US 12,134,147 B2
Systems and methods for low-manganese welding alloys
Steven Edward Barhorst, Sidney, OH (US); Kevin M. Krieger, Austintown, OH (US); Joseph C. Bundy, Piqua, OH (US); Mario Anthony Amata, Dublin, OH (US); Daryl L. Duncan, Troy, OH (US); and Susan Renata Fiore, Dublin, OH (US)
Assigned to HOBART BROTHERS LLC, Troy, OH (US)
Filed by Hobart Brothers LLC, Troy, OH (US)
Filed on Feb. 14, 2023, as Appl. No. 18/109,711.
Application 18/109,711 is a continuation of application No. 16/821,614, filed on Mar. 17, 2020, granted, now 11,577,345.
Application 16/821,614 is a continuation of application No. 15/847,282, filed on Dec. 19, 2017, granted, now 10,589,388, issued on Mar. 17, 2020.
Application 15/847,282 is a continuation of application No. 14/457,599, filed on Aug. 12, 2014, granted, now 9,844,838, issued on Dec. 19, 2019.
Application 14/457,599 is a continuation in part of application No. 14/265,750, filed on Apr. 30, 2014, granted, now 9,895,774, issued on Feb. 20, 2018.
Claims priority of provisional application 61/821,064, filed on May 8, 2013.
Prior Publication US 2023/0294217 A1, Sep. 21, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. B23K 35/30 (2006.01); B23K 9/18 (2006.01); B23K 35/00 (2006.01); B23K 35/02 (2006.01); B23K 35/34 (2006.01); B23K 35/40 (2006.01); C22C 38/22 (2006.01)
CPC B23K 35/3053 (2013.01) [B23K 9/18 (2013.01); B23K 35/00 (2013.01); B23K 35/0244 (2013.01); B23K 35/0255 (2013.01); B23K 35/0261 (2013.01); B23K 35/0266 (2013.01); B23K 35/0294 (2013.01); B23K 35/3066 (2013.01); B23K 35/3073 (2013.01); B23K 35/308 (2013.01); B23K 35/3086 (2013.01); B23K 35/3093 (2013.01); B23K 35/34 (2013.01); B23K 35/40 (2013.01); B23K 35/406 (2013.01); C22C 38/22 (2013.01); Y10T 428/12972 (2015.01)] 20 Claims
OG exemplary drawing
 
1. An arc welding consumable that forms a weld deposit on a steel workpiece during an arc welding operation, wherein the welding consumable comprises:
between 0.4 and 2.0 wt % manganese;
strengthening agents selected from the group consisting of nickel, cobalt, copper, carbon, molybdenum, chromium, vanadium, silicon, and boron, where the strengthening agents include:
between 0.001 wt % and 1.0 wt % molybdenum; and
grain control agents selected from the group consisting of niobium, tantalum, titanium, zirconium, and boron, wherein the grain control agents comprise greater than 0.06 wt % and less than 0.6 wt % of the welding consumable, wherein the weld deposit comprises a tensile strength greater than or equal to 70 ksi, a yield strength greater than or equal to 58 ksi, a ductility, as measured by percent elongation, that is at least 22%, and a Charpy V-notch toughness greater than or equal to 20 ft-lbs at −20° F.