The stiffness and strength of 440 stainless steel are the main distinctions between it and related alloys. 304 vs 316 stainless steel strength That minimum 2.0% molybdenum in grade 316 also gives it more strength than 304. 440C Stainless Steel Bar. As a martensitic stainless steel, 440C is magnetic and can be hardened by heat treatment. When tempering 440C a Rockwell hardness of 60HRc can be obtained. High strength, good corrosion resistance, and good hardness and wear resistance. The higher carbon content in 440 produces a much more difficult and robust product than other alternatives. 440C has tremendous wear resistance, strength, toughness, and exceedingly high corrosion resistance. Be careful not to overheat or full hardness will not be obtained. Choose from over 550 440C stainless steel products in a wide range of sizes. Grade 440B stainless steel is a high carbon martensitic stainless steel containing good strength, moderate corrosion resistance and ability to obtain and . 440C is the AISI designation for this material. Machining of the alloy is much more difficult when hardened. Stainless 440 Steel Plate has high strength, moderate corrosion resistance, and good hardness and wear resistance. 440C can be hardened to 60 HRC which is the highest hardness of any other stainless steel. Stainless steel wire rods 440C Physical Properties . We produce ASTM/ASME Grade 304, Grade 304L,304h, 316, 316L, . It is then slowly cooled at room temperature and fully annealed. Tempering When tempering 440C a Rockwell hardness of 60HRc can be . Like the 420HC stainless steel, knife blades and surgical tools are ideally created with 440C stainless steel. Yield strength (ksi): 65. 440C after heat treating is the able to attaining the very best strength.. The strength and resistance level of 440C stainless steel makes it just right for producing other items besides knife blades, such as bearings, mold inserts, nozzles, and parts on pumps. […] Alloy Search. The ultimate tensile strength is the maximum on the engineering stress-strain curve. Martensitic steels . Hardness (Brinell): .00-269.00. Grade 440 stainless steels exhibit excellent resistance to mild acids, alkalis, foods, fresh water and air. These properties make It is a bearing steel, and used in rolling contact stainless bearings, e.g. High chromium resistance is expected from this grade because of its 17% chromium content. That said, there are some knife enthusiasts who look down on 440 steel. Grade 440C steels exhibit corrosion resistance similar to that of grade 304 steels. Grade 440C stainless steel is the best steel in the 440 series, it has the high carbon content among the three 440s', offering excellent hardenability, good wear resistance, and good corrosion resistance. This grade is supposed to supply most hardness and wear resistance with stainless properties. 440A is a comparatively a low price, highly corrosion resistant chrome steel. 3. Stainless steel 440C is a martensitic stainless alloy with 18% chromium 1.20% carbon. Hardenable high-carbon chromium steels designed to provide stainless properties with maximum hardness ; Have maximum hardness together with high strength and corrosion resistance in the hardened and stress relieved condition ; Always used in the hardened or hardened and stress relieved conditions . To anneal 440C stainless steel, heat uniformly to 840-875°C. Type 440 stainless steel, which is available in four grades: 440A, 440B, 440C, and 440F, has good corrosion and abrasion resistance. 440C is a high carbon straight chromium high hardenability martensitic stainless steel, generally supplied in the annealed condition with a maximum Brinell hardness of 269 (Rc29) or annealed and cold drawn with a maximum Brinell hardness of 285 (Rc31).Characterised by good corrosion resistance in mild domestic and industrial environments, including fresh water, organic materials, mild acids . There are 31 material properties with values for both materials. It is a high-carbon alloy that is particularly well suited for hardness and strength parts. 440C Steel Properties & Composition (UNS J91601) - Martensitic Stainless Steel. Grade 440C stainless steel is pre-heated at 760°C (1400°F). The steel has good hardness as well as good wear resistance. engineers' references. Be careful not to overheat or full hardness will not be obtained. Molybdenum strengthens and hardens steel, though its primary function is to stand up to corrosion from chlorides, such as salt. The product is highly suitable for use in applications where greater strength and moderate corrosion resistance is a consideration. SS 440A, 440B and 440C stainless steel are AISI and ASTM standard high carbon high chromium martensitic stainless steel, SS440 has high strength, good hardness, corrosion resistance, wear resistance and high temperature dimensional stability. Elongation (%): 14. It is magnetic both in its pre-hardened and post-hardened states. Whether you choose 304 or 316 stainless steel comes down to your application and budget. Knife Blade Materials. The manufacturing specification for Alloy 440C is AMS A276. 440C is typically used in bearing . This balance depends on the use, exposure, strength, and corrosion resistance needed for particular applications. It can have the highest tensile strength among wrought martensitic stainless steels. Grade 440C strip is capable of attaining, after heat treatment, the highest strength, hardness and wear resistance of all the stainless alloys. Alloy 440 is the higher carbon (0.04 - 0.10) version of the alloy. 440 Stainless Steel Type 440A, 440B, and 440C Plate. In addition, 440C is martensitic. Temper for at least one hour. these have a higher . It has good resistance to the atmosphere, fresh water and mild acids. The key difference between these two steel grades is that 440C contains higher carbon content and will . Includes material certificates and CAD models. 440B stainless steel is used for cutting tools, measuring tools, bearings and valves. Grade 440C is capable of attaining, after heat treatment, the highest strength, hardness and . Grade 440C is capable of attaining, after heat treatment, the highest strength, hardness and wear resistance of all the stainless alloys. One of the hardest types of stainless steel after heat treating, 440C offers excellent wear and abrasion resistance. Grade 440C stainless steels are high carbon steels, which attain the highest hardness, wear resistance and strength of all stainless steel grades after heat treatment. High Strength. 440B stainless steel has higher hardness and toughness than 440C steel. Click for Details on this Alloy to Find out if it's Right for Your Sand Casting Needs . AISI type 440C stainless steel balls offer the maximum in material strength and fair corrosion resistanc. Corrosion resistant only in the hardened condition. For maximum hardness and strength, a hardening heat treatment is necessary. Click to see full answer. For each property being compared, the top bar is AISI 316 . Although the alloy has a higher carbon content, there is enough chromium content to retain the materials stainless steel characteristics. Grade 309 or 310 filler rods will, however, provide soft welds, having high ductility. Dimensions are 3/32" x 6" x 12". Type 440 Stainless Steel, which comes in four different grades, 440A, 440B, 440C, 440F, offers good corrosion resistance along with abrasion resistance. Yield Strength 23 σ 0.2 ≥/MPa Elongation 65 δ5≥ (%) ψ - ψ≥ (%) Akv - Akv≥/J HBS 123-321 - HRC 30 - 440C Mechanical Properties Tensile strength 231-231 σb/MPa Yield Strength 154 σ 0.2 ≥/MPa Elongation 56 δ5≥(%) 440C stainless steel coil: Type: cold rolled & hot rolled: Surface: NO.1 2b 2D: Width: 1250mm 1500mm: Thickness: 0.6 - 14.0mm: Other Grade: 201 304 310s 321 316l 410 420 430 436 904l: Contact Now. Yield Strength; 10,000 to 19,999 psi: 20,000 to 99,999 psi: 100,000 to 199,999 psi: 200,000 psi or greater: Not Rated: Fabrication. The other popular improvements of 440A are the 440B and 440C steels. AISI 440C stainless steel is a martensitic stainless steel formulated for primary forming into wrought products. And it is, 440 stainless steel is great for knives. As a martensitic stainless steel, 440C is magnetic and can be hardened by heat treatment. Molybdenum improves the steel deep hardening and toughness. 440C (UNS designation S44004) . Type 440 Stainless Steel, as known as "razor blade steel," is a hardenable high-carbon chromium steel.When put under heat treatment it attains the highest hardness levels of any grade of stainless steel. 440C has the highest strength, hardness, and wear resistance of all the commonplace 440-series stainless . The 'C' suffix stands for 'carbon' since it is the stainless steel alloy with the highest carbon content in the 400 series. In addition, it can have the lowest ductility and has a moderately low . Machinability . Grade 440C stainless steels are high carbon steels, which attain the highest hardness, wear resistance and strength of all stainless steel grades after heat treatment. 440C Stainless Steel is a high carbon chromium steel. However, the softer 440A and 440B offer better stain-resistance and are a better option for salt water applications. 440 stainless steel can be hardened and tempered in the same manner as alloy steel. Grade 440C stainless steel is a high carbon martensitic stainless steel. A smooth polished surface also helps grade 440 steels resist corrosion in tempered, passivated and hardened conditions. These properties make . 20lb Steel Club for Grip Strength and Shoulder MobilityAge 59 Stainless 440C is a high-carbon martensitic stainless steel. Hence, it exhibits high strength. It's often used for bearings, valves, and knife blades. 1% MAX. Grade 440C is capable of attaining, after heat treatment, the highest strength, hardness and wear resistance of all the stainless alloys. Can be heat treated for high strength and hardness. Cold Working Grade 440C stainless steel is slightly cold workable using common practices. In their annealed form, all grades are easy . 2. Tensile Strength Proof Stress Elongation A50 mm Hardness in the supply condition - 269 HBW (28 HRC) max Hot-finished . BROWSE CATALOG. 440B and 440C. SS 440A, 440B and 440C stainless steel are AISI and ASTM standard high carbon high chromium martensitic stainless steel, SS440 has high strength, good hardness, corrosion resistance, wear resistance and high temperature dimensional stability. The stainless steel alloys shown in the table above were heated as sheet samples for 60 minutes per inch of thickness at 1800°F (982°C) for Type ATI 410 and at 1900°F (1038°C) for ATI 420, ATI 425 Modified, and ATI 440A alloys, and then air cooled to room temperature. Hardening To harden stainless steel 440C heat to 1010-1070°C, fully soak and quench in warm oil or air cool. 440 stainless steel grade possessed high carbon content and equipped with the highest hardness perfect for ball bearings and valve components. Oversized Bearing-Quality 440C Stainless Steel The width and thickness are oversized for finishing to your exact requirements. Grade 440C is capable of attaining, after heat treatment, the highest strength, hardness and wear resistance of all the stainless alloys. It is also used to make knife blades. Today, there are better steels around. Fasteners; . Often referred to as "razor-blade steel" due to its frequent use in the manufacture of razors and cutlery, grade 440 stainless steel provides high strength and moderate corrosion resistance. Type 440C (UNS S44004) is a martensitic stainless steel with high carbon and chromium content. 440 stainless steel. It has high strength, moderate corrosion resistance, and good hardness and wear resistance. Material Notes: Fe-17Cr-1Mn-1Si-.75Mo-1.1C. 440A steel is a basic alloy that has been improved severally to form more superior steels. They have 85% of their average alloy composition in common. It also improves the steel tensile strength. It also enhances wear resistance. Despite this carbon content, the chromium content is sufficient to retain its stainless characteristics. Premium grade martensitic 440C Stainless Steel annealed sheet stock for making knife blades and folder liners. Stainless Steel Alloy 440C is relatively easy to machine in the annealed condition. 1. Buy Martensitic Stainless Steel 440C bolts, nuts and other fasteners from Boltport, an Indian manufacturer & supplier of Martensitic Stainless Steel 440C bolting materials to ASTM B446, B564, F467, F468, UNS N06440C, DIN EN 2.4856, AMS 5666 and BS 3076 specifications with properties adequate for high strength, corrosion resistant and high temperature applications up . 440 has been around for a long time already. Ultimate tensile strength is often shortened to "tensile strength" or even to "the . 440C Martensitic Stainless Steel (UNS S44004) Categories: Metal; Ferrous Metal; Martensitic; Stainless Steel; T 400 Series Stainless Steel. Comparing two steels from the same family of steel is a fair game, right? AISI 440C Stainless Steel . Chromium makes 440C stainless steel harder and more wear, rust, and corrosion-resistant. 440 Stainless Steel: Type 440A, 440B, and 440C . Machining Grade 440 stainless steels can be easily machined in their annealed state. Based on these physical properties, 440 stainless steel is the best fit for products whose main requirements are strength and durability. Typically used for molds, bearings, turbine components, aircraft structural parts, medical instruments, and cutlery Hardened Bearing-Quality 440C Stainless Steel 440 Stainless Steel: Type 440A, 440B, and 440C . 440C can be oil quenched to achieve maximum hardness. Examples include; 7Cr17MoV which has added Vanadium elements to increase wear resistance and strength. 440C and 440F steels 0.95-1.20% Carbon All 440 steels are hardenable, meaning they gain additional strength via heat treatment, and they are considered a high carbon alloy steel. It was developed for enhanced creep resistance and for higher strength at temperatures above 1000oF (537°C). 1% MAX. 440C can be hardened to 60 HRC which is the best hardness of some other stainless-steel. . 440a Steel Composition What is the hardness of 440a Steel? Navigation Toggle. This corresponds to the maximum stress that can be sustained by a structure in tension. High carbon alloy contains 17% chromium, 1.1% carbon, 1% manganese, 1% silicon, and 0.17% molybdenum. It has the highest hardness, highest strength and greatest wear resistance of all of them after it has undergone hardening via heat treatment. 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