George Metals, based in Houston, USA, is a reliable manufacturer and supplier of Cobalt Alloy 6B Bars and Rods, celebrated for their outstanding wear resistance, corrosion resistance, and mechanical stability even at high temperatures. Cobalt Alloy 6B, also referred to as UNS R30016, is a cobalt-chromium-tungsten alloy that’s designed for the toughest environments, where resistance to galling, erosion, and thermal fatigue is crucial. George Metals provides these bars and rods in various sizes and finishes, all crafted in line with ASTM F90 and other industry standards. They find extensive applications in aerospace, chemical processing, power generation, and valve industries.
Cobalt Alloy 6B Bars and Rods from George Metals typically consist of around 60% cobalt, 28–32% chromium, 4.5–6% tungsten, and 1.5% carbon, along with trace elements of iron, nickel, and silicon. This alloy boasts a tensile strength of about 965 MPa, a yield strength of roughly 485 MPa, and impressive hardness (~35 HRC) even at elevated temperatures. It retains excellent mechanical properties during thermal cycling and effectively resists galling and metal-to-metal wear without needing lubrication, making it perfect for highly abrasive and high-friction settings.
| Cobalt Chromium Molybdenum Alloy | CoCrMo |
|---|---|
| AMS | AMS 5788 |
| Grade | Cobalt Alloy Round Bars |
| Dimensions | DIN, ASME, AISI, BS, ASTM, EN, JIS, |
| Length | 1 to 6 Meters, Custom Cut Lengths |
| Manufacturing all types of Cobalt Alloy Rods | Forging, Square, Round, Ingot, Hex(A/F), Rectangle, Billet, |
| Other forms available | Seamless Tube, Pipe, Rods, Bars, Fittings, Flanges, Plate, Strip, Sheet, Plate, Coil, wire etc. |
| Grade | C | Mn | P | S | Si | Ni | Cr | Fe | W | Mo |
| Cobalt 6B | .90 – 1.40 | 2.0 max | – | – | 2.0 max | 3.0 max | 28.0 – 32.0 | 3.0 max | 3.50 -5.50 | 1.50 max |
| CONDITION | TENSILE STRENGTH | YEILD STRENGTH | ELOGNATION |
|---|---|---|---|
| ANNEALED |
80 (551) |
35 (241) |
30 |
| STANDARD | WERKSTOFF NR. | UNS |
| Cobalt 6B | – | R30006 |
George Metals’ Cobalt Alloy 6B Bars and Rods are extensively utilized in industrial valves, pump components, bearings, nozzles, cutting tools, and high-wear surfaces across aerospace, nuclear, chemical, and oil & gas sectors. Thanks to its exceptional resistance to galling, cavitation, erosion, and corrosive environments, Alloy 6B is also well-suited for steam turbine parts, gate valves, extrusion dies, and marine equipment. The alloy performs reliably under extreme temperatures and heavy mechanical stress, making it a go-to material for mission-critical components. George Metals guarantees that each bar and rod is precision-forged to ensure maximum strength and wear resistance.






We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
George Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Houston, USA
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