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Cobalt Alloy 6B is a wrought base-cobalt alloy. It is used in applications where wear, corrosion and high temperature resistance are needed. It is most commonly found in directional drilling tools, aerospace applications, valve parts, shaft sleeves and knives.

Component Elements Properties Percent
Cobalt balance
Nickel (maximum) 3%
Silicon (maximum) 2%
Iron (maximum) 3%
Manganese (maximum) 2%
Chromium 28-32%
Molybdenum (maximum) 1.5%
Tungsten 3.5-5.5%
Carbon .9-1.4%

Mechanical Properties (Min) (Solution Treated)

Property Value
Tensile Strength 130 ksi
Yield Strength at 0.2% Offset 70 ksi
Elongation in 4D 5%
Reduction of Area 7%

Select AMS Number:

AMS Number Alloy Type UNS Cross Ref. Spec Misc./Shape
AMS 5894 6B Cobalt R30016  
AMS 5894 Bar 6B Cobalt R30016 - Bar AMS 5894 Bar
AMS 5894 Plate 6B Cobalt R30016 - Plate AMS 5894 Plate
AMS 5894 Sheet 6B Cobalt R30016 - Sheet AMS 5894 Sheet