US 11,951,522 B2
Low density press-hardening steel having enhanced mechanical properties
Jiachen Pang, Shenyang (CN); Qi Lu, Shanghai (CN); and Jianfeng Wang, Nanjing (CN)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Mar. 20, 2023, as Appl. No. 18/123,592.
Application 18/123,592 is a division of application No. 17/251,655, granted, now 11,612,926, previously published as PCT/CN2018/091751, filed on Jun. 19, 2018.
Prior Publication US 2023/0226585 A1, Jul. 20, 2023
Int. Cl. B21D 22/02 (2006.01); C21D 1/19 (2006.01); C21D 1/673 (2006.01); C21D 1/76 (2006.01); C21D 6/00 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/12 (2006.01); C22C 38/14 (2006.01)
CPC B21D 22/022 (2013.01) [C21D 1/19 (2013.01); C21D 1/673 (2013.01); C21D 1/76 (2013.01); C21D 6/005 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/12 (2013.01); C22C 38/14 (2013.01); C21D 2211/001 (2013.01); C21D 2211/008 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An alloy composition comprising:
carbon (C) at a concentration of greater than or equal to about 0.05 wt. % to less than or equal to about 0.5 wt. % of the alloy composition,
manganese (Mn) at a concentration of greater than or equal to about 4 wt. % to less than or equal to 5.4 wt. % of the alloy composition,
aluminum (Al) at a concentration of greater than or equal to about 2 wt. % to less than or equal to about 8 wt. % of the alloy composition,
vanadium (V) at a concentration of greater than 0 wt. % to less than or equal to about 0.4 wt. % of the alloy composition,
nitrogen (N) at a concentration of greater than 0 wt. % to less than 0.001 wt. % of the alloy composition, and
a balance of the alloy composition being iron (Fe).