• Low carbon steels:
Steels having carbon percentage of 0.1% to 0.3% are employed by aircraft industry for safety wires, fasteners, bushings for cables, pipe clamps and threaded solid tie rods.
• Medium carbon steels:
Having a carbon content of 0.3% to 0.5%, this type of steel is highly suitable for machining connecting rods and light forgings with sufficient surface hardness.
• High carbon steels:
Thanks to the high carbon content of 0.5% to 1.05%, this type of steel enjoys very high hardness after heat treatment. But it has very less application in the aircraft industry, except for flat and coil springs.
• Nickel steels:
As nickel steels present an excellent opportunity to achieve high hardness without much effect on ductility, they are widely used as fasteners, pins, and keys.
• Chromium steels:
Many times, heat treated forgings with ultra high strength and toughness superior to carbon steel is necessary for ball bearings in aircraft, and what can be a better choice other than chromium steels? It fits the bill perfectly!
• Stainless steels:
With strong anticorrosion properties even in aggressive process conditions, SS makes a strong candidate for many applications in the aircraft industry. Also with excellent workability, it can be rolled, drawn, formed, or bent to any shape using proper tools.
o Fuel tanks and cabin components:
With high suitability for mild environments of chlorine percentage less 200 ppm, SS 304 and SS 316 are the perfect solutions. Remember it is possible to withstand very high temperature using the derivatives of these highly popular stainless steel variants.
o Exhaust components and high-temperature engine parts:
As high-temperature service and oxidation prevention requirement propels the need for variants other than SS 304 and 316, the steel industry presented the variants ASTM S30415, ASTM S30815, AISI 309, and 310 that can withstand up to 1150oC.