What is the hardness of the aluminum rod after 7A04 anodizing?
2218 aircraft engine and diesel engine piston aircraft engine, cylinder head, jet engine and compressor impeller ring 2219 space rocket oxidizer tank welding, supersonic aircraft and parts, the working temperature is -270~300 degrees celsius. Good weldability, high fracture toughness, T8 state has high resistance to stress corrosion cracking, 2319, welding 2219 alloy electrode and filler solder, 2618 die forgings and free forgings. The piston and engine working temperature of 2A01 is less than or equal to 100 degrees Celsius structure rivet 2A02 working temperature is 200~300 degrees Celsius turbojet engine 2A06 axial compressor blade working temperature of 150~250 degrees Celsius, aircraft structure and working temperature of aircraft structures 125~250 degrees Celsius rivet 2A10 than 2A01 alloy with high strength, for structural parts, propeller blades, transportation and architectural structure of moderate intensity manufacturing working temperature is less than or equal to 100 degrees Celsius in the structure of the 2A11 aircraft aircraft rivet. Medium strength aircraft bolts and rivets 2A12 aircraft skin and frame, ribs and spars, rivets, construction and transportation structure of 2A14 complex shape free forging and die forging 2A16 working temperature of 250~300 degrees Celsius, aircraft and spacecraft parts, working at high temperature and room temperature welding container and sealed cabin 2A17 the working temperature of 225~250 Celsius at the end of the 2A50 aircraft parts of complex shape parts of medium strength 2A60 aircraft engine compressor wheel, wind wheel, fan, impeller and other 2A70 aircraft, aircraft engine piston, air guide wheel, wheel 2A80 aero engine compressor blade, impeller, piston, piston ring and other parts of the high temperature air 2A90 engine piston
