Alloy Steel 4340 Vac Melt Supplier
Alloys of this nature were not always in high demand, and their start came a little later than other metal developments. It was Julius Baur in 1865 who first patented general alloy steels. He was an American metallurgist and the steels were then produced by the Chrome Steel Co. of Brooklyn, New York. However, it was the French metallurgist Henri-Ami Brustlein who subsequently popularized the metal by further developing it. With time, there were more and more needs for a diverse field of alloyed steels. In previous eras, there were not so many large vehicles or transportation in dense circumstances crossing sophisticated infrastructure nor were there large plants and the mass-production of aviation development and aircrafts. As those eras came into the picture, however, inventions that dabbled in the alloying of various metals became critical parts of the advancement of engineering in these fields as well as the continued advancement of the science - and arguably the art as well - of metallurgy. This alloy steel 4340 Vac Melt comes according to a variety of specifications, each serving different niches of the industries choosing to commonly utilize such types of alloys. For this particular alloy, its specifications generally are codified under AMS 6414, AMS 6409, AMS 6415, AMS 6484, AMS-S-5000, DMS 1555 Gr A, BMS 7-28, BPS 299-947-055, SS 9702, PWA LCS F-17, MIL-S-8844 CL1, and MIL-S-5000, as well as others.
Chemistry of Alloy Steel 4340 Vac MeltThe chemical composition of this particular alloy includes Carbon (C), Manganese (Mn), Silicon (Si), Phosphorus (P), Sulfur (S), Chromium (Cr), Nickel (Ni), Molybdenum (Mo), and Copper (Cu). The specifications outlined for percentage by weight of each of these contained elements typically cites the following ratios: Carbon (0.38 0.43%), Manganese (0.65 to 0.90%), Silicon (0.15 to 0.35%), Phosphorus (0.01%), Sulfur (0.01%), Chromium (0.70 to 0.90%), Nickel (1.65 to 2.00%), Molybdenum (0.20 to 0.30%), and Copper (0.35%). 4340 Vac Melt typically has a density of 7.84 g/cm3 (or 0.283 lb/in3). It has a Brinell rated hardness of 217, a 10% elongation at break, a shear modulus of 80 GPa (or 11.6 ksix10^3), and an elastic modulus of 205 GPa (or 29.7 ksix10^3). In addition, this specific alloy has a yield strength of 470 MPa (or 68.2 ksi) and its ultimate tensile strength is about 745 MPa (or 108 ksi) in the annealed condition. It also has a reduction of area of about 30%.
Our Alloy Steel 4340 (Vac Melt) Products
Here at AMC we sell many kinds of alloys that are used frequently in structural components, machining parts, and a number of engine parts and gear components as well. The Federal Aviation Administration (FAA) often oversees numerous regulations that govern specifications for products used in aviation related parts. The AMC products we have available fall within the AMS specification numbers of 6409 to 6484. For this particular alloy, we offer it in the form of bars, sheets, and plates.