成果報告書詳細
管理番号20160000000310
タイトル*平成27年度中間年報 水素利用技術研究開発事業 燃料電池自動車及び水素供給インフラの国内規制適正化、国際基準調和・国際標準化に関する研究開発 水素ステーション用金属材料の鋼種拡大に関する研究開発
公開日2016/11/16
報告書年度2015 - 2015
委託先名一般財団法人石油エネルギー技術センター 高圧ガス保安協会 国立大学法人九州大学
プロジェクト番号P13002
部署名新エネルギー部
和文要約
英文要約Title: Hydrogen Utilization Technology Development/ Research and Development on Improvement of Domestic Regulations, International Standardization and Harmonization for Fuel Cell Vehicles and Hydrogen Infrastructure/ Research and Development on the Expansion of Utilizable Steel Grades for Hydrogen Refueling Station (FY2013-FY2017) FY2013 Annual Report

1. Research and development toward the utilization of lower-cost and/or higher-strength materials
1) Planning and preparation (JPEC)
To clarify the operating pressure and temperature of equipment used in hydrogen fueling station, needs and opinions from industries were surveyed.
- Revise the needs from industries on enhancing the usage of metal materials used in hydrogen refueling stations.
2) Evaluation tests and reviewing the results (KHK, Kyushu Univ., JPEC)
The project intended to expand the type and grade of materials which are eligible to be used for high-pressure hydrogen gas atmosphere in hydrogen refueling station and peripheral systems. This year, the followings were achieved:
- A series of experimental data (e.g., slow strain rate tensile property, fatigue life property, fatigue crack growth property and hydrogen diffusivity) was acquired on the high-strength austenitic stainless steel XM-19 (XRX19) and the low alloy steel JIS-SCM435 in high-pressure hydrogen gas environment. In addition, the data acquisition for the austenitic stainless steel JIS-SUS305 and the low alloy steel JIS-SNCM439 was started.
- Based on a series of experimental data, a new guideline for material selection and design was proposed for JIS-SCM435.
- Basic studies were carried out on the mechanism of hydrogen-induced degradation, e.g. crack acceleration in slow strain rate tensile test and fracture-toughness test, in austenitic stainless steels and low alloy steels.
- To survey the opportunity of using metal materials which show few or some hydrogen embrittlement in hydrogen refueling station, evaluating methods and evaluating indexes were discussed.
- Survey the record of usage of austenite stainless steels such as SUS316L in industrial hydrogen equipment and planning to enhance the usage condition.
- Continue the technical survey and discussion how to use low alloy carbon steels (Cr-Mo steels). Primary report “Guideline” has been proposed in Mar. 2016.
3) Proposal for the revision of Technical Standard (KHK, JPEC)
- Copper ally used under a condition, from -40C to 100C and equal or less than 25 MPa, was included in regulation in Apr. 2014.
- SUH660 high alloy steel used under a condition, from -45C to 50C and equal or less than 82 MPa, was included in regulation in Nov. 2014.

2. Development of database for the utilization of materials in higher pressure hydrogen over a wider range of temperature
1) Planning and preparation (JPEC)
See 1. 1)
2) Evaluation tests and reviewing the results (KHK, Kyushu Univ., JPEC)
Research and evaluation plan of metal materials used in ultra-high pressurized hydrogen at wide temperature range was discussed and Joint meeting was organized to co-operate with other research works in NEDO program.
- Make a consensus of requirements from industries on welding joint that used in in hydrogen refueling stations. As a result, XM-19 (HRX-19) was candidate as an appropriate material and will be evaluate.
3) Proposal for the revision of Technical Standard (KHK, JPEC)
- Available temperature and pressure range of High Ni equivalent SUS316 series austenitic stainless steel was enhanced, i.e. upper temperature limit: 85C to 250C, lower temperature limit: -40C to -45C, upper pressure limit: 70 to 82 MPa.
- It is confirmed the materials nominated in ASME standard can be referred from Japanese regulation, i.e. Reiji-Kijun Sec. 9.2.
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