4130 steel properties pdf file

Click on the link to launch the file, or rightclick and choose save target as. Sae aisi 4 chromoly steel, alloy material properties. It has good harde na bil ity, good fatigue properties and excellent resistance to impact and abrasion. Machining 4 steel precision parts cox manufacturing. Aisi 4 steel uns g40, also known as 4 chromoly steel, is a chromemolybdenum series low alloy steel with high strength, toughness and hardenability, usually used in quenched and tempered condition. This type of steel is also commonly referred to as a chromoly steel, or chromemoly steel. For each property being compared, the top bar is astm a36 carbon steel and the bottom bar is normalized saeaisi 4. If it is tubing you are referring to the typical properties i can provide you. Aisi 4 steel, normalized at 870c 1600f subcategory. Aisi 4 steel, water quenched 855c 1570f, 595c 1100f temper, 100 mm 4 in. However, the mechanical properties of this steel will be affected if it is welded in the heattreated condition, and postweld heat treatment should be performed. Aisi 4 alloy steel aisi 4 steel stockholders and suppliers, delivering to the whole of the uk.

Differences between normalized and annealed 4 steel hunker. Technical specification of saeaisiuns system standard alloy structural steel aisi 4 data sheet, sae 4 chemical compositions, aisi 4 mechanical property from steelmaking, esr melted, blooming, hot forging,hot rolling,heat treatment, straightening, 100% ultrasonic test, cold working, peeled or rough turned machining. Smn420 oil and gas industry steel aisi 4 steel is a alloy structural steel belong to astm a29a29m steel grade standard. Heat treatment quenching, hardening, and other thermal modifications p. It also contains the use of aisi 4,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application. Handbook of comparative handbook world steel standards. Properties of 4 vary according to their process routine. Test plates then exerted three different preheat and postheat. Ideal for general use when welding and moderate tensile properties are required. Furthermore, the as quenched hardnesses of r c 44, 60. Pdf on the microstructural evolution of 4 steel during. This information may be useful for machining purposes and as a resource for purchasing 4 and 4140 steel.

The chemical properties of 4 and 4140 steel are similar aside from differences in. Our 4 alloy steel carries the term aircraft quality aq which means it is generally acceptable for use in aircraft parts, but still subject to magnetic particle inspection. It may be heat treated to produce a strong, tough core and high case hardness. Aisi 4 steel, water quenched 855c 1570f, 595c 1100f. An analysis of the mechanical behavior of aisi 4 steel after tig and laser welding process. Following hardening, selected samples were examined metallographically to verify that they had been fully hardened to martensite. The maximum permeability at induction of 15,000 g are also listed for 60, 400, and 1200 hz. Its popularity is primarily due to its weldability, hardenability, and machinability. Saeaisi wrought steels top, all iron alloys middle, and the entire database bottom. The unending search for novel mechanical properties has led to significant development in material with high str ength. When customers call us for 4, sometimes they also share how they struggle with price volatility. The chemical properties of 4 and 4140 steel are similar aside from differences in carbon and manganese concentrations.

Evaluation and correlation of dynamic flow, failure, and microstructural properties of heattreated 4 steel by defense technical information center. Various application for this versatile steel formulation include but. It has exceptional welding and forming properties and can also be forged, cold and hot worked, annealed, and tempered. The characteristic magnetic properties of the 4 steel are listed in the table 1 for exposure to alternating magnetic fields, with peak field strengths of 111 and 112 oe. Aisi 4 is a chromium molybdenum alloy steel specification. This type of steel is also commonly referred to as a chromoly steel, or chrome moly steel. Effects of fillerwire composition along with different pre. Alloy description timkensteels 4140hw grade is a finegrained, lowalloy steel that offers optimum heattreat response in heavier crosssections. The 4 grade of chrommoly is in the hsla group of steel.

Mechanical properties the following properties apply to material in physical condition f hardened and tempered. A very common general purpose grade of medium carbon, crmo steel. Engineering handbook steelmaking basic descriptions of making carbon, alloy, stainless, and tool steel p. By performing inert gas stirring under a nearperfect vacuum, impurities and harmful gases are removed. It has low carbon content, and can be welded easily. Datasheet for steel grades carbon steel aisi 4 aisi 4 standard. Both astm a36 carbon steel and normalized saeaisi 4 are iron alloys. Aisi 4 alloy steel contains chromium and molybdenum as strengthening agents. Evaluation of flow and failure properties of treated 4 steel. The chemical composition of aisi 4 alloy steel is listed in the following table.

The graph bars on the material properties cards below compare annealed saeaisi 4 to. Aisi 4140 alloy steel is heated at 845c 1550f followed by quenching in oil. Apr 27, 2016 the material of interest is 4 steel that has undergone a heat treatment. Aisi 4 alloy steel is a medium carbon, low alloy steel in astm a29 standard. It is similar to 4140 steel which has a higher carbon level 0. Alloy steel saeaisi 4 is a medium carbon, low alloy steel containing 0. This melting and refining process path reduces levels of elements such as phosphorus.

Aisi 4 steel has a specialized chemical composition that gives it a unique set of properties. Other materials exhibit stressstrain curves considerably different from carbonsteel although still highly nonlinear. Other materials exhibit stressstrain curves considerably different from carbon steel although still highly nonlinear. It is very popular for welding applications and is often used in the normalized condition without further heat treatment. Aisi sae 4 alloy steel can be made into steel plate, steel sheet, round and flat steel bar, steel pipe and tube, etc. The compositions in this document may apply to open hearth and basic oxygen, or electric furnace steels. They have an excellent strength to weight ratio and are considerably. Annealed 4 steel is first manipulated to drawing specifications, heated above its critical austenitizing temperature, 1675 f 910 c, quenched, and then tempered at 1050 f 566 c until it reaches a strength of 120140 ksi 827965 mpa. For the mechanical properties of 4 steel, hardening behaviors until high strain rates of 10 3. It also contains the use of astm 4,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application. Astm 4140 steel is also commonly referred to as a chromoly steel, or chrome moly steel, containing nominally 0.

Evaluation of flow and failure properties of treated 4. The material of interest is 4 steel that has undergone a heat treatment. Datasheet for steel grades carbon steel astm 4 astm 4 standard. Chemical content identification factors and composition standards p. On the microstructural evolution of 4 steel during hot compression. Handbook of comparative world steel standards preface this is the book i never wanted to write, but always wanted to own. Alloying elements include chromium and molybdenum, and as a result these materials are often informally referred to as chromoly steel common variant stylings include chromemoly, cromoly, crmo, crmo, crmoly, and similar.

Aisi 4 used in oil and gas industry and large machinery structural. Pdf an analysis of the mechanical behavior of aisi 4. Grade alloy 4, aisi 4, uns g40 castle metals stocks a wide range of alloy 4 in bar distributed globally from our distribution centers in north america, as well as in the u. Although 4 is not lighter than general steels, its higher specific strength ratio enables the engineers to reduce the weight of designs by using thinner thicknesses.

The nominal chemical limits or ranges in the compositions given in table 1 are subject. Six test plates were joined by two types of filler wire with similar chemical composition to the base metal, and with lower carbon content and slightly higher alloy elements content compared to the first one. Aircraft quality 4 alloy steel is a medium carbon, low alloy steel containing 0. As a metallurgical engineer and long time user of steel standards, author of the four casti metals data books, and member of astm a01 and b02 standard committees, i knew all too well the many pitfalls and challenges of. Units of strain are inin for us customary and mm for s. We do shearing and cutting ams 6345 mils18729 ams 6350 ams 6351 astm 505506507 ams 2252 ams 2301 astm a 829. It is supplied as round bar commonly in the hardened and tempered condition with a hardness of 1822 hrc. After the melting process, the molten steel is transferred to a ladle refiner for alloy adjustments and vacuum degassing. Aisi 4 steel, annealed at 865c 1590f 1585f, furnaced cooled 11c 20fhour to 680c 1255f, air cooled, 25 mm 1 in. They have a very high 98% of their average alloy composition in common. Though this subject testing identified a few issues that need to be addressed, the flash bainite processing of 4 steel demonstrates promise for applications needing a combination of high strength with good elongation, ductility, and toughness e. It has the lowest strength compared to the other variants of saeaisi 4 steel.

Metallurgical properties cleanliness a combination of processes with electric arc furnace and vod refining are used in the steel making. The following is a comparison of 4 grade steel and 4140 grade steel. These facilities allow for very low levels of impurities oxygen especially. Grades shown in table 1 with prefix letter e are normally made by the electric furnace process with maximum limits of 0. Power frequency magnetic properties and aging of 4 steel. Annealed saeaisi 4 is saeaisi 4 steel in the annealed condition.