SUS440C

SUS440C stainless steel The steel is SUS440C martensite stainless steel body, the carbon content of steel than 3 cr13 high, so strength, hardness than 3 cr13 steel high. Other performance and 3 cr13 steel similar. But the weldability poor, do not usually be welding materials. Used in the manufacture of surgical medical tools. SUS440C Japan imported stainless steel used in the manufacture of corrosion in the environment and no lubrication strong oxidation in the bearing parts. The steel and good high temperature dimensional stability, can manufacture high temperature corrosion resistant bearing and temperature not more than 250 ℃ tool. 440 C: carbon content-1.2% of this steel C resist rust ability is good, is currently used in high-grade batch cutter market high quality stainless steel, and its intensity and sharp sex than 34-ATS, including chromium amount up to 16-18%, the second is the most commonly used stainless steel (after ATS-34), but also the first is for the sword of the potter accept stainless steel, steel, and have been very popular, especially in the process was developed below zero, this kind of treatment to strengthen the steel toughness. Special sex: high hardness and good wear resistance, in polishing, it is the defect is sticky is greater, and heating up quickly, but it is more easily than any carbon steel burnish, use to cut cut material also easier. The annealing temperature 440 C is very low, hardness is usually HRC56-to 58, corrosion resistance and toughness are strong, now more widely used in hand and the high quality system knife factory system tools. With the way: a 440 C than special steel hardened high hardness, good corrosion resistance (with magnetic) tableware (knife), turbine blade after quenching, more than 440 steel hardness rising (with magnetic) blade nozzle, valve, and board feet, tableware (scissors). Mechanical properties: inner stress (250 N/was) tensile strength (560 N/was) EL (18%) HB (250) chemical composition: C: 0.95 ~ 1.20, the Si: 1.00, Mn: 1.00, P: 0.040, S: 0.030, Cr: 16.0 ~ 18.0, the Mo: 0.75, hardness HRC: 58 to 62 properties application: 440 C has all stainless steel heat resistant steel, the highest in the hardness. Used for the nozzle, bearings. 440 F: is to improve the 440 C steel to cut the performance of the material. For the automatic lathe. Markov shape stainless steel and ordinary Alloy steel has the same through the quenching realize hardening of the characteristics, so it can choose brand and heat treatment conditions through to get wider range of different mechanical properties. Editor this period of mechanical properties Hardness: annealing, than 269 HB; Quenching tempering, 55 HV frequency Editor this period of heat treatment standard and metallographic organization: Heat treatment specification: 1) annealing, 800 ~ 900 ℃ slow cold; 2) quenching, 1000 ~ 1050 ℃ cold oil; 3) the tempering, 200 ~ 300 ℃ air cold. Metallographic organization: organization feature for markov figure. Editor this period of delivery status: General with heat treatment state delivery, its type heat treatment clearly in the contract; Who is not stated, by not heat treatment state delivery Editor this period of SUS304 stainless steel and SUS440C stainless steel difference SUS304 is austenitic stainless steel, plastic is good and its manufacture performance is good, at the same time because its austenite organization structure, no magnetic, with magnets can't adsorption, heat treatment, hard to increase its strength, its corrosion resistant performance is superior; SUS440C is martensitic stainless steel, microstructure for martensite metallographic organization, mechanical strength is SUS304 high, and can be through the heat treatment to further enhance its mechanical properties and adsorption characteristic of a magnet. Performance decided to use, used in making stainless steel SUS304 many commodities, containers, etc, and SUS440 often used to make tools, tools and other strength hardness to demand higher purpose.