4140 HT Turned, Ground & Polished Precision Shafting material is quench & tempered, stress relieved, machine straightened and turned ground & polished.I.T.S. stocks this grade in both metric and standard sizes. Alloy 4140 is widely used as an alternative to carbon steel where strength and 4140 Hot Rolled Heat Treated Round Bar Midwest Steel 4140 Hot Rolled Heat Treated Round Bar 4140 is a widely used medium carbon steel. A general purpose alloy, has good strength, toughness and hardness. Refered to as chromoly steel, due to the inclusion of.95% chromium and.20% molybdenum alloying elements.
Sep 07, 2012 · Heat Treatment AISI 4140 alloy steel is heated at 845°C (1550°F) followed by quenching in oil. Before hardening, it can be normalized by heating it at 913°C (1675°F) for a long period of time, followed by air cooling. Alloy Steel Products:4140 Heat Treated (HT) - 4140 Annealed4140 Heat Treated is a chromium-molybendium alloy steel. 4140 HT is the most commonly used high tensile steel with endless applications including everything from gears and pumps to various applications in the automotive and construction industry. 4140 HT has a medium hardness of 28/32 HRC. 4140 Annealed Alloy Steel How to heat treat 4140 - The Home Machinist!Mar 20, 2011 · Re:How to heat treat 4140. Heat to 1500-1600° F and hold 1-1/2 hour per inch of greatest thickness. Quench into 150° F oil. Temper immediately after quenching, before the part has cooled to below 150° F. Parts should be held 1 hour per inch of thickness, 2 hours minimum. A single temper is sufficient.
AISI 4140 steel must be preheated to avoid the:Formation of hard microstructures such as martensite and Bainite in the weld and HAZ. Allow weld to slow cool thus help to release residual stresses. Allow the release of weld metal hydrogen. The AISI 4140 steel is recommended to preheat:Up to ½ inch (12 mm) thickness:400- 500 (200- 250 Specialty Steel Co. 4140 Prehard Heat Treated Bars Jun 03, 2016 · 4140 & 4150 HOT ROLLED HEAT TREATED (Rc 28/34) BAR STOCK We stock AISI 4140 and AISI 4150 steel in rounds, squares, and flats. All material is provided in a hot roll finish. Call or Email Us For a Free Quote. Speedy Metals - Alloy Round - 4140 - Hot Rolled - Heat Alloy Round 4140 Hot Rolled Heat Treated. 4142 HRHT can be used for as wide variety of applications where greater toughness and wear resistance is needed over lower carbon grades. Typical applications include ejectors, back up and support tooling, cams, drill collars, bolts, studs, couplings, reamer bodies, axles, shafting, piston rods, rams
Steel Grade AISI 4140 This medium carbon alloy grade is widely used for many general-purpose parts requiring high tensile strength and toughness. 4140 contains chromium and molybdenum as alloying elements and may be heat treated over a wide range to give the combined advantages of proper hardness, strength and ductility.Technical Information:4140 HT - SB Specialty Metals4140 HT Surface Hardening . 4140 HT is a medium carbon alloy steel heat treated to a . nominal hardness of 28-32 HRC. 4140 HT can also be surface hardened to increase wear resistance . Typical Chemical Composition