Aisi 4340 steel is a medium carbon, low alloy steel known for its toughness and strength in relatively large sections. Aisi 4340 is a low alloy steel containing nominally 0. It has high toughness and strength in the heat treated condition. A diehl steel representative will assist all customer requests for these products. Our cd 4340 alloy steel bars have many applications. The physical properties of aisi 4340 alloy steel are. For each property being compared, the top bar is normalized saeaisi 4150 and the bottom bar is saeaisi 4340 steel. It is used in making gun parts, engine parts such as pistons, gears and bearings, and aircraft parts such as landing gear. The search phrase you entered, 4340, is common to 61 materials, by searching on the terms 4340 in most common text fields. Also has excellent nondistorting properties for an alloy steel. Aisi 4140 steel, oil quenched, 540c f temper, 25 mm 1 in. Magnetic properties and retained austenite quantification in. That is why this steel is used to manufacture aircraft, automotive and other general engineering components.
Alloy steels contain elements such as chromium, cobalt, nickel etc. The sae 4340 steel is a kind of special alloy steel, and it contains the main alloy elements are. Customers calling us for 4340 plate a lot of times are frustrated with ontime delivery issues. Throughhardening low alloy steel bar 4340 colour code. Standard mill sizes for alloy steel 4340 steel plate range from. Both astm a36 carbon steel and normalized saeaisi 4340 are iron alloys. Aisi 4340 is also one kind of nickel chromium molybdenum steels. Aisi 4340 is a nickel chromium molybdenum alloy steel specification widely used in the oil and gas sectors. Recommended corrosion protection finish for 4340 steel. Alloy steels are designated by aisi fourdigit numbers. Magnetic properties, retained austenite, sae 4340 steel. Aisi 4340 steel stockholders and suppliers, delivering to the whole of the uk. They comprise different kinds of steels having composition exceeding the limitations of b.
Results are displayed up to a maximum of 200 materials per page. Astm 4340 steels and equilvalents chemical composition. 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. Stainless steel e4340 aircraft quality bars progressive. If your material is not listed, please refer to our search help page for assistance. Contact your local metal supermarkets store to confirm availability and pricing. A wide variety of 4340 steel plate options are available to you, such as hot rolled, cold rolled. Since weapon system components are often stored in readiness condition for. The following table shows the chemical composition of aisi 4340 alloy steel. It is known as an ultra high strength grade of steel and serves a variety of applications for highly stressed parts. 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. Aisi 4340 highstrength alloy steel, supplied in the form of an extruded bar of 25.
The material is is 4340 steel and the tierod will be used outdoors. The combination of these elements assures deep and uniform hardness when heattreated, particularly when oil quenched. With proper working and strengthening, items made from 4340 have excellent wear and durability qualities. Aisi 4340 steel is a lowalloy martensitic steel that can be heat treated to provide a wide range of hardness values. High strength in heavy sections is possible with maximum toughness and ductility. Sae 4340 steel has demonstrated interesting applications where good mechanical and magnetic properties are necessary, at a low cost. Improving the microstructure, mechanical and magnetic properties of aisi 4340 steel using the heat treatment process z. The 4340 alloy steel is a nickelchromium molybenum with a medium carbon content. It has a very good fatigue strength and resilience. The alloy has a good combination of ducility, toughness and strength along with high hardenability. Hot forged 4340 steel bar engineering steel supplier. Steel alloy 4340 provides a good balance between strength and malleability. It is a nickelchromiummolybdenum medium carbon alloy steel with deep hardenability.
Yag systems have often been used as an energy source for heat treatment in several case studies. Alloy 4340 plate is another general purpose grade of steel used for industrial and machining applications. It has excellent ductility, toughness and strength characteristics that make it useful for a variety of industries and applications. 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. Stainless steel e4340 aircraft quality bars progressive alloy. Uses this steel manufacture the product to have the higher tensile strength, and the thermal stability and toughness are higher. Alloy steel 4340 steel plate metal supermarkets steel.
Mechanical properties and microstructural features of aisi. Quenched sae 4340 steel presents a co ercive for ce of. Several common applications of 4340 steel are power transmission pipes, gears and aircraft landing equipment. 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. Where fracture toughness and impact strength are crucial, 300m is a great choice. Alloy plate 4140 4340 8620 astm a 829 oliver steel.
Aisi4340, astm a 829 a6 sae j404, ams 2252 23016359 sae j404 castle metals stocks alloy 4340 plate through our global distribution network. Average cutting force f c, feed force f f and thrust force f p are presented. Aisi 4340 steel is a medium carbon, low alloy steel. Aisi 4340 alloy steel is a heat treatable and low alloy steel containing chromium, nickel and molybdenum. Atlas 4340 is an alternative to atlas 6582 throughhardening steel and to jis scnm447. The specialty steel products are available upon request and all stock is subject to mill availability.
I am currently having a discussion about the differences between 4140 and 4340. Follow the links below to view complete property information. The search phrase you entered, 4340, is common to 61 materials, by searching on the term s 4340 in most common text fields. With one of the largest nonmill inventories in the u. The relatively high carbon content provides this alloy with superior strength in applications where severe service conditions exist. A discussion started in 2011 but continuing through 2018. In addition, the nickel in alloy 4340 increases hardenability of the steel. Alloy plate 4140 4340 8620 astm a 829 standard specification for alloy steel plate furnished to chemical composition requirements. Jade band marigold introduction atlas 4340 is a nominally 1. Prediction of 4340 steel hardness profile heat treated by. Whether you need material punched, flame cut, plasma. Aisisae 4340 alloy steel 4340 steel properties all metals.
An ironbased alloy steel, 4340 contains nickel, chromium and molybdenum. The inclusion of nickel in alloy 4340 helps simplify heat treatment. 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. 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. Alloy steel 4340 metal supermarkets steel, aluminum. Taherizadeh 3 1 department of materials engineering, isfahan university of technology, isfahan 8415683111, iran 2 central laboratory, university of isfahan, isfahan 8174673441, iran. After temperin g that value decreases, reaching the smalle st val ues after temperi ng between 300 c and 500 c. E4340 is a highly alloyed, electricfurnace processed.
Pre hardened and tempered 4340 can be further surface hardened by flame or. For each property being compared, the top bar is astm a36 carbon steel and the bottom bar is normalized saeaisi 4340. In comparison with carbon steels, alloy steels are a lot more responsive to mechanical and heat treatments. A wide variety of 4340 steel options are available to you, such as hot rolled, cold drawn, and forged. Apr 12, 2011 recommended corrosion protection finish for 4340 steel. Often used in preference to aisi 4140 at the higher strength levels because of its better hardenability and improved cvn impact toughness.
The term aircraft quality or aq steel which all of our steel carries means it. Capital steel is a distributor of 4340 grade cold drawn steel bar stock. Aisi 4340 also known as en24 comes treated in the t condition to 850 nmm 2. 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. Magnetic properties and retained austenite quantification. Throughhardening low alloy steel bar 4340 atlas steels. The following information gives an overview of 4340 steel properties, chemical composition, suppliers and etc.
Both normalized saeaisi 4150 and saeaisi 4340 steel are iron alloys. They seem pretty similar chemically and mechanically, based on the book information i have. Improving the microstructure, mechanical and magnetic. They have a very high 98% of their average alloy composition in common. Aisi 4340 alloy steel aisi 4340 steel stockholders and suppliers, delivering to the whole of the uk.
Aisisae 4340 alloy steel, 4340, is a nickelchromiummolybdenum alloy steel known for its toughness and its ability to attain high strengths in the heattreated. For permanently stressed components with large cross sections for automotive and mechanical engineering. Itemdimension is thickness in inches find your closest store 0. I am designing a tierod, a 1 meter long 14 mm diameter rod with a 30 mm threaded section at each end.
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