steels, and precipitation-hardening stainless steels, are the five groups of steel. Plate, sheet, strip, foil, bar, wire; semi-finished products, pipes, tubes, and tubing […]
Nickel and Nickel Alloys
Nickel is a versatile element and will alloy with most metals. Complete solid solubility exists between nickel and copper. Wide solubility ranges between iron, chromium, and nickel make possible many alloy combinations. Nickel has been used in alloys from dawn of civilization. And has made significant contributions to our present-day society and promises to continue […]
Molten Light Metal Processing-I
In the melting of commercial non-ferrous metals and alloys (aluminum, magnesium, copper, zinc, and lead), various additional molten metal processing steps are necessary other than melting and alloying. The historic practices of fluxing, metal refining deoxidation, degassing, and grain refining have been used, and they apply to virtually all nonferrous metal systems. In addition, molten […]
Melting and Pouring of the Reactive Metals
Traditional Titanium (Reactive metals) Casting A very reactive metal in the molten state, titanium must be melted and poured in a vacuum to yield a quality casting. Most titanium investment cast parts are made with the vacuum arc remelting (VAR) technique, which uses a vacuum arc furnace to melt a portion of a titanium electrode […]
