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HP Alloys HPA COBALT Alloy 6B, Wear Resistant, (Co-Cr-W) (UNS R30016)

Category Metal , Nonferrous Metal , Cobalt Alloy , Superalloy
Manufacturer High Performance Alloys, Inc
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF HP Alloys HPA COBALT Alloy 6B, Wear Resistant, (Co-Cr-W) (UNS R30016).pdf
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Material Notes:
Cobalt 6B is a cobalt based chromium, tungsten alloy for wear environments where seizing, galling and abrasion are present. 6B is resistant to seizing and galling and with its low coefficient of friction, allows sliding contact with other metals without damage by metal pick up in many cases. Seizing and galling can be minimized in applications without lubrication or where lubrication is impractical. Metal seizing is similar to one metal piece building heat against another and they become "welded" together. Galling is when these "weld" areas break off and form an abrasive debris which creates additional abrasion problems.Alloy 6B has outstanding resistance to most types of wear. Its wear resistance is inherent and not the result of cold working, heat treating or any other method. This inherent property reduces the amount of heat treating and post machining. 6B has outstanding resistance to cavitation erosion. Steam turbine erosion shields from 6B have protected the blades of turbines for years of continuous service. 6B has good impact and thermal shock resistance resists heat and oxidation, retains high hardness even at red heat (then cooled, recovers full original hardness) and has resistance to a variety of corrosive media. 6B is useful where both wear and corrosion resistance are needed.Applications: Steam turbine erosion shields, Chain saw guide bars, High temperature bearings, Furnace fan blades, Valve stems, Food processing equipment, Needle valves, Centrifuge liners, Hot extrusion dies, Forming dies, Nozzles, Extruder screws, & many other Misc. wear surfaces. End uses for alloy 6B include half sleeves and half bushings in screw conveyors, tile making machines, rock crushing rollers and cement and steel mill equipment. Alloy 6B is well suited for valve parts, pump plungers.Data provided by High Performance Alloys, Inc.
Physical Properties Metric English Comments
Density 8.39 g/cc
0.303 lb/in³
Mechanical Properties Metric English Comments
Hardness, Brinell 346
346
Estimated from Rockwell C
Hardness, Knoop 413
413
Estimated from Rockwell C
Hardness, Rockwell A 69.5
69.5
Estimated from Rockwell C
Hardness, Rockwell C 36 - 40
36 - 40
Hardness, Vickers 362
362
Estimated from Rockwell C
Tensile Strength, Ultimate 1000 MPa
145000 psi
Tensile Strength, Yield 621 MPa
90100 psi
Elongation at Break 12 %
12 %
Thermal Properties Metric English Comments
Specific Heat Capacity 0.420 J/g-°C
0.100 BTU/lb-°F
Thermal Conductivity 14.8 W/m-K

@Temperature 0.000 - 100 °C
103 BTU-in/hr-ft²-°F

@Temperature 32.0 - 212 °F
Component Elements Properties Metric English Comments
Carbon, C 0.90 - 1.4 %
0.90 - 1.4 %
Chromium, Cr 28 - 32 %
28 - 32 %
Cobalt, Co 65 %
65 %
As remainder
Iron, Fe <= 3.0 %
<= 3.0 %
Manganese, Mn <= 2.0 %
<= 2.0 %
Molybdenum, Mo <= 1.5 %
<= 1.5 %
Nickel, Ni <= 3.0 %
<= 3.0 %
Tungsten, W 3.5 - 5.5 %
3.5 - 5.5 %
Electrical Properties Metric English Comments
Electrical Resistivity 0.000120 ohm-cm
0.000120 ohm-cm
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