M&M Quality Grinding maintains an extensive inventory of precision ground bar stock and optimized oversizes in a wide range of material grades. In addition to our inventory-on-hand we have a large in-house centerless grinding operation that can provide quick turn around on specialty sizes and materials.
If we don’t have what you need in-stock, we have access to an extensive network of material vendors and mills and can obtain it quickly to precision grind to your exact specifications.
Our Bar Stock Materials
Stainless Steel Precision Ground Bar Stock
Grades we stock and centerless grind regularly: 303, 304/304L, 316/316L, 321, 347, 410, 420, 430, 440A, 440C , 440FSE, 17-4 PH, 17-4 H900, 17-4 H1025, 17-4 H1150, Nitronic 50, Nitronic 60
Precision ground stainless steel round bar stock is suitable for a wide range of components used in medical and pharmaceutical instruments and equipment, automotive and truck equipment assemblies, food and beverage processing equipment, oil and gas refinery and distribution equipment, knife blade manufacturing, sporting goods equipment, and many specialty products requiring the combination of high strength, heat resistance, high luster and rust prevention.
Carbon Steel Precision Ground Bar Stock
Grades we stock and centerless grind regularly: 1018, 1026, 1035, 1045, 1050, 1060, 1117, 11L17, 1141, 11L41, 1144, 12L14, 1215, Stressproof / A311, Fatigueproof
Precision ground carbon steel round bar stock is suitable for thousands of component applications including pins, shafts, dowels, axles, pinions, gears, inserts, bushing, fittings, and many others for the automotive, medical, transportation, marine, aerospace, military, defense, agriculture, mining, hydraulics, and industrial products markets where the need for strength, machinability, and heat treating is required.
Alloy Steel Precision Ground Bar Stock
Grades we stock and centerless grind regularly: 4130, 4130HT, 4140, 4140 HT, 41L40, 41L40 HT, 4142, 4142 HT, 4150, 4150 HT, 4340, 52100, 6150, 8620, 86L20, ETD 150, 9310
Precision ground alloy steel round bar stock is widely used across many industry segments when there is a need for high strength, high toughness, corrosion, wear resistance and high toughness (compared to carbon steel). Components made from these materials are found in products and equipment in some of the most demanding environments and applications used in aerospace, automotive and transportation, heavy industrial and construction markets.
Aluminum Precision Ground Bar Stock
Grades we stock and centerless grind regularly: 1100, 2014, 2021, 2021, 2219, 5083, 5086, 6061, 6063, 7049, 7050, 7075, 7076, 7079, 7175, 7475
Components machined from precision ground aluminum round bar stock are used in many industries, including aerospace, medical, automotive and industrial. Aluminum’s high strength and high heat resistant properties, combined with low weight and corrosion resistance make it an excellent choice for a variety of components. Precision ground bar stock out of aluminum is regularly found in airplane frames and wall panels, medical devices and equipment, oil drilling and petroleum refinery equipment, automotive and truck frame components, electrical distribution equipment, marine vessel components, rail car assemblies, office and home furniture components and building construction products.
Copper / Brass / Bronze Precision Ground Bar Stock
Grades we stock and centerless grind regularly:
Bronze: 614, 630, 642, 655, 660, 932, 954, CDA954
Copper: 101, 102, 110, 145, 172 (Beryllium Copper), Class2, C613, C623, C624, C30, C632, C70600, C70610, C70690, C71500
Brass: 314, 360, 385, 464, 510, 544
Components machined from copper, brass or bronze centerless ground bar stock have exceptional electrical and thermal conductivity, corrosion resistance, ductility and strength. They can be found in a wide range of products, devices and equipment in the construction, automotive, marine, industrial and others. Components made from these “red metal” round bar stock include nozzles, fittings, valves, fasteners, pump parts, marine hardware.
Specialty Nickel Alloy Precision Ground Bar Stock
Grades we stock and centerless grind regularly: Monel, Inconel® and many more
Components made from specialty nickel alloy precision ground bar stock are used in aircraft construction (commercial and military), oil and gas refinery operation equipment, and products used in marine environments. The specialty materials offer high strength at high temperatures, high chemical resistance, and high corrosions resistance, making it an excellent option for many highly demanding applications.
Thermoplastic Precision Ground Bar Stock
Grades we stock and centerless grind regularly: Delrin, acetal
Products machined from acetal and Delrin are used by many industries including medical, electrical, automotive, food equipment, construction, and furniture. The material’s high strength, hardness and rigidity characteristics make it attractive for gears, screws, nuts, pumps parts, valve bodies, car door and window system assemblies, lab equipment, medical devices, housings, and conveyor components to name a few.
Contact M&M Grinding today to talk to our team about the precision ground bar stock requirements for your next project