4130 steel properties pdf file

Both astm a36 carbon steel and normalized saeaisi 4 are iron alloys. Aisi 4 steel, annealed at 865c 1590f 1585f, furnaced cooled 11c 20fhour to 680c 1255f, air cooled, 25 mm 1 in. 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. Units of strain are inin for us customary and mm for s. Test plates then exerted three different preheat and postheat. Aisi 4140 alloy steel is heated at 845c 1550f followed by quenching in oil. With a lower carbon content range aisi 4 provides better. Aisi sae 4 alloy steel can be made into steel plate, steel sheet, round and flat steel bar, steel pipe and tube, etc. Pdf on the microstructural evolution of 4 steel during. 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.

It has low carbon content, and can be welded easily. After the melting process, the molten steel is transferred to a ladle refiner for alloy adjustments and vacuum degassing. It is very popular for welding applications and is often used in the normalized condition without further heat treatment. For the mechanical properties of 4 steel, hardening behaviors until high strain rates of 10 3. Evaluation of flow and failure properties of treated 4 steel.

On the microstructural evolution of 4 steel during hot compression. It is supplied as round bar commonly in the hardened and tempered condition with a hardness of 1822 hrc. By performing inert gas stirring under a nearperfect vacuum, impurities and harmful gases are removed. This information may be useful for machining purposes and as a resource for purchasing 4 and 4140 steel. Saeaisi wrought steels top, all iron alloys middle, and the entire database bottom. The following is a comparison of 4 grade steel and 4140 grade steel. Aisi 4 steel, normalized at 870c 1600f subcategory. Aisi 4 is a chromium molybdenum alloy steel specification. 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 steel, water quenched 855c 1570f, 595c 1100f temper, 100 mm 4 in. Properties of 4 vary according to their process routine.

This research intends to find out the optimal mechanical properties of aisi 4 steel welded by the gtaw process. 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 good harde na bil ity, good fatigue properties and excellent resistance to impact and abrasion. Aisi 4 alloy steel aisi 4 steel stockholders and suppliers, delivering to the whole of the uk. The 4 grade of chrommoly is in the hsla group of steel. Handbook of comparative world steel standards preface this is the book i never wanted to write, but always wanted to own.

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. Astm 4140 steel is also commonly referred to as a chromoly steel, or chrome moly steel, containing nominally 0. 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. The chemical properties of 4 and 4140 steel are similar aside from differences in carbon and manganese concentrations. 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. Various application for this versatile steel formulation include but. Its popularity is primarily due to its weldability, hardenability, and machinability.

Datasheet for steel grades carbon steel astm 4 astm 4 standard. The chemical properties of 4 and 4140 steel are similar aside from differences in. Smn420 oil and gas industry steel aisi 4 steel is a alloy structural steel belong to astm a29a29m steel grade standard. Alloy description timkensteels 4140hw grade is a finegrained, lowalloy steel that offers optimum heattreat response in heavier crosssections. Effects of fillerwire composition along with different pre. 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. It has the lowest strength compared to the other variants of saeaisi 4 steel.

Other materials exhibit stressstrain curves considerably different from carbon steel although still highly nonlinear. 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. It may be heat treated to produce a strong, tough core and high case hardness. Heat treatment quenching, hardening, and other thermal modifications p. Aircraft quality 4 alloy steel is a medium carbon, low alloy steel containing 0. Datasheet for steel grades carbon steel aisi 4 aisi 4 standard.

Apr 27, 2016 the material of interest is 4 steel that has undergone a heat treatment. Aisi 4 alloy steel contains chromium and molybdenum as strengthening agents. The chemical composition of aisi 4 alloy steel is listed in the following table. Aisi 4 steel, water quenched 855c 1570f, 595c 1100f. Metallurgical properties cleanliness a combination of processes with electric arc furnace and vod refining are used in the steel making. Following hardening, selected samples were examined metallographically to verify that they had been fully hardened to martensite. 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. Alloy steel saeaisi 4 is a medium carbon, low alloy steel containing 0. Furthermore, the as quenched hardnesses of r c 44, 60.

It has exceptional welding and forming properties and can also be forged, cold and hot worked, annealed, and tempered. Differences between normalized and annealed 4 steel hunker. They have a very high 98% of their average alloy composition in common. Power frequency magnetic properties and aging of 4 steel. The maximum permeability at induction of 15,000 g are also listed for 60, 400, and 1200 hz. Handbook of comparative handbook world steel standards. The nominal chemical limits or ranges in the compositions given in table 1 are subject. An analysis of the mechanical behavior of aisi 4 steel after tig and laser welding process. This type of steel is also commonly referred to as a chromoly steel, or chrome moly steel.

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. Click on the link to launch the file, or rightclick and choose save target as. Aisi 4 alloy steel is a medium carbon, low alloy steel in astm a29 standard. If it is tubing you are referring to the typical properties i can provide you. Engineering handbook steelmaking basic descriptions of making carbon, alloy, stainless, and tool steel p. A very common general purpose grade of medium carbon, crmo steel. For each property being compared, the top bar is astm a36 carbon steel and the bottom bar is normalized saeaisi 4. Sae aisi 4 chromoly steel, alloy material properties. We do shearing and cutting ams 6345 mils18729 ams 6350 ams 6351 astm 505506507 ams 2252 ams 2301 astm a 829.

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. Machining 4 steel precision parts cox manufacturing. Annealed saeaisi 4 is saeaisi 4 steel in the annealed condition. Ideal for general use when welding and moderate tensile properties are required. Aisi 4 used in oil and gas industry and large machinery structural. The material of interest is 4 steel that has undergone a heat treatment. 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. 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. This type of steel is also commonly referred to as a chromoly steel, or chromemoly steel. The unending search for novel mechanical properties has led to significant development in material with high str ength.

The graph bars on the material properties cards below compare annealed saeaisi 4 to. Chemical content identification factors and composition standards p. It is similar to 4140 steel which has a higher carbon level 0. Other materials exhibit stressstrain curves considerably different from carbonsteel although still highly nonlinear. Aisi 4 steel has a specialized chemical composition that gives it a unique set of properties.

Mechanical properties the following properties apply to material in physical condition f hardened and tempered. 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. This melting and refining process path reduces levels of elements such as phosphorus. When customers call us for 4, sometimes they also share how they struggle with price volatility.