In addition, the nickel in alloy 4340 increases hardenability of the steel. A wide variety of 4340 steel options are available to you, such as hot rolled, cold drawn, and forged. They have a very high 98% of their average alloy composition in common. Since weapon system components are often stored in readiness condition for. Alloy steels comprise a wide range of steels whose compositions exceed the limitations of. Improving the microstructure, mechanical and magnetic properties of aisi 4340 steel using the heat treatment process z. Alloy steels contain elements such as chromium, cobalt, nickel etc. You can also choose from plate 4340 steel plate, as well as from aisi, jis, and astm 4340 steel plate, and whether 4340 steel plate is coated, or galvanized. Alloy steels are designated by aisi fourdigit numbers. The alloy has a good combination of ducility, toughness and strength along with high hardenability. Aisi 4340 alloy steel aisi 4340 steel stockholders and suppliers, delivering to the whole of the uk. Results are displayed up to a maximum of 200 materials per page. A discussion started in 2011 but continuing through 2018. Aisi 4340 steel is a medium carbon, low alloy steel.
This steel presents a good hardening ability that promotes the improving of its mechanical properties when submitted to quenching and tempering. Steel of the alloy 4340 can be heat treated heated to a set temperature for the particular material and then quenched using an oil quench to increase the alloys strength. This material has a high fatiguetensile ratio and maintains strength, ductility, and toughness at relatively high temperatures. Aisi 4340 is a nickel chromium molybdenum alloy steel specification widely used in the oil and gas sectors. Throughhardening low alloy steel bar 4340 colour code.
It is known for its toughness and capability of developing high strength in the heat treated condition while retaining good fatigue strength. Customers calling us for 4340 plate a lot of times are frustrated with ontime delivery issues. Capital steel is a distributor of 4340 grade cold drawn steel bar stock. The 4340 alloy steel is a nickelchromium molybenum with a medium carbon content. Stainless steel e4340 aircraft quality bars progressive. Flame and induction hardening is the type of heat treatment that works with 4340. Alloy plate 4140 4340 8620 astm a 829 oliver steel. Aisi 4340 steel, nickel chrome moly high tensile steel, generally supplied hardened and tempered to condition u in sections up to 100mm, with a tensile strength of 930 1080 mpa and aiming for this strength range in larger. In comparison with carbon steels, alloy steels are a lot more responsive to mechanical and heat treatments.
Aisi 4140 steel, oil quenched, 540c f temper, 25 mm. The source standarts should always be checked for the specific purpose for each material, in case of doubt buy, sell, suppliers search product 4340 online. Aisisae 4340 alloy steel 4340 steel properties all metals. After temperin g that value decreases, reaching the smalle st val ues after temperi ng between 300 c and 500 c. A diehl steel representative will assist all customer requests for these products. Whether you need material punched, flame cut, plasma. The specialty steel products are available upon request and all stock is subject to mill availability. It has high toughness and strength in the heat treated condition.
The primary alloying elements that are characteristic of 4340 steel are molybdenum. Several common applications of 4340 steel are power transmission pipes, gears and aircraft landing equipment. Apr 12, 2011 recommended corrosion protection finish for 4340 steel. Alloy plate 4140 4340 8620 astm a 829 standard specification for alloy steel plate furnished to chemical composition requirements. Aisi 4340 steel is a lowalloy martensitic steel that can be heat treated to provide a wide range of hardness values. Hot forged 4340 steel bar engineering steel supplier. Also has excellent nondistorting properties for an alloy steel. With proper working and strengthening, items made from 4340 have excellent wear and durability qualities. High strength in heavy sections is possible with maximum toughness and ductility.
Magnetic properties, retained austenite, sae 4340 steel. Throughhardening low alloy steel bar 4340 atlas steels. Alloys international is an as9100d worldwide distributor and specialty converter of 4340 in forms including sheet, bar, special shapes and angles, forgings, castings, tube, pipe, wire and spare parts. E4340 is a highly alloyed, electricfurnace processed. The search phrase you entered, 4340, is common to 61 materials, by searching on the term s 4340 in most common text fields. Aisi 4340 is also one kind of nickel chromium molybdenum steels. Our cd 4340 alloy steel bars have many applications. It has excellent ductility, toughness and strength characteristics that make it useful for a variety of industries and applications.
The sae 4340 steel is a kind of special alloy steel, and it contains the main alloy elements are. They comprise different kinds of steels having composition exceeding the limitations of b. Both astm a36 carbon steel and normalized saeaisi 4340 are iron alloys. Ideal for highly stressed parts operating under severe conditions, aircraft quality aisi 4340 steel alloy material is excellent for shafts and valves that are subject to extreme conditions. We offer aisi 4340 in blocks, plate from 10mm thick up to 300mm, diameters from 10mm up to 950mm, squares from 20mm to 300mm and flats 20 x 10 up to 3000 x 300mm from stock. The following table shows the chemical composition of aisi 4340 alloy steel. Recommended corrosion protection finish for 4340 steel. Magnetic properties and retained austenite quantification. Yag systems have often been used as an energy source for heat treatment in several case studies. It is used in making gun parts, engine parts such as pistons, gears and bearings, and aircraft parts such as landing gear. Aisi 4340 is a low alloy steel containing nominally 0. It has a very good fatigue strength and resilience. It is a nickelchromiummolybdenum medium carbon alloy steel with deep hardenability. Jade band marigold introduction atlas 4340 is a nominally 1.
Astm 4340 steels and equilvalents chemical composition. Magnetic properties and retained austenite quantification in. Aisi 4340 steel is a medium carbon, low alloy steel known for its toughness and strength in relatively large sections. Uses this steel manufacture the product to have the higher tensile strength, and the thermal stability and toughness are higher. Aisi 4140 steel, oil quenched, 540c f temper, 25 mm 1 in. Itemdimension is thickness in inches find your closest store 0. The following information gives an overview of 4340 steel properties, chemical composition, suppliers and etc. Aisisae 4340 alloy steel, 4340, is a nickelchromiummolybdenum alloy steel known for its toughness and its ability to attain high strengths in the heattreated. If your material is not listed, please refer to our search help page for assistance. Alloy steel 4340 steel plate metal supermarkets steel. The combination of these elements assures deep and uniform hardness when heattreated, particularly when oil quenched. Aisi 4340 alloy steel is a heat treatable and low alloy steel containing chromium, nickel and molybdenum. Steel alloy 4340 provides a good balance between strength and malleability. With one of the largest nonmill inventories in the u.
Alloy 4340 plate is another general purpose grade of steel used for industrial and machining applications. That is why this steel is used to manufacture aircraft, automotive and other general engineering components. Mechanical properties and microstructural features of aisi. It is known as an ultra high strength grade of steel and serves a variety of applications for highly stressed parts. For each property being compared, the top bar is normalized saeaisi 4150 and the bottom bar is saeaisi 4340 steel.
Quenched sae 4340 steel presents a co ercive for ce of. Aisi 4340 steel stockholders and suppliers, delivering to the whole of the uk. Standard mill sizes for alloy steel 4340 steel plate range from. I am currently having a discussion about the differences between 4140 and 4340. A wide variety of 4340 steel plate options are available to you, such as hot rolled, cold rolled. Contact your local metal supermarkets store to confirm availability and pricing.
Average cutting force f c, feed force f f and thrust force f p are presented. Aisi 4340 also known as en24 comes treated in the t condition to 850 nmm 2. Taherizadeh 3 1 department of materials engineering, isfahan university of technology, isfahan 8415683111, iran 2 central laboratory, university of isfahan, isfahan 8174673441, iran. Stainless steel e4340 aircraft quality bars progressive alloy. Revealing prior austenite grain boundaries of 4340 steel. Sae 4340 steel has demonstrated interesting applications where good mechanical and magnetic properties are necessary, at a low cost. For permanently stressed components with large cross sections for automotive and mechanical engineering. Both normalized saeaisi 4150 and saeaisi 4340 steel are iron alloys. Where fracture toughness and impact strength are crucial, 300m is a great choice. The search phrase you entered, 4340, is common to 61 materials, by searching on the terms 4340 in most common text fields.
Follow the links below to view complete property information. Aisi 4340 highstrength alloy steel, supplied in the form of an extruded bar of 25. An ironbased alloy steel, 4340 contains nickel, chromium and molybdenum. Often used in preference to aisi 4140 at the higher strength levels because of its better hardenability and improved cvn impact toughness. This steel can obtain much deeper hardenability than 4100 series steel. The material is is 4340 steel and the tierod will be used outdoors.
The inclusion of nickel in alloy 4340 helps simplify heat treatment. They seem pretty similar chemically and mechanically, based on the book information i have. Atlas 4340 is an alternative to atlas 6582 throughhardening steel and to jis scnm447. Pre hardened and tempered 4340 can be further surface hardened by flame or. As an added service, all of our facilities maintain processing capabilities inhouse. Improving the microstructure, mechanical and magnetic. Aisi4340, astm a 829 a6 sae j404, ams 2252 23016359 sae j404 castle metals stocks alloy 4340 plate through our global distribution network. They have a very high 96% of their average alloy composition in common.
For each property being compared, the top bar is astm a36 carbon steel and the bottom bar is normalized saeaisi 4340. Alloy steel 4340 metal supermarkets steel, aluminum. Prediction of 4340 steel hardness profile heat treated by. There are 484 suppliers who sells 4340 steel plate on, mainly located in asia.
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