EP 4282989 A2 20231129 - HIGH STRENGTH FUEL PIPING MATERIAL FOR HYDROGEN MOBILITY
Title (en)
HIGH STRENGTH FUEL PIPING MATERIAL FOR HYDROGEN MOBILITY
Title (de)
HOCHFESTES KRAFTSTOFFLEITUNGSMATERIAL FÜR DIE WASSERSTOFFMOBILITÄT
Title (fr)
MATÉRIAU DE TUYAUTERIE DE CARBURANT À HAUTE RÉSISTANCE POUR LA MOBILITÉ HYDROGÈNE
Publication
Application
Priority
- KR 20220063532 A 20220524
- KR 20220153278 A 20221116
Abstract (en)
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<sub>eq</sub>) 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.
IPC 8 full level
C21D 1/26 (2006.01); B21C 1/00 (2006.01); B21C 37/06 (2006.01); C21D 6/00 (2006.01); C21D 7/10 (2006.01); C21D 8/10 (2006.01); C21D 9/14 (2006.01); C22C 38/04 (2006.01); C22C 38/44 (2006.01); F17C 1/00 (2006.01)
CPC (source: EP)
B21C 1/24 (2013.01); B21C 35/023 (2013.01); C21D 1/26 (2013.01); C21D 6/004 (2013.01); C21D 7/10 (2013.01); C21D 8/105 (2013.01); C21D 9/14 (2013.01); C22C 38/04 (2013.01); C22C 38/44 (2013.01); B21B 21/00 (2013.01)
Citation (applicant)
- KR 20220010184 A 20220125 - POSCO [KR]
- WO 2015098981 A1 20150702 - UNIV KYUSHU NAT UNIV CORP [JP], et al
- US 2011026650 A1 20110203 - MOLINA ALBERT [ES], et al
- KR 20180111416 A 20181011 - LG ELECTRONICS INC [KR]
- THORSTEN MICHLERJOERG NAUMANNMARTIN HOCKKARL BERRETHMICHAEL P. BALOGHERICH SATTLER: "Microstructural properties controlling hydrogen environment embrittlement of cold worked 316 type austenitic stainless steels", MATERIALS SCIENCE & ENGINEERING A, vol. 628, 2015, pages 252 - 261
- T. YAMADAH. KOBAYASHI: "Criteria for Selecting Materials to be Used for Hydrogen Station Equipment", J. HIGH PRESS. GAS SAF. INST. JAPAN, vol. 49, 2013, pages 885 - 893
- S. MATSUOKAJ. YAMABEH. MATSUNAGA: "Criteria for determining hydrogen compatibility and the mechanisms for hydrogen-assisted, surface crack growth in austenitic stainless steels", ENG. FRACT. MECH., vol. 153, 2016, pages 103 - 127, XP029417081, DOI: 10.1016/j.engfracmech.2015.12.023
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DOCDB simple family (application)
EP 23175028 A 20230524