Prominent & Leading Importer from Mumbai, we offer stainless steel 440a seamless bars, smo 254 round bar, nickel alloy round, inconel alloy 625 round bars nickel alloys, nickel alloy round bar and nickel 200 round bar.
Manufacturing Process:Stainless steel grade 440A can be easily machined in the annealed condition. Carbide or ceramic tooling is recommended for performing machining. Chip breakers enable easy handling of tough stringy chips. As this steel has the tendency to air harden, welding is not performed; however if it is required, the steel should be preheated to 260°C (500°F) and post-weld treated at 732-760°C (1350-1400°F) for 6 h. This is followed by a slow furnace cooling to avoid cracking. Grade 440A stainless steel is annealed at 843-871°C (1550-1600°F), followed by very slow furnace cooling. For performing hot working, the materials needs to be preheated to 760°C (1400°F) and then slowly increased to 1038-1204°C (1900-2200°F) before proceeding. The material should then be cooled slowly after working and once again cooled at room temperature. Finally it must be annealed fully. This material should not be heated below 927°C (1700°F). For performing tempering, grade 440A should be soaked at 148°C (300°F). Similarly for hardening, the material should be heated slowly to 760°C (1400°F), then soaked at 1010°C (1850°F), finally air or oil cooled.
Applications:Grade 440A stainless steel is widely used in the following applications:
254 SMO Plate is a type of austenitic steel. Austenitic steel is a type of stainless steel which contains low amounts of carbon only up to 0.8% in weight. SMO 254 Plate is a very high end stainless steel that it has the mechanical properties with values almost twice the values of the 300 series steels in most cases
A nickel alloy round bar is a type of steel with high nickel content (usually between 60% and 80%). This is valuable in construction, machinery, and aerospace industries to create parts that require high strength and resistance to corrosion. It can be manufactured as either a wire or sheet
Inconel® 625 (AMS 5599, UNS N06625) is a nickel-based superalloy with excellent resistance to oxidation and corrosion. The nickel-chromium matrix of this material is reinforced by the addition of molybdenum and niobium, which is alloyed through solid solution strengthening
Nickel is a silvery-white, hard, malleable, and ductile metal. It is a good conductor of heat and electricity. It is bivalent, that is it has a valency of two. The metal dissolves slowly in dilute acids.
Nickel 200 and Nickel 201 are solid solution strengthened, commercially pure wrought alloys. The elemental restrictions of both alloys are combined into one, dual-certified chemistry, resulting in a single alloy with the desired characteristics of both alloys
Stainless Steel Rods are a type of stainless steel product that is in a cylindrical shape and made up of stainless steel grades- 304, 321, and 316 most commonly. These stainless steel round bars are usually used in sectors like the food industry or construction businesses
Nickel 200 and Nickel 201 are solid solution strengthened, commercially pure wrought alloys. The elemental restrictions of both alloys are combined into one, dual-certified chemistry, resulting in a single alloy with the desired characteristics of both alloys
Round Bar is a long, cylindrical metal bar stock that has many industrial and commercial applications. The most common application is shafts. The product is typically measured by taking its diameter. Standard diameters range from 1/4″ all the way up to 24″.
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Product Details:
Usage/Application
Industrial
Finish
Polished
Surface Finishing
Hot Rolled
Product Material Grade
440
Brand
Milton Steel
Country of Origin
Made in India
We are engaged in offering 440 Stainless Steel Round Bar to our clients. Our range of all products is widely appreciated by our clients.
Grade 420 stainless steel is a high-carbon steel with a minimum chromium content of 12%. Like any other stainless steel, grade 420 can also be hardened through heat treatment. It offers good ductility in its annealed state and excellent corrosion resistance properties when the metal is polished, surface grounded or hardened. This grade has the highest hardness - 50HRC - among all the stainless steel grades with 12% chromium. Stainless steel grades that are similar to grade 420 stainless steels include martensitic steels such as the other versions of grade 420, having vanadium, sulphur and molybdenum in their composition, and the grade 440 series. Non-standard grade 420C has carbon content that is little higher than that of grade 420. Martensitic stainless steels are ones with high hardness and high carbon content. These steels are generally fabricated using methods that require hardening and tempering treatments. The operating conditions of martensitic steels are affected by loss of material’s strength at high temperatures, and decrease in ductility at negative temperatures.
Key Properties:
The following properties are mentioned for bar products in ASTM A276. The specification may not necessarily be similar for other forms, such as forgings and plate.
Corrosion Resistence:
Under hardened conditions, grade 420 steels are resistant to fresh water, alkalis, air, foods and mild acids. The steel grades with a smooth surface finish have excellent performance. The corrosion resistance properties of grade 420 will tend to fall under annealed conditions. The corrosion resistance of grade 420 is lower than that of the grade 430 Ferritic alloys with 17% chromium, grade 410 steels and other austenitic grades.
This steel grade finds application in cutlery such as carving knives, table knives and so on. Grade 420 steels have good corrosion resistance against food, but continuous exposure of metals to unwashed food substances can lead to pitting corrosion.
Heat Resistance:
Grade 420 stainless steels have a scaling resistance at temperatures of up to 650°C. However, temperatures above standard tempering temperature are not suitable for this grade.
Heat Treatment:
Annealing – Grade 420 stainless steels can be heated at temperatures from 840 to 900°C, followed by slow furnace cooling at 600°C and then air-cooling.
Process Anneal – Grade 420 can be annealed at 735 to 785°C and air-cooled.
Hardening – This process involves heating grade 420 steels at 980 to 1035°C, followed by air or oil quenching. Oil quenching is usually preferred for heavy metal sections. Tempering is performed at 150 to 370°C to achieve high hardness and good mechanical properties. Grade 420 should not be tempered between 425 and 600°C.
Welding:
Grade 420 stainless steels are welded using welding rods, coated with grade 420 metals, to achieve high-strength joints. During the process, steels are pre-heated at 150 to 320°C and post-heated to 610 to 760°C. In the “as welded” condition, parts are welded using grade 309 filler rods to achieve ductile joints. However, grade 309 electrodes or rods are recommended for welding grade 420 steels by AS 1554.6.
Machining:
Grade 420 steels can be easily machined in their annealed state, but they are difficult to machine having a hardness greater than 30HRC. One of the most readily available machined alternatives is the free-machining grade 416 steels.
Applications:The key applications of grade 420 stainless steels include:
Alloy 303 is a non-magnetic, austenitic stainless steel that is not hardenable by heat treatment. It is the free machining modification of the basic 18% chromium / 8% nickel stainless steel. Alloy 303 was specially designed to exhibit improved machinability while maintaining good mechanical and corrosion resistant properties Due to the presence of sulfur in the steel composition, Alloy 303 is the most readily machineable austenitic stainless steel; however, the sulfur addition does lower Alloy 303’s corrosion resistance to below that of Alloy 304. Like other austenitic grades, Alloy 303 demonstrates excellent toughness, although the sulfur does reduce this a little as well.
Alloy 303 is frequently used in applications that require parts to be heavily machined. Some examples include:
Alloy 904L (UNS N08904) is a superaustenitic stainless steel that is designed for moderate to high corrosion resistance in a wide range of process environments. The combination of high chromium and nickel content, coupled with additions of molybdenum and copper, assure good to excellent corrosion resistance
Titanium Grade 2 has good ductility, which allows for cold formability. To prevent cold forming concerns, the minimum bend radius for material under 0.070″ thick should be 2T, while 2.5T should be used for material over 0.070″. The material can also be easily machined, hot worked and welded.
17-4 PH Round Bar is a Chromium Nickel Copper Precipitation Hardening Stainless Steel used for applications requiring high strength and moderate level of corrosion resistance. Strength and toughness desired can be manipulated by temperate range in the heat treatment process
Inconel 718 is a nickel-chromium alloy that contains supplemental amounts of columbium, iron, molybdenum, aluminum, and titanium. It is also known as nickel alloy 718. Given this alloy's durability and ductility characteristics, it has a wide range of applications in a broad spectrum of industries
INCONEL® alloy X-750 (UNS N07750/W. Nr. 2.4669) is a precipitation-hardenable nickel-chromium alloy used for its corrosion and oxidation resistance and high strength at temperatures to 1300°F
These bars have lower thickness and are generally used in structural applications. The ASTM B446 UNS N06625 Hex Bar exhibits a polygonal cross section and is designed with six sides. These bars allow for better movement and torsion in the system. The Nickel 625 Forged Bars are produced via the forging process
This specification establishes the requirements for seamless copper-nickel pipe and tube in straight lengths, suitable for general engineering purposes. The alloys involved are copper alloys UNS Nos. C70400, C70600, C70620, C71000, C71500,C71520, and C72200
ASTM A182 F55 equates to UNS S32760. The origins of this grade can be traced back to the development of Zeron 100 by Platt & Mather, Manchester UK. It is another super duplex stainless steel based upon a 25% Cr composition, but with an addition of tungsten
Hastelloy X is a solid-solution-strengthened nickel-chromium-iron-molybdenum alloy that combines good oxidation resistance, high-temperature strength and exceptional stress-corrosion resistance which makes this alloy also interesting for petrochemical applications.
The Inconel 625 Round Bar is designed possessing a superior chemical composition consisting of chromium, nickel, and molybdenum. The outstanding content embedded in them gives them excellent corrosion and oxidation resistance properties
Hastelloy X is a solid-solution-strengthened nickel-chromium-iron-molybdenum alloy that combines good oxidation resistance, high-temperature strength and exceptional stress-corrosion resistance which makes this alloy also interesting for petrochemical applications.
Hastelloy X is a solid-solution-strengthened nickel-chromium-iron-molybdenum alloy that combines good oxidation resistance, high-temperature strength and exceptional stress-corrosion resistance which makes this alloy also interesting for petrochemical applications.
Hastelloy C276 Round Bar is a corrosion-resistant alloy made from nickel, molybdenum, and chromium. It is designed for use in harsh environments where high corrosion resistance is required. The round bar is made by shaping the alloy into a cylindrical form & then cutting it into desired lengths
Monel® is an alloy of nickel and copper that was first developed for commercial use in 1905. It is mainly used for its excellent corrosion and temperature resistance and is especially valued for applications in the marine and chemical processing industries
Inconel is a nickel-chromium-based superalloy often utilized in extreme environments where components are subjected to high temperature, pressure or mechanical loads.
Stainless steel grade 430 is a non-hardenable steel containing straight chromium, and belongs to the ferritic group of steels. This steel is known for its good corrosion resistance and formability, coupled with practical mechanical properties. It can be used in certain chemical applications due to its resistance to nitric acid. Grade 430F stainless steel is usually provided in bar form to be used in automatic screw machines. Grade 434 has similar properties as grade 430, although it is a molybdenum-bearing version. The molybdenum content enhances its corrosion resistance.
Key Properties:
The following sections will provide the key properties of grade 430 stainless steels coil, sheet and plate - covered under ASTM A240/A240M.
All ferritic grades, such as stainless steel grade 430, have excellent stress corrosion cracking resistance. Grade 430 has good corrosion resistance to numerous substances, such as certain organic acids and nitric acid. The corrosion resistance is maximized in well-polished or buffed condition. Its pitting and crevice corrosion resistance is quite similar to that of grade 304. 430F is a high-sulfur free machining grade, and therefore the resistance to pitting and crevice corrosion is comparatively lesser than those grades that are non-free machining.
Heat Resistance:
Stainless steel grade 430 is capable of resisting oxidation up to 870°C (1598°F) in intermittent usage, and up to 815°C (1499°F) in continuous usage. At room temperature, it has the tendency to become brittle, especially when it has been heated for a long time in the 400-600°C (752-1112°F) range. This issue can be overcome with annealing.
Heat Treatment:
Solution annealing can be performed by heating stainless steel grade 430 to 815 - 845°C (1499-1553°F). Then it has to be slow furnace cooled to 600°C (1112°F) and followed by air-cooling in a quick manner - as slow cooling between 540 and 400°C (1004 and 752°F) tends to cause embrittlement.
For sub-critical annealing, heating should be performed to 760-815°C (1400-1499°F), followed by air-cooling or water quenching.
This stainless steel cannot be hardened by thermal treatment.
Welding:
To perform any welding, stainless steel grade 430 has to be pre-heated at 150-200°C (302-392°F). In case of embrittlement in the welded metal, the particular area can be post-weld annealed at 790-815°C (1454-1499°F); however grain refinement will not happen.
It is recommended that grade 430, 308L, 309 or 310 filler rod should be used based on the application.
Machining:
The machinability of stainless steel grade 430 is a lot easier than standard austenitic steels such as grade 304 - but there is a chance for galling. Lightly drawn bars are easier to machine than bars in the annealed condition. Grade 430F is easy to machine.
Fabrication:
Stainless steel grade 430 has a low work hardening rate which enables easy bending and forming. The low ductility rate, however, makes it difficult to perform very rigorous operations. It is possible for grade 430 wire to handle rigorous cold heading. Sub-critical intermediate annealing may be required for extreme cold working.
Applications:The following are the applications for stainless steel grade 430:
The Inconel 690 material is a kind of austenitic nickel-base superalloy, which has excellent stress corrosion cracking resistance, excellent corrosion resistance, high strength, strong antioxidation, and favorable metallurgy stability
Round Bar is a long, cylindrical metal bar stock that has many industrial and commercial applications. The most common application is shafts. The product is typically measured by taking its diameter. Standard diameters range from 1/4″ all the way up to 24″.
Inconel is a nickel-chromium-based superalloy often utilized in extreme environments where components are subjected to high temperature, pressure or mechanical loads. Inconel alloys are oxidation- and corrosion-resistant.
The Inconel 690 material is a kind of austenitic nickel-base superalloy, which has excellent stress corrosion cracking resistance, excellent corrosion resistance, high strength, strong antioxidation, and favorable metallurgy stability
Round Bar is a long, cylindrical metal bar stock that has many industrial and commercial applications. The most common application is shafts. The product is typically measured by taking its diameter. Standard diameters range from 1/4″ all the way up to 24″.
Inconel is a nickel-chromium-based superalloy often utilized in extreme environments where components are subjected to high temperature, pressure or mechanical loads. Inconel alloys are oxidation- and corrosion-resistant.
Ferralium 255 is a super duplex stainless steel in the Ferralium family. It was the first super duplex stainless steel. Developed by Langley Alloys to meet the needs of the oil, gas and chemical industries, Ferralium 255 achieves higher strengths than most other stainless steel varieties and corrosion-resistant alloys
Ferralium 255 is a super duplex stainless steel in the Ferralium family. It was the first super duplex stainless steel. Developed by Langley Alloys to meet the needs of the oil, gas and chemical industries, Ferralium 255 achieves higher strengths than most other stainless steel varieties and corrosion-resistant alloys
ASTM A182 F51 Flange is made up of a duplex steel material. The material has both ferritic and austenitic qualities in the metallurgic microstructure. The tensile strength of the material is 620MPa and the minimum yield strength is 450MPa
ASTM A182 F55 equates to UNS S32760. The origins of this grade can be traced back to the development of Zeron 100 by Platt & Mather, Manchester UK. It is another super duplex stainless steel based upon a 25% Cr composition, but with an addition of tungsten
ASTM A182 F51 Flange is made up of a duplex steel material. The material has both ferritic and austenitic qualities in the metallurgic microstructure. The tensile strength of the material is 620MPa and the minimum yield strength is 450MPa
Duplex SS are two-phase alloys containing equal proportion of ferritic and austenitic phases in their microstructure, providing a combination of the corrosion resistance of austenitic stainless steels with greater strength
