What is AISI 440C?
AISI 440C steel is characterized by good corrosion resistance in mild domestic and industrial environments, including fresh water, organic materials, mild acids, various petroleum products, coupled with extreme high strength, hardness and wear resistance when in the hardened and tempered condition.
What type of material is 440C?
440C stainless steel
Grade 440C stainless steel is a high carbon martensitic stainless steel. It has high strength, moderate corrosion resistance, and good hardness and wear resistance.
What is the hardness of 440C?
C 60
Grade 440C is capable of attaining, after heat treatment, the highest strength, hardness (Rockwell C 60) and wear resistance of all the stainless alloys.
What is the difference between 440B and 440C?
440B has a higher hardness and toughness than 440A and 440C for cutting tools, measuring tools, bearings and valves. The 440C has the highest hardness of all stainless steel and heat resistant steel for high quality cutting tools, nozzles and bearings. 440F is a free-cutting steel and mainly used in automatic lathes.
IS 440C weldable?
Grade 440C stainless steel is not welded because it can be easily air hardened. To weld this alloy, it should be preheated to 260°C (500°F) and post weld treated at 732-760°C (1350-1400°F) for 6 h followed by slowly cooling in the furnace to prevent cracking.
What does 440 mean in stainless steel?
440C (UNS designation S44004) is a martensitic 400 series stainless steel, and is the highest carbon content from 400 stainless steel series. It is usually heat treated to reach hardness of 58–60 HRC. It is a bearing steel, and used in rolling contact stainless bearings, e.g. ball bearings and roller bearings.
What is 440A steel?
440A is a high carbon martensitic stainless steel that is AOD melted. It has slightly less carbon than 440B and 440C giving it better machinability but less hardness. The combination of good wear resistance and high hardness makes this alloy an excellent candidate for cutting tools and knife blades.
Is 440B steel good?
Grade 440B stainless steel is a high carbon martensitic stainless steel containing good strength, moderate corrosion resistance and ability to obtain and maintain wear resistance and excellent resistance.
What is the quality of D2 steel?
D2 steel is air hardened and contains between 10% and 13% chromium (which is unusually high). D2 steel has a hardness in the range of 55 to 62 HRC, which makes is a very durable and high- end knife steel. D2 steel will retain its hardness up to a temperature of 425 °C (797 °F).
