The CE certificate of Shaanxi Jinyou Metal Technology Co., Ltd. has come out. We sincerely seek cooperation with countries around the world. If you need this certificate, please contact me. (Cherry@jinyoumetal.com/WhatsApp: +86 13373795593).
1.1 Ferritic Stainless Steel This stainless steel has a matrix composed primarily of ferrite (α phase) with a body-centered cubic crystal structure. It is magnetic and generally cannot be hardened by heat treatment, but can be slightly strengthened by cold working. It contains 11-30% Cr, and may contain small amounts of Mo, Nb, and Ti. It is essentially Ni-free. It offers high strength and excellent resistance to chloride stress corrosion, pitting, and crevice corrosion, but is sensitive to intergranular corrosion and has poor low-temperature toughness. Key grades include 06Cr13Al, 10Cr17, 10Cr17Mo, 008Cr27Mo, and 008Cr30Mo2.
Structural steels include 4130, 4140, 4340, 300M, and Hy-Tuf, primarily used in front and rear landing gear. Stainless steels include 301, 302, 303, 321, 17-4PH, and 17-7PH, primarily used in engine nacelles, pylons, and thrust reversers, with smaller amounts also found in various parts of the fuselage.
Because both ferrite and retained austenite are resistant to corrosion, they appear white under a microscope, making them often confusing without careful observation.
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