US 11,702,724 B2
Cobalt-chromium alloy resistant to high speed/self-coupled sliding wear
Paul Crook, Kokomo, IN (US); and Ramanathan Krishnamurthy, Carmel, IN (US)
Assigned to Haynes International, Inc., Kokomo, IN (US)
Filed by Haynes International, Inc., Kokomo, IN (US)
Filed on Mar. 24, 2021, as Appl. No. 17/211,022.
Prior Publication US 2022/0307111 A1, Sep. 29, 2022
Int. Cl. C22C 19/07 (2006.01)
CPC C22C 19/07 (2013.01) 4 Claims
OG exemplary drawing
 
1. A cobalt-based alloy resistant to high speed/self-coupled sliding wear consisting essentially of 0.83 wt. % nickel, 0.125 wt. % nitrogen, 26.85 wt. % chromium, 4.58 wt. % molybdenum, 2.33 wt. % tungsten, 2.97 wt. % iron, 0.84 wt. % manganese, 0.27 wt. % silicon, 0.065 wt. % carbon, and 0.11 wt. % aluminum, and the balance cobalt plus impurities wherein the alloy has a coefficient of friction between 0.2 and 0.3 at a load of 20N when tested using a pin-on disk method of ASTM Standard G99.