M&M Quality Grinding maintains an extensive, material-diverse inventory of precision ground bar stock and optimized oversizes. In addition to our onsite inventory, we have a large in-house centerless grinding operation that provides rapid turnaround on specialty sizes and materials.
If we don’t have what you need in-stock, we’ll move to quickly find it from within our network of vendors and mills, then grind your bar stock to your precise specfications.
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—pins, dowels, shafts, bushings, gears, and so on—for aerospace, automotive, medical, and numerous other high-tech industries that need strength and machineability.
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 looks to surpass the strength and durability of carbon steel. Components made from these materials are endure and execute in some of the most demanding environments and applications, such as aerospace, defense, construction, and heavy industry.
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 devices and equipment in industries like construction, automotive, marine, and others. Components made from these “red metal” round bar stock include nozzles, fittings, valves, fasteners, pump parts, and 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 to construct military and commercial aircraft, oil and gas refinery operation equipment, and products used in marine environments. The specialty materials offer high strength at high temperatures, chemical resistance, and corrosion resistance, making it an excellent option for 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 industries, including medical, electrical, automotive, food equipment, construction, and furniture. The material’s high strength, hardness and rigidity characteristics make it ideal for gears, screws, nuts, lab equipment, medical devices, and countless other applications.
Contact M&M Grinding today to talk to our team about the precision ground bar stock requirements for your next project