公开(公告)号：EP4282989A3

公开(公告)日：2024-01-24

申请号：EP23175028.2

申请日：2023-05-24

Applicant: Tris Tube Co., Ltd.

Inventor： YIM, Tai-Hong ,  JO, Sang-Soo ,  BYUN, Jae-Bock

IPC: C21D1/26 ,  C21D6/00 ,  C21D7/10 ,  C21D8/10 ,  C21D9/14 ,  C22C38/04 ,  C22C38/44 ,  B21C1/00 ,  B21C37/06 ,  F17C1/00

Abstract: An objective of the present disclosure is to provide a high strength and lightweight fuel pipe for a mobility by increasing a nickel equivalent, configuring an alloy composition having price competitiveness, and designing optimized pipe dimensions to a pipe for carrying hydrogen formed in the alloy composition under applicable pressure.
According to the objective, the present disclosure provides an alloy material having a Ni equivalent (Ni eq ) over 28.5% by controlling the composition of C, Si, Mn, P, S, Ni, Cr, and Mo, a pipe is machined using the alloy material, and a high-strength pipe of about 1/8 hard is provided by applying a strength increasing technology using work hardening and heat treatment.

公开(公告)号：EP4282989A2

公开(公告)日：2023-11-29

申请号：EP23175028.2

申请日：2023-05-24

Applicant: Tris Tube Co., Ltd.

Inventor： YIM, Tai-Hong ,  JO, Sang-Soo ,  BYUN, Jae-Bock

IPC: C21D1/26 ,  C21D6/00 ,  C21D7/10 ,  C21D8/10 ,  C21D9/14 ,  C22C38/04 ,  C22C38/44 ,  B21C1/00 ,  B21C37/06 ,  F17C1/00

Abstract: An objective of the present disclosure is to provide a high strength and lightweight fuel pipe for a mobility by increasing a nickel equivalent, configuring an alloy composition having price competitiveness, and designing optimized pipe dimensions to a pipe for carrying hydrogen formed in the alloy composition under applicable pressure.
According to the objective, the present disclosure provides an alloy material having a Ni equivalent (Ni eq ) over 28.5% by controlling the composition of C, Si, Mn, P, S, Ni, Cr, and Mo, a pipe is machined using the alloy material, and a high-strength pipe of about 1/8 hard is provided by applying a strength increasing technology using work hardening and heat treatment.