300M is a low alloy vacuum melted steel of very high strength. It is a modified AISI 4340 with silicon, vanadium and slightly higher carbon and molybdenum content that 4340. It has a very good combination of strength and toughness, fatigue, strength and good ductility. It is a through hardened alloy. 300M/S155- High Performance Alloy Steel Available from 300M/S155 is a high performance alloy steel which is a vacuum melted grade, supplied in the normalised and tempered/softened condition to enhance machinability prior to final heat treatment.
300M HIGH TENSILE 300M is a low alloy vacuum melted steel of very high strength. It is a modified AISI 4340 with silicon, vanadium and slightly higher carbon and molybdenum content that 4340. It has a very good combination of strength and toughness, fatigue, strength and AISI 300M Alloy Steel (UNS K44220) - AZoM
- IntroductionOther DesignationsMachinabilityWeldingHeat TreatmentCold WorkingAnnealingAlloy steels are designated by AISI four-digit numbers. They contain different kinds of steels having compositions which exceed the limitations of B, C, Mn, Mo, Ni, Si, Cr, and Va set for carbon steels. AISI 300M alloy steel is a low alloy and vacuum melted steel. It is a modified version of AISI 4340 steel. It has high content of molybdenum and silicon than that of AISI 4340 steel. It has high strength, good toughness, fatigue strength and ductility. The following datasheet gives more details about the AISI 300300M ALLOY In Stock Castle Metals Site"You've been inactive for a while. For your security, we will automatically log you off in approximately one minute unless you click Stay Online to continue. Or you can click Log Off Now if you are done"
ATA SHEET - customer.cartechLESCALLOY 300M-HS VAC-ARC steel is a modified 4340 steel with added silicon allowing for use of a higher tempering temperature. The steel has high hardenability and strength with good ductility and toughness in heavy sections, which make it suitable for aircraft landing gear, flap tracks, and other structural components.
Feb 09, 2004 · You are right, as the steel we used is definitely a maraging type steel. Another confusing set of nomenclature as we always talked about 300M as a maraging steel. That is why I worded my response as the heat treatments were so different. It is a wonder we never encountered a problem when we called out 300M. Correlation of microstructure with mechanical properties 300M steel was subjected to a wide range of quenched and tempered heat treatments. The plane-strain fracture toughness and the tensile ultimate and yield strengths were evaluated. Results indicate that substantial improvement in toughness with no loss in strength can be accomplished in quenched and tempered steel by austenitizing at 1255 K (1800°F) or higher. Grade 300M Alloy Steel McMaster-CarrSpecifications Met:ASTM A579 A modified version of 4340 alloy steel, 300M is used in applications that require high yield strength, such as torsion bars and drive shafts. This material has been normalized for consistent hardening and machining. For technical drawings and 3-D models, click on a part number.
Omega Seamaster Diver 300 M Steel on Chrono24. Daily new offers. In stock now. Safe favorite watches & buy your dream watchRickard Metals 300M Alloy SteelAug 15, 2014 · Used in heavy-duty applications requiring toughness and durability, 300M material is most popular in aerospace and industrial spaces including aircraft landing gear, high-strength bolting, and structural engineering. 300M steel is in practicality a form of AISI 4340, modified for increased strength.