Pdf an analysis of the mechanical behavior of aisi 4 steel. It is stocked in asdrawn, stressrelieved, normalized, or quenched and tempered condition, is not subject to temperembrittlement, and responds to nitriding. This means that technically 4 lives smack dab equally distant between 1020 mild steel and 4140. Listed below are several curves detailing the stressstrain relationship and. Aisi 4 steel, annealed at 865c 1590f 1585f, furnaced cooled 11c 20fhour to 680c 1255f, air cooled, 25 mm 1 in. Aisi 1018 mildlow carbon steel offers a good balance of toughness, strength and ductility. Broaching is also performed on arbor presses manual and.
Properly hardened and formed, it can be used to make hardwearing machine parts. Examples of alloys are iron and carbon, forming steel, and the great. Aisi 4 alloy steel aisi 4 steel stockholders and suppliers, delivering to the whole of the uk. It is a sturdy alloy, largely composed of carbon, with many uses in the manufacturing trades. Exstock aisi 45 alloy, sae 45 chemical, aisi 45 mechanical properties from steelmaking, esr melted, blooming, hot forging,hot rolling,heat treatment, straightening, 100% ultrasonic test, cold working, peeled or rough turned machining. This product is for building up limited joining of aisi 4 steels when heat treatment or flame hardening is required. 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. It is similar to 4140 steel which has a higher carbon level 0. The following is a comparison of 4 grade steel and 4140 grade steel. Our 4140 cold drawn steel bar stock comes in rounds and flats and can be custom ordered to fit your needs. This article belongs to the special issue laser materials fabrication and joining.
Typicalapplications productiontolerances aerospacecomponentmanufacture gears automotiveparts rockcrushingmachinery usedforresistancewelding bearings cuttingtools productdescription 4isachromiummolybdenumalloywhichisofthe. The chemical properties of 4 and 4140 steel are similar aside from differences in carbon and manganese concentrations. Chromoly 4 steel can be cold worked using conventional methods. Astm a519 alloy steel pipe anyang general international co. Please note that the two materials have significantly dissimilar. If you cant find the type of china steel comparison youre looking for, send us a message with your inquiry and well get back to you with an answer shortly. The chemical composition of aisi 4 alloy steel is listed in the following table. Speedy metals information for 4140 hot roll rounds annealed. For each property being compared, the top bar is astm a36 carbon steel and the bottom bar is normalized saeaisi 4. The maximum permeability at induction of 15,000 g are also listed for 60, 400, and 1200 hz.
An analysis of the mechanical behavior of aisi 4 steel. Chromoly 4 steel can be easily machined using standard techniques. Pdf metallic materials have received special attention in the aerospace and defense areas. Annealed saeaisi 4 is saeaisi 4 steel in the annealed condition. It has the highest strength compared to the other variants of saeaisi 4 steel. 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. Through variations in the method of heat treating 4140, an exceptionally wide range of properties can be attained. In the acs website, everything is 4 for round tubes and plates, no n. It is very popular for welding applications and is often used in the normalized condition without further heat treatment. This information may be useful for machining purposes and as a resource for purchasing 4 and 4140 steel. Lss 4140 and 4142ht are versatile, alloy steels that are used in a variety of tooling and other industrial applications.
These facilities allow for very low levels of impurities oxygen especially. Carbon steel 4 aircraft quality 4 steel is a medium carbon, low alloy steel containing 0. The chemical composition for the aisi 4 steel is shown in table 1 and fig. Aisi 4 alloy steel is a medium carbon, low alloy steel in astm a29 standard. A toroid sample was prepared from six rings machined from an 0. Fracture toughness behaviour in aisi 4 steel of electron. American iron and steel institute aisi 1140 connecticut ave. Aisi 1018 mildlow carbon steel aisi 1018 mildlow carbon steel has excellent weldability and produces a uniform and harder case and it is considered as the best steel for carburized parts. With a lower carbon content range aisi 4 provides better. Hot working of chromoly 4 steel steel can be done at 816 to 1093c 1500 to 2000f. Apr 27, 2016 the material of interest is 4 steel that has undergone a heat treatment. Aisi 4, 4140, 4150, 4340, 1018, 1020 and 1045 depending upon the requirement. The 4 alloy steel bar contains chromium and molybdenum elements, and as a consequence, 4 is often referred to in the industry by the name of chromoly. It is composed of chromium, manganese, carbon, silicon, molybdenum, sulfur and phosphorus submerged in a matrix of iron.
Using 4140 alloy on your suspension parts verses 4. Aisi 4 alloy steel contains chromium and molybdenum as strengthening agents. The graph bars on the material properties cards below compare quenched and tempered saeaisi 4 to. Applications of aisi 1018 mildlow carbon steel it is used in bending, crimping and swaging processes. Exstock aisi 45 alloy, sae 45 chemical, aisi 45 mechanical properties from steelmaking, esr melted, blooming, hot forging,hot rolling,heat treatment, straightening, 100% ultrasonic test.
Posted by william dominguez on february 9, 2012 at 5. Properties with values for just one material 1, in this case are not shown. If it is tubing you are referring to the typical properties i can provide you. The steel alloy of grade 8620 is also called nickelchromiummolybdenum steel. Download this datasheet as pdf 4140 high tensile steel 4140 is a 1% chromium molybdenum medium hardenability general purpose high tensile steel generally supplied hardened and tempered in the tensile range of 850 mpa condition t. Aq 4 ht, stocked in rounds, hex, squares and flat bar.
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. Students learn about iron and steel through discussions, demonstrations and suggested optional activities. 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. China steel steelfromchina steel suppliers china steel. Gost09ch16n4b to aisi 4 with increasing the tempering temperature. A full bar means this is the highest value in the relevant set.
Sheet steel or strip steel that is manufactured by 1 press braking blanks sheared from sheets or cut length of coils or plates, or by 2 continuous roll forming of cold or hotrolled coils of sheet steel. 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. Mechanical properties of dissimilar welds between aisi 4 and. Both astm a36 carbon steel and normalized saeaisi 4 are iron alloys. 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. Metallurgical relaxation of the 4 microstructure could compromise mechanical properties. They have a very high 98% of their average alloy composition in common. The world material is a website mainly provides the information of worldwide material grades, including us astm aisi sae, european en, british bs, germany din, france nf. It is supplied as round bar commonly in the hardened and tempered condition with a hardness of 1822 hrc. It has the lowest strength compared to the other variants of saeaisi 4 steel.
The chromium content provides good hardness penetration, and the molybdenum imparts uniformity of hardness and high strength. Aisi 1018 mildlow carbon steel after being heated is moistened in oil or water. Evaluation of flow and failure properties of treated 4. Astm a519, sae 4, ams 6360, ams 6371, milt6736 british. Astm a36 steel is the most common type of steel used in construction. The material of interest is 4 steel that has undergone a heat treatment. They have an excellent strength to weight ratio and are considerably.
Chrome alloy steels, such as 4, 4140, and 4340 are so named because. This work documents ac magnetic properties and some aging information on a 4 steel. Laser surface transformation hardening lsth of aisi 4 was investigated by a nd. With a lower carbon content range aisi 4 provides better weldability, at the expense of through thickness strength, than that of other oil and gas steel grades such as aisi 4140. Aisi 4140 alloy steel is heated at 845c 1550f followed by quenching in oil. Its properties allow the steel to be used in many applications, unlike higherperformance alloys. With high chromium content, 4140 bars have high hardenability, and the molybdenum content provides high strength and uniformity of hardness.
Astm 4140 steel is also commonly referred to as a chromoly steel, or chrome moly steel, containing nominally 0. Saeaisi wrought steels top, all iron alloys middle, and the entire database bottom. Aisisae 45 datasheet,aisisae 45 chemical,aisisae 45. Aisi 4 alloy steel pipe fittings suppliers a234 g40. A36 steel is the american society for testing and materials astm designation for carbon steel. The thickness of bare steel exclusive of all coatings. For more detailed information download the tech bulletin pdf below.
Metallurgical properties cleanliness a combination of processes with electric arc furnace and vod refining are used in the steel making. Pdf characterization of case hardened aisi 4 steel using. Power frequency magnetic properties and aging of 4 steel. A very common general purpose grade of medium carbon, crmo steel. Quenched and tempered saeaisi 4 belongs to the iron alloys classification, while we54a magnesium belongs to the magnesium alloys. The chemical properties of 4 and 4140 steel are similar aside from differences in. Aisi 4 is a chromium molybdenum alloy steel specification. Product information 4 chrome moly performance metals. When customers call us for 4, sometimes they also share how they struggle with price volatility. In this paper eddy current testing response is analyzed for the aisi 4 samples to determine the mechanical properties of the material. Fracture toughness behaviour in aisi 4 steel of electron beam welding jiliang doong, jingming chi and yenhung tan department of mechanical engineering, national central university, chungli, taiwan, r. Aisi 4 steel, normalized at 870c 1600f subcategory. Lss 4142ht is a similar steel which is sold prehardened to 28 to 32 hrc 269 to 302 hbw.
Alloy description timkensteels 4140hw grade is a finegrained, lowalloy steel that offers optimum heattreat response in heavier crosssections. The graph bars on the material properties cards below compare annealed saeaisi 4 to. Its popularity is primarily due to its weldability, hardenability, and machinability. Properties of 4 vary according to their process routine. Evaluation of flow and failure properties of treated 4 steel. In the plans, i see 4n for round tubes and 4 for plates. It has low carbon content, and can be welded easily. Aisi 4140 alloy steel can be welded using all conventional techniques. Japanese jis and chinese gb standard, so you can learn and compare the material datasheet and specification of the major countries.
942 839 669 101 802 1434 352 1333 170 1262 1406 1566 804 776 1407 808 914 1124 369 1462 1516 1315 1239 976 1058 714 1412 928 467 214 1145 915 456 70 1140 643 1051