Alloy G-30 (UNS N06030) is a Ni-Cr-Fe corrosion-resistant alloy with alloying additions of molibdenum, tungsten, copper and niobium. Generally resistant to oxidizing environments, it's extremely resistant to phosphoric acid (P2O5) and thus used widely in the production of agrichemical fertilizers. It can be seen as a low-carbon variant of alloy G, with improved weldability (it's less prone to heat-affected zome carbide precipitation and hot-cracking), and ductility.Used in phosphoric acid plants, sulphuric acid service, nitric acid service, pickling operations, petrochemical operations, fertilizer manufacture, pesticide manufacture, gold extraction and nuclear waste processing.
Steel plates are divided into thin steel plates <4 mm (the thinnest is 0.2 mm), medium and thick steel plates 4~60 mm, and extra thick steel plates 60~115 mm according to thickness. Steel plates are divided into hot rolling and cold rolling according to rolling. The width of thin plates is 500~1500 mm; the width of thick plates is 600~3000 mm. Thin plates are divided into ordinary steel, high-quality steel, alloy steel, spring steel, stainless steel, tool steel, heat-resistant steel, bearing steel, silicon steel and industrial pure iron thin plates according to steel types; according to professional uses, there are plates for oil drums, enamel plates, bulletproof plates, etc.; according to surface coatings, there are galvanized thin plates, tinned thin plates, lead-plated thin plates, plastic composite steel plates, etc.