about 440c stainless steel grade 440c
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Stainless Steel Grade 440C (UNS S44004) Grade 440C stainless steel is a high carbon martensitic stainless steel. It has high strength, moderate corrosion resistance, and good hardness and wear resistance. The following datasheet gives an overview of grade 440C stainless steel. Chemical Composition. The chemical composition of grade 440C stainless steel is outlined in the following table. 440C - Wikipedia 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 5860 HRC. It is a bearing steel, and used in rolling contact stainless bearings, e.g. ball bearings and roller bearings.
Heat treatment of 440c stainless steel. 440c stainless steel is martensitic, which implies that it is hardenable by heat treatment. The general goal of the heat treatment of 440c stainless steel is to limit, as much as possible, the amount of austenite in the steel and promote the creation of martensite . 440C Stainless Steel | Stainless Steel Special Alloy 440C AISI 440C is a high-carbon chromium steel designed to provide stainless properties with maximum hardness. It has been used primarily as a bearing steel, and is used in the hardened plus tempered condition. When heat-treated, Type 440C attains the highest hardness of any stainless steel (about Rockwell C 60). 440C Stainless Steel - Penn Stainless Grade 440C stainless steel is a high carbon martensitic stainless steel. It has high strength, moderate corrosion resistance, and good hardness and wear resistance. Grade 440C is capable of attaining, after heat treatment, the highest strength, hardness and wear resistance of all the stainless alloys.
Advantages of 440C stainless steel for knife blades The Machinery's Handbook states this about 440C stainless steel: "This steel has the greatest quenched hardness and wear resistance upon heat treatment of any corrosion-resistant or heat-resistant steel." 440C is a highly corrosion-resistant tool steel. It has a long and proven history of about 440c stainless steel grade 440c
The yield strength of Q690D steel plate is 690 Mpa and the impact temperature is - 20°C. about 440c stainless steel grade 440c, Q690D steel plate has high strength, good plasticity and toughness, good weldability and good cold and hot performance. Q690D steel plate is mainly used to manufacture various large engineering structural components and construction machinery. Because of its high strength and good toughness, Q690D steel plate can reduce the self weight of components and meet the requirements of large-scale and lightweight engineering components and equipment under the condition of ensuring strength, stiffness and reliability.