US 12,410,497 B2
Electric-resistance-welded steel pipe or tube for hollow stabilizer
Masatoshi Aratani, Tokyo (JP); Kazutoshi Ishikawa, Tokyo (JP); Ryoji Matsui, Tokyo (JP); and Tomonori Kondou, Tokyo (JP)
Assigned to JFE STEEL CORPORATION, Tokyo (JP)
Appl. No. 17/595,254
Filed by JFE STEEL CORPORATION, Tokyo (JP)
PCT Filed May 12, 2020, PCT No. PCT/JP2020/019015
§ 371(c)(1), (2) Date Nov. 12, 2021,
PCT Pub. No. WO2020/230795, PCT Pub. Date Nov. 19, 2020.
Claims priority of application No. 2019-090627 (JP), filed on May 13, 2019.
Prior Publication US 2022/0307117 A1, Sep. 29, 2022
Int. Cl. C22C 38/58 (2006.01); B23K 35/30 (2006.01); C21D 3/04 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); C22C 38/46 (2006.01); C22C 38/48 (2006.01); C22C 38/50 (2006.01); C22C 38/54 (2006.01); B23K 103/02 (2006.01)
CPC C22C 38/58 (2013.01) [B23K 35/3073 (2013.01); C21D 3/04 (2013.01); C22C 38/002 (2013.01); C22C 38/005 (2013.01); C22C 38/02 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/48 (2013.01); C22C 38/50 (2013.01); C22C 38/54 (2013.01); B23K 2103/02 (2018.08)] 4 Claims
OG exemplary drawing
 
1. An electric-resistance-welded steel pipe or tube for a hollow stabilizer, comprising a chemical composition containing, in mass %,
C: 0.20% to 0.40%,
Si: 0.1% to 1.0%,
Mn: 1.23% to 2.0%,
P: 0.1% or less,
S: 0.01% or less,
Al: 0.01% to 0.10%,
Cr: 0.01% to 0.50%,
Ti: 0.010% to 0.050%,
B: 0.0005% to 0.0050%,
Ca: 0.0001% to 0.0050%,
N: 0.0050% or less, and
Sn: 0.020% to 0.050%,
with a balance being Fe and inevitable impurities, wherein
depths of total decarburized layers on an inner surface and on an outer surface are 50 μm or less.