Thread Content
Grade Example of applications: ZL101 is suitable for processes such as sand casting, die casting, and investment casting, and is used to manufacture parts with complex shapes, thin walls, or those that require airtightness and can bear moderate loads, such as arms, brackets, hydraulic components, accessory housings, and instrument casings. ZL101A can be used for various casings, pump bodies, housings, etc. of aircraft engine components. ZL102 is used for parts with complex shapes, operating temperatures below 200 degrees, high gas-tightness requirements, and low load capacities, such as instrument housings, pistons, and brake casings. ZL104 is suitable for casting thin-walled parts with complex shapes using sand or metal molds; it is appropriate for manufacturing parts that are subject to moderate loads and operate at temperatures not exceeding 180 degrees, such as casings, frames, and cylinder blocks. ZL105 is suitable for casting various engine parts and accessories with complex shapes that must withstand moderate loads and operate at temperatures up to 250 degrees, such as cylinder components, casings, and oil pump housings. ZL108 and ZL109 are used for parts that operate at high temperatures (≤250 degrees), such as engine pistons. It can also be used when a low coefficient of thermal expansion, high strength, and high wear resistance are required. ZL111 is used for large components with complex shapes, high load requirements, and strict airtightness demands. ZL201 is suitable for manufacturing parts that are subject to high loads or operate at temperatures between 175 and 300 degrees, and whose shapes are not too complex; examples include aircraft mounting brackets and arms. ZL201A is used for high-strength castings that must withstand heavy loads, operate at temperatures up to 300 degrees, and have a moderate level of complexity; examples include beams, frames, ribs, and hubs. ZL203 is used for parts with simple shapes, which are subjected to moderate static and impact loads, operate at temperatures not exceeding 200 degrees, and require good machinability; examples include crankcases, brackets, and flywheel covers. ZL204A is a new type of alloy; its range of applications and operating conditions are similar to those of ZL201A, but it possesses higher strength properties, with its operating temperature limited to below 200 degrees. This alloy has been used to replace 2A14 in the manufacture of important components for missiles, and it can also be used for load-bearing components in aircraft, such as various beams and frames. The ZL205A T5 state is used for load-bearing components such as beams, frames, arms, and supports in missiles and aircraft, to reduce weight ； It can replace forged aluminum alloys such as 2A50, reducing labor time ； The T6 condition is used for parts subjected to heavy loads, and can replace 2A14 forgings. It can also replace medium-carbon steel for use in the horizontal axis of radars, etc ； T7 state alloys are used for load-bearing components operating in corrosive atmospheres, such as replacing 45 steel in the wheels of ultra-high voltage line conductors. ZL207 is used to manufacture parts that must operate at temperatures up to 400 degrees and require airtightness, such as aircraft air distributors and electric valve housings. It can replace copper or titanium alloys, thereby significantly reducing weight and costs. ZL301 is used for aircraft parts that require high corrosion resistance. ZL303 is used in situations where special corrosion resistance is needed (such as in seawater or other corrosive media), or when high operating temperatures (up to 200) are present. Such as some small components or decorative elements of seaplanes that do not carry much weight. ZL401 is used for die-cast parts of thin instrument casings, with an operating temperature that should not exceed 200 degrees. ZL402 is suitable for parts that need to withstand high static and impact loads but for which heat treatment is not feasible; it can also be used for parts that require resistance to corrosive substances and high dimensional stability, such as oxygen regulators used in high-altitude flights.