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Where To Buy 440c Stainless Steel

Stainless steels are high-alloy steels which have high corrosion resistance compared to other steels due to the presence of large amounts of chromium. Based on their crystalline structure, they are divided into three types such as ferritic, austenitic, and martensitic steels. Another group of stainless steels are precipitation-hardened steels. They are a combination of martensitic and austenitic steels.

where to buy 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. Grade 440C is capable of attaining, after heat treatment, the highest strength, hardness and wear resistance of all the stainless alloys. Its very high carbon content is responsible for these characteristics, which make 440C particularly suited to such applications as ball bearings and valve parts.

440C stainless steel is a high carbon type of stainless, this is the alloy most often used for knife-making. Can be heat treated for high strength and hardness. 440C stainless steel has greater abrasion and wear resistance for use in bearing and bushing applications. Corrosion resistant only in the hardened condition.

Grade 440C ss is a high carbon martensitic stainless with moderate corrosion resistance good strength, and the ability to obtain and hold excellent hardness (Rc 60) and wear resistance. 440C stainless steel is considered to be slightly cold workable by common practices and does respond to heat treatment.

A typical 440C stainless steel knife has extremely sharp blades, but thin enough to fit into the handle. However, if you want your knife to have a thick blade with aggressive serrations, we have got you covered.

We have stainless steel knives available in different blade types, ranging from clip point to needle point and everything in between.A folding/pocket knife comes in handy where bigger knives are unable to perform well. For instance, skinning and piercing become a lot easier when you have a smaller, folding knife as compared to bigger, fixed blades that are difficult to work with for precision work. Also, a pocket knife can be used for self-defence against humans and animals alike.

Whether you are looking for a stainless steel knife or steel will knives for your upcoming adventure spree, browse through our extensive category of 440C knives to take the right pick, at the right price.

440C (UNS designation S44004) is a martensitic 400 series stainless steel,[1] and has the highest carbon content of the 400 stainless steel series. It can be heat treated to reach hardness of 58 to 60 HRC. It can be used to make rolling contact stainless bearings, e.g. ball bearings and roller bearings. It is also used to make knife blades.

440 stainless steel, a high martensitic stainless steel, has high strength, good hardness, wear resistance and moderate corrosion resistance. After the correct heat treatment, 440C has the capability to reach the highest strength, hardness and wear resistance among the corrosion and heat resistant stainless steels. Corrosion resistance is lower than for the usual austenitic grades, and their useful operating temperature range is limited by loss of ductility at temperatures below zero and loss of strength due to over-tempering at higher temperatures as well as the reduction in corrosion resistance. In both its pre-hardened and post-hardened condition 440C is magnetic.

440C stainless steel has good resistance to atmosphere, fresh water, fruit and vegetable juices, alkalis and mild acids and its corrosion resistance is similar in many environments to 304 stainless steel. Achieve maximum corrosion resistance by hardening from 2000F (1093C), to provide a better carbide solution, meaning the better the finish of the hardened and tempered part, the better its corrosion resistance. A smooth polished surface will support this as well. Care should be taken, however, to minimize the time at 2000F (1093C) to avoid excessive coarsening of the grain. For optimum corrosion resistance, the tempering temperature should be below 800F (427C).

The search for the perfect steel is a never-ending journey. Steelmakers and knife enthusiasts constantly debate the merits of different types of steel. The 440c steel often pops up in these discussions, and varied opinions about the steel abound. Indeed, 440c is not the perfect steel for all applications, but it does have a lot to offer.

In a basic sense, the 440c steel is a high-carbon stainless steel alloy with hardness and mechanical strength at its core. The high carbon content (relative to other stainless steels) gives the alloy its hardness and wear resistance, while the chromium ensures corrosion resistance. This combination of properties makes the 440c steel ideal for mid-range knife blades alongside other cutting tools.

The 440c is a high carbon stainless steel alloy under the 440 series. It contains the highest carbon content in its series, which gives the steel its characteristic hardness, wear-resistance, and strength. The steel has moderate corrosion resistance and is thus perfect for knife blades and other mid-range cutting tools.

The chemical composition of 440c steel is what makes it a unique alloy. Several factors make the steel good for knife blades. When looking for a knife blade material, you want a blade with excellent corrosion resistance and hardness balance.

Thanks to the carbon and chromium content, the 440c alloy has high wear resistance. The 440c steel blade can last a long time without wear. Chefs and other users who need a knife that withstands repeated use will find the 440c steel ideal.

The chemical composition of the 440c steel and its unique properties make it a popular choice for knife blades and other cutting tools. It offers excellent hardness, wear resistance, and corrosion resistance. The alloy is also easy to sharpen and maintain. While the 440c steel may not be the best in every category, it is still a top choice for many applications.

Stainless Steel Grade 440C UNS# S44004 is a high carbon martensitic stainless steel that demonstrates high strength, moderate corrosion resistance, and good hardness and wear resistance. The highest resistances for type 440C can be achieved by hardening and polishing which make this material ideal for cutting instrumentation, surgical blades, and knife blades. Because of these traits it is also common to find type 440C in ball bearings, valves, and measuring instruments.

Stainless steels are high-alloy steels which have high corrosionresistance compared to other steels due to the presence of largeamounts of chromium. Based on their crystalline structure, they aredivided into three types such as ferritic, austenitic, and martensiticsteels. Another group of stainless steels are precipitation-hardenedsteels. They are a combination of martensitic and austenitic steels.

Grade 440C stainless steel is not welded because it can be easilyair hardened. To weld this alloy, it should be preheated to 260C(500F) and post weld treated at 732-760C (1350-1400F) for 6 hfollowed by slowly cooling in the furnace to prevent cracking.

Grade 440C stainless steel is pre-heated at 760C (1400F).Temperature can be increased up to 1038-1204C (1900-2200F). It shouldnot be heated below 927C (1700F). It is then slowly cooled at roomtemperature and fully annealed.

Colour CodeStocked SizesDark Brown(Bar end)Stocked Sizes45 mm to 160 mm diameter.Bar FinishPeeled BarRelated SpecificationsAustraliaAS 2837-1986 440CGermanyW.Nr 1.4125 X105CrMo17JapanJIS G4303 SuS 440CUSAASTM A276-98b 440CSAE 51440C AISI 440CUNS S44004Chemical Composition Min. %Max %Carbon0.951.20Silicon01.00Manganese01.00*Nickel01.00Chromium16.0018.00Molybdenum0.000.75Phosphorous00.04Sulphur00.03*Nickel addition optional.Mechanical Property Requirements For Material in the Annealed Condition to 1) AS2837 - 1986 440C and 2) ASTM A276-98b 440CSpecificationAS2837-1986 440CFinishBrinell Hardness269 MaxCapable of attaining Rc59 minimum in 10mm test bar oil quenched from 1010oC - 1070oC.SpecifricationASTM A276-98b 440CFinishHot FinishedCold FinishedBrinell Hardness269 Max285 MaxCapable of attaining Rc58 minimum in 9.50mm test bar air cooled 1020oC.Typical Mechanical Properties At Room Temperature in the Annealed Condition (AS Supplied)Tensile Strength Mpa785Yield Strength Mpa420Elongation in 50mm %15Impact Charpy J6HardnessHB240Rc24Typical Mechanical Properties At Room Temperature - Hardened By Oil Quench at 1030oC and Tempered as IndicatedTempering Temperature oC150200250300350400Tensile Strengt Mpa205020201980189018201780Yield Strength Mpa193018961845176016751635Elongation in 50mm %444444Impact Charpy J999999Hardness Rc605957565656Section Size 25mmHigh tensile strength, high yield strength and high hardness but low impact properties.Elevated Temperature Properties440C is not generally recommended for elevated temperature applications due to a reduction in corrosion resistance when tempered above 400oCLow Temperature Properties440C is also not recommended for use at sub-zero temperatures due to a further drop in impact properties.Cold BendingModerate cold bending is possible when fully annealed to maximum softness.Hot BendingNot generally recommended due to the high hardenability - air hardening capabilities of this grade. If really necessary then work piece following operation should be cooled as slowly as possible either in a furnace or in warm dry lime or ashes to room temperature prior to annealing.Corrosion Resistance440C has a corrosion resistance somewhat similar to 410 grade, but lower than 431 grade, also lower than most of the 400 series ferritic stainless steels and all of the 300 series austenitic stainless steels.NB. It has optimum corrosion resistance in the hardened and tempered condition when tempered below 400oC. Hardening from 1090oC will ensure better carbide solution, and therefore better corrosion resistance, but minimum soaking time should be allowed at this temperature otherwise excessive grain growth can occur. Polishing will further develop its corrosion resistance. It is not recommended for use in the annealed condition.It is most important that oxygen is always allowed to circulate freely on all stainless steel surfaces to ensure that a chrome oxide film is always present to protect it. If this is not the case, rusting will occur as with other types of non stainless steels. 041b061a72


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