Aerospace

The environment of aerospace and aviation is harsh and corrosive, so stainless steel is widely used in aerospace and aviation industries. Most of the parts on the ruler and the ruler are made of stainless steel. In the aerospace industry, large liquid carrier rockets, high-intensity low-temperature pressure vessels and low-pressure fluid containers can be made of austenitic stainless steels 06Cr18Ni9, 12Cr17Ni7, 06Cr18Ni11Nb, 06Cr18Ni10Ti, 06Cr21Ni6Mn9N, etc.; exhaust passage around the engine, pre-fire fuel storage tank and high hardness Parts such as rods, claws, pins, etc. may be selected from martensitic stainless steels 12Cr13, 20Cr13, 14Cr17Ni2, and 102Cr17Mo (9Cr18Mo).

In the aviation industry, precipitation hardening stainless steels such as 04Cr13Ni8Mo2Al, 05Cr15Ni5CuNb, 05Cr17Ni4Cu4Nb, AM350, A-286, etc. are widely used in the aircraft mechanical system, and 05Cr15Ni5CuNb steel is used in the XB-70 large aircraft wing. Austenitic stainless steels such as 20Cr13Mn9Ni4 and 06Cr19Ni10NbN can be used in aero-engine exhaust manifolds, branch pipes, and turbo compressor hot air pipes. Cr-Ni doubles such as 12Cr21Ni5Ti can be used in aero-engine casings, engine front wall for combustion, and aircraft parts. Phase stainless steel replaces 12Cr18Ni9Ti austenitic stainless steel.