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Tham khảo tài liệu 'steel structure design part 2', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | ŨGQ ttn aDO Sũ @ Steel 98 of Iron with Main Alloying Elements Carbon Silicon Manganese Copper and chromium added to increase corrosion resistant Rarely contains more than 0.25 of carbon Higher the carbon content the brittle the steel Grade 43 most common 50 and 55 strongest Design Grade - Thickness - Design Strength Hot Formed and Cold Formed Hollow Sections Oĩffi M noữ0ũũ Ductile at temperature above 10 degree C and more brittle as temperature falls below that. Performs badly in fires with strength decreases with rise in temperature. Fire protection is needed such as encasing steel member with concrete. Oĩffi M noữ0ũũ Exposed steelwork easily subjected to corrosion. For corrosion protection use Metallic coating - dipping in a bath of molten zinc in galvanizing process or - spray on coating of aluminium or zinc is used on the member Painting - primer of zinc chromate followed by coats of iron .
