4140 steel properties pdf merge

Mirraloy is a modified 41404150 steel, turned ground and polished shaft. Aircraft alloy steel aisi 4140 ams 6349 ams 6382 bar. Generating a highquality homemade knife is a perform of patience, as well as a commitment to accuracy craftsmanship. Phosphorus, p max sulfur, s max mechanical properties. Pdf effect of hot forging on 4140 steel microstructure.

The following is a comparison of 4 grade steel and 4140 grade steel. Through variations in the method of heat treating 4140, an exceptionally wide range of properties can be attained. They have an excellent strength to weight ratio and. This chromium and molybdenum based alloy is electric furnace melt, vacuum degassed, stress relieved, and machine straightened. Cut and grind to desired shape and grind in the bevels. Aisi 4, 4140, 4150, 4340, 1018, 1020 and 1045 depending upon the requirement. 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, crmo. Standard mill sizes for alloy steel 4140 round bar range from.

In this study, aisi 4140 steel industry has a large surface area of use has been modified with pulsed plasma technology aims to improve the surface properties of. Alloying elements and thermal treatments, such as quenching and tempering, greatly influence the hardness and strength of the steel. The molybdenum and chromium components give it a uniform hardness, as well as high strength. Availability alloy 4140 aisi 4140 is available in bars round bar, flat bar, square bar, hexagon bar. A wide variety of sae 4140 steel price options are available. The chromium content provides good hardness penetration, and the molybdenum imparts uniformity of hardness and high strength. Both annealed saeaisi 4140 and astm a36 carbon steel are iron alloys. 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. Uni 38 crmo 4 kb, uni 40 crmo 4, uni g 4o crmo 4 japan. The chemical properties of 4 and 4140 steel are similar aside from differences in carbon and manganese concentrations. If your material is not listed, please refer to our search help page for assistance.

Oilhardening chromiummolybdenum steel has good strength and wear resistance, excellent toughness and ductility with the ability to resist stress and creep at prolonged high temperatures up to also available in leaded grades that have greatly improved machinability, but should not be used in applications. It has the highest strength compared to the other variants of saeaisi 4140 steel. Lss 4140 and 4142ht are versatile, alloy steels that are used in a variety of tooling and other industrial applications. Mechanical properties typical values physical properties 20c 68f 34 20100c 68212 f 11. Results are displayed up to a maximum of 200 materials per page. Contact your local metal supermarkets store to confirm availability and pricing, or buy online. This information may be useful for machining purposes and as a resource for purchasing 4 and 4140 steel. The higher carbon content of aisi 4140 gives greater strength and heat treatment capabilities. Aisi 4140 alloy steel is heated at 845c 1550f followed by quenching in oil. 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. Aisi 9xxx for other aisi or nonaisi, please use the search function above or check grades. It is a sturdy alloy, largely composed of carbon, with many uses in the manufacturing trades. These products can potentially expose you to chemicals including nickel, chromium, lead, cobalt, mercury and beryllium, which are known to the state of california to cause cancer andor birth defects or other reproductive harm.

Listed below are several curves detailing the stressstrain relationship and. Mar 21, 2012 o1 4140 steel is an additional high carbon steel which supplies razor sharp edges but dulls faster than a2 steel. For more detailed information download the tech bulletin pdf below. Alloy steel aisi 4140 ph aisi 4140 ph is a quenched and tempered chromemoly steel, typically supplied at 262321 brinell. The cylindrical samples with the diameter of 8 mm, the length of 12 mm, and the end face roughness of 1. 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. Jan 16, 2012 4140 if you can source it from scrap and arent purchasing it or the grinding beltsmedia than go for it. Lowalloy steels, on the other hand, are used to achieve better hardenability, which in turn enhances other mechanical properties. Steel gradeaisi 4140 chemical information,mechanical properties. They have a very high 98% of their average alloy composition in common. It is generally supplied in the hardened and tempered condition, especially in the. Through variations in the method of heat treating 4140, an exceptionally wide range of.

Aisi 4140 is a chromium molybdenum alloy steel specification widely used in the oil and gas industry. Data is typical and should not be construed as actual values for any category. Aisi 4140 steel annealed at 815c 1500f furnace cooled 11c 20fhour to 665c 1230f, air cooled, 25 mm 1 in. Aisi 4140 alloy steel can be welded using all conventional techniques. Aisi 4140 alloy steel aisi 4140 steel stockholders and suppliers, delivering to the whole of the uk. O1 steel is more forgiving to those that will not be as completed in finding a good edge. This page is mainly introduced the aisi 4140 datasheet, including chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and micro structure, etc. It is offered in the turned ground and polished condition. Austenite grain growth behavior of aisi 4140 alloy steel. Alloy steel 4140 round bar metal supermarkets steel. Sae aisi 4140 steel properties, material heat treatment.

Aisi4140 1% cr mo steel related specifications sae 4140 uns g41400 aisi 4140 is a 1% crmo through hardening steel, used particularly where strength and impact toughness is required. A full bar means this is the highest value in the relevant set. Aisi 4140 alloy steel is a chromium, molybdenum, and manganesecontaining low alloy steel. Jun 20, 20 alloy steel is steel alloyed with different elements in total amounts between 1 and 50% by weight to enhance its mechanical properties such as strength, hardness, toughness and wear resistance. Alloy description timkensteels 4140hw grade is a finegrained, lowalloy steel that offers optimum heattreat response in heavier crosssections. Alloy steel 4140 metal supermarkets steel, aluminum. Properly hardened and formed, it can be used to make hardwearing machine parts. Applications and technical information require engineers and tool designers to exercise independent judgement. In truth its not an great blade steel as it has an lower carbon content. Machine construction, machine parts, axes, knuckles, connecting rods, crankshafts, gear shafts, pinions, gears, bandages, base plates, assembling parts. For each property being compared, the top bar is annealed saeaisi 4140 and the bottom bar is astm a36 carbon steel.

It is composed of chromium, manganese, carbon, silicon, molybdenum, sulfur and phosphorus submerged in a matrix of iron. Similar to grade aisi 4 but with a slightly higher carbon content. Because of this strength, 4140 steel is easily machined and responds well to heat treatment. Aisi 4140 steel, oil quenched, 540c f temper, 25 mm 1 in.

Physical properties, mechanical properties, heat treatment, and micro structure. Here is a list of our readily available stock of aircraft alloy steel aisi 4140 ams 6349 ams 6382. Aisi 4140 steel, oil quenched, 540c f temper, 25 mm. Speedy metals information for 4140 annealed cold roll steel. The search phrase you entered, 4140, is common to 69 materials, by searching on the term s 4140 in most common text fields. The chemical properties of 4 and 4140 steel have differences in carbon, manganese and chromium concentrations. The steel alloy of grade 8620 is also called nickelchromiummolybdenum steel. The graph bars on the material properties cards below compare quenched and tempered saeaisi 4140 to. Metaux solutions 4140 annealed is a highquality, 4140 alloy steel intended for all mechanical uses where improved machinability, uniform hardness and excellent flatness are required. Mirraloy tgp 4140 steel associated steel corporation. Follow the links below to view complete property information. Oilhardening chromiummolybdenum steel has good strength and wear resistance, excellent toughness and ductility with the ability to resist stress and creep at prolonged high temperatures up to also available in leaded grades that have greatly improved machinability, but should not be used in applications over elevated temperatures. 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.

Lss 4142ht is a similar steel which is sold prehardened to 28 to 32 hrc 269 to 302 hbw. It is generally supplied in the hardened and tempered condition, especially in the oil and gas sector to achieve. The prehardened condition is heat treated to a medium hardness hrc 2832 and is designated as 4140 ht. A number in parentheses indicates the year of last reapproval. Effect of hot forging on 4140 steel microstructure and wear resistance article pdf available in world of metallurgy erzmetall 662. O1, like a2 includes a 1% carbon content material it has 1.