Pre hardened and tempered 4140 can be further surface hardened by flame or induction hardening and by nitriding. The prehardened condition is heat treated to a medium hardness hrc 2832 and is designated as 4140 ht. Alloying elements and thermal treatments, such as quenching and tempering, greatly influence the hardness and strength of the steel. Published data showing wrought properties and reported assintered and heat treated mim parts are shown in table 1 for alloy 4140 and in table 1 for 4340. The following table shows the chemical composition of aisi 4140. The cold finished 4140 alloy steel bars are calcium treated. Flame or induction hardening can give a case hardness of 50 hrc or higher. Astm a193 specification covers requirements for chemical composition, mechanical properties, hardness, heat. The chromium content provides good hardness penetration, and the molybdenum content ensures uniform hardness and high strength. Aisi 4145 alloy steel aisi 4145 steel stockholders and suppliers, delivering to the whole of the uk.
Aisi 4140 chemical composition, aisi 4140 mechanical properties, heat treatment, aisi 4140 datasheets, aisi 4140 supplier tcpdf created date 552020 12. It is supplied as round bar commonly in the hardened and tempered condition with a hardness of 1822 hrc. Aisi 4140 steel annealed at 815c 1500f furnace cooled 11c 20fhour to 665c 1230f, air cooled, 25 mm 1 in. Alloy 4140 aisi 4140 is a low alloy steel containing chromium and molybdenum. Aisi 4145 is a chromium molybdenum alloy steel grade widely used in the oil and gas sectors. Sae 4140 aisi 4140 steel is a crmo series chrome molybdenum series low alloy steel, this material has high strength and hardenability, good toughness, small deformation during quenching, high creep strength and longlasting strength at high temperature.
Astm a 829 sae 4140 sae 4142 cr moalloyed vacuum degassed steels material data sheet edition december 2012 1 astm a 829 sae 4140 and astm a 829 sae 4142 are vacuum degassed fine grained steels which are particularly used by the customers for heavy machinery applications. Often called etd150, these rods are made from a modified version of 4140 alloy steel and have been drawn at high temperatures for excellent strength. Usa aisi 4140 astm a29a29m91 4140 astm a322 4140 astm a331 4140 cold finish sae 4140 chemical composition base material min. Effect of particle size distribution on processing and properties of. Aisi 4140 alloy steel aisi 4140 steel stockholders and suppliers, delivering to the whole of the uk. Alloy description timkensteels 4140hw grade is a finegrained, lowalloy steel that offers optimum heattreat response in heavier crosssections.
For each property being compared, the top bar is saeaisi 4140 steel and the bottom bar is saeaisi 4340 steel. Lss 4140 is the classic aisi 4140 alloy steel that is sold in the annealed condition at a hardness less than or equal to 217 hbw. Alloy 410 resists oxidation up to 1292f 700c continuously, and up to 1500f 816c on an intermittent basis. It also contains the use of astm 4140,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application. In most instances, the carbon content of the plate enables dual certification.
Aisi 4 alloy steel aisi 4 steel stockholders and suppliers, delivering to the whole of the uk. This page is mainly introduced the astm 4140 datasheet, including chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and micro structure, etc. Make every attempt to remove material stresses prior to welding, and to ensure that the weld surfaces are clean and free of contaminants, such as grease, dust, oil, etc. Aisi 4140 alloy steel is a chromium, molybdenum, and manganesecontaining low alloy steel. Data sheet lescalloy 4340 v 4340 vacarc high strength alloy steel typical composition 0. Alloy description timkensteels 4140hw grade is a finegrained, low alloy steel that offers optimum heattreat response in heavier crosssections. Alloy plate 4140 4340 8620 astm a 829 oliver steel. The addition of chromium and molybdenum as alloying elements, combined with heat treatment, provides the combined advantage of hardness, ductility, and strength. Alloy 4140 ams6349 is a low alloy steel containing. Alloy 4140 this medium carbon alloy steel grade is widely used for many applications requiring high tensile strength and ductility combined with hardness in the rc 40 range. When our phone rings with 4140 plate inquiries, many customers also tell us they are overwhelmed with supply chain complexity. Aircraft quality 4 alloy steel is a medium carbon, low alloy steel containing 0. With a lower carbon content range aisi 4 provides better. A wide variety of alloy steel 4140 sheet options are available to you, such as hot rolled, cold rolled.
Aisisae 4140 datasheet,aisisae 4140 chemical,aisisae 4140. Alloy 317l can be easily welded and processed by standard shop fabrication practices. Astm a193 grade b7 specification boltport fasteners. Aisi 4140 is a chromium molybdenum alloy steel specification widely used in the oil and gas industry. Where it makes sense, castle metals can simplify our customers. Physical condition surface condition a as forged 1 as forged or rolled b as rolled 2 pickled or blast cleaned c annealed 3 rough turned d normalized 4 cold finished. The higher carbon content of aisi 4140 gives greater strength and heat. Aisi 4140 alloy steel is chromium, molybdenum, and manganese containing low alloy steel. Through variations in the method of heat treating 4140, an exceptionally wide range of properties can be attained. Alloy astm a 514 aka t1 14 212 100 110 90 2 t transverse do not pickle destroys properties shot blast 3 5 90 100 only 4140 annealed 316 5 90 112 t transverse intended for parts to be hardened throughout if burned, edge hardening occursoffer annealing 8620 as rolled 58 412 90 2 t transverse. It also contains the use of aisi 4140,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application. The following datasheet gives an overview of aisi 4140 alloy steel.
For 4140 aircraft quality bars, refer to section h. This type of steel is also commonly referred to as a chromoly steel, or chrome moly steel. It is similar to 4140 steel which has a higher carbon level 0. Handbook of comparative handbook world steel standards. Castle metals stocks a wide range of alloy 4140 plate distributed globally from our distribution centers in the u. They have a very high 98% of their average alloy composition in common. Material stocked by atlas complies with grade as1444 grade 4140 andor astm a434. It has high fatigue strength, toughness, abrasion resistance, and torsional strength. Astm 4140 chromemolybdenum steel can be oil hardened to a relatively high level. Handbook of comparative world steel standards acknowledgements the author gratefully acknowledges the assistance of michael ling, p. Astm 4140 steel is also commonly referred to as a chromoly steel, or chrome moly steel, containing nominally 0. They worked many long hours, weekends, and holidays to researching hundreds of.
It has a very good balance of toughness, strength and wear resistance. Similar to alloy grade aisi 4 chrome moly alloy steel but with a slightly higher carbon. Related specifications astm a29a29m din en 100833 jis g4053 gb gbt 3077. Both saeaisi 4140 steel and saeaisi 4340 steel are iron alloys. This page is mainly introduced the aisi 4140 datasheet, including chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and micro structure, etc. Similar to aisi 4140 but with a higher carbon content. Aisi 4140 is 1% chromium molybdenum medium harden the capability basic cause excessive tensile metal. Machinability a6 is readily machined in the annealed condition. A wide range of mechanical properties can be obtained by tempering between.
A number in parentheses indicates the year of last reapproval. Alloy 4140 aisi 4140 is one of the most popular direct hardening crmo alloy steel plates that have the ability to develop an extensive range of hardness and strength. Alloy 321 cannot be hardened by heat treatment, only by cold working. Quite often it is chosen because of its good machinability and nondeforming characteristics in heat treatment. It has high fatigue strength, abrasion and impact resistance, toughness, and torsional strength. It responds well to heat treatment and is easy to machine in the annealed condition. Sae 4140 forged alloy steel pd plus air blower services. It shows good overall combinations of strength, toughness, wear resistance and fatigue strength. Aisi sae 4140 alloy steel is a chromium molybdenum alloy steel specification widely used in general purpose high tensile steel for components, like axles, shafts, bolts, gears and other applications.
Aisi 4140 steel bar, steel plate, flats supplier, stockist and exporter. The 4140 alloy steel grade contains chromium and molybdenum for high strength and has good machinability. En19 equivalent material with aisi 4140, din 42crmo4 en 1. Alloy plate 4140 4340 8620 astm a 829 standard specification for alloy steel plate furnished to chemical composition requirements. Engineering alloy steel material en19 yield strength.
It is widely used across numerous industries and is an excellent material choice due to its toughness, high fatigue strength, and abrasion and impact resistance. Alloy flat bar is available as coldfinished or hot rolled and has excellent hardening capabilities. Sae aisi 4140 steel properties, material heat treatment. Good through hardening properties with excellent toughness due to the low carbon and high alloy content, also suitable for nitriding. Not everyone in the industry carries astm a519 grade 4140 carbon steel alloy tubing. Aisisae 4140 grade is a versatile alloy with good atmospheric corrosion resistance and reasonable strength.
Iso9001, sgs, bv,abs product name forged alloy steel forgings material alloy steel surface black or rough turned standard aisi, astm, bs, din, gb, jis grade 4140 4 4145 434042crmo42crmo4 heat treatment annealed,normalized,quenching and. Lss 4140 and 4142ht are versatile, alloy steels that are used in a variety of tooling and other industrial applications. This material can be heat treated for higher hardness. Aisi 4 is a chromium molybdenum alloy steel specification. The 4140 alloy steel sheet has an unpolished mill surface, meets american society for testing and materials international astm a6 specifications, and has a standard tolerance. Similar to grade aisi 4 but with a slightly higher carbon content. Aisi 4140 steel is a low alloy steel containing chromium, molybdenum, and manganese.
Aisi 4 alloy steel is a medium carbon, low alloy steel in astm a29 standard. Aisi or sae 4 grade is a low alloy steel containing chromium and molybdenum as strengthening agents. Not many grades can match the versatility and usefulness of 4140. Quality management system in accordance with iso 9001. The chromium content provides good hardness penetration, and the molybdenum imparts uniformity of hardness and high strength. Technical specification of saeaisiuns system standard alloy structural steel aisi 4140 data sheet, sae 4140 chemical compositions, aisi 4140 mechanical properties from steelmaking, esr melted, blooming, hot forging,hot rolling,heat treatment, straightening, 100% ultrasonic test. Usually supplied hardened and tempered to condition t in sections up to 100mm with a tensile strength of 850 mpa and aiming for this strength range in larger sections. Astm 4140 chemical composition, astm 4140 mechanical properties, heat treatment, astm 4140 datasheets, astm 4140 supplier tcpdf created date 552020 8.
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