What is the difference between 409 and 410 stainless steel:
409—except for the addition of titanium, the cheapest model, usually used as a car exhaust pipe, is a ferritic stainless steel (chrome steel), suitable for welding, low cost, steam locomotive exhaust pipe, and fire row
410—Martensite (high-strength chrome steel), good wear resistance and poor corrosion resistance, suitable for pumping. Its chemical composition contains 13% chromium, 0.15% or less carbon and a small amount of other elemental alloys. The raw material is cheaper, magnetic, and hardenable by heat treatment. General uses include bearings, medical appliances and tools and appliance panels, and tensile parts.
410 430 430F 430LX stainless steel
410 stainless steel is equivalent to China’s 1Cr13 stainless steel S41000 (American AISI, ASTM). 0.01% carbon, 0.13% chromium 0.1 410 stainless steel: good corrosion resistance, machinability, general purpose blades, valves.
Heat treatment of 410 stainless steel: solution treatment (°C) 800-9000 slow cooling or 750 fast cooling
430 stainless steel has good corrosion resistance and general steel grade, thermal conductivity is better than austenite, thermal expansion coefficient is smaller than austenite, heat fatigue, adding stabilizing element titanium, and the mechanical properties of the weld site are good. For building decoration, fuel burner parts, household appliances, home appliances parts.
The 430F is a grade of steel with a free-cutting property on 430 steel. Used in automatic lathes, bolts and nuts.
430LX adds Ti or Nb to 430 steel, lowers C content, and improves processability and weldability. Used in hot water tanks, hot water systems, sanitary appliances, household durable appliances, bicycle flywheels, etc.