Austenitic stainless steel medium plate for liquid hydrogen container and preparation method of austenitic stainless steel medium plate

An austenitic stainless steel, thick plate technology, applied in non-pressure vessels, gas/liquid distribution and storage, manufacturing tools, etc., can solve the problems of difficult storage and transportation, high cost, easy volatility, etc., and achieve low ferrite content , the effect of stable tissue properties, good plasticity and toughness
CN114774797AActive Publication Date: 2022-07-22SHANXI TAIGANG STAINLESS STEEL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANXI TAIGANG STAINLESS STEEL CO LTD
Publication Date
2022-07-22

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Abstract

The invention provides an austenitic stainless steel medium plate for a liquid hydrogen container. The austenitic stainless steel medium plate comprises, by weight, 0.050%-0.080% of C, 0.40%-0.75% of Si, 1.0%-1.7% of Mn, 16.0%-17.0% of Cr, 10.5%-11.50% of Ni, 2.0%-2.5% of Mo, smaller than or equal to 0.030% of P, smaller than or equal to 0.002% of S, 0.06%-0.100% of N, 0 < = Cu < = 0.3%, 0 < = Co < = 0.5% and the balance Fe and inevitable impurities. The invention further provides a preparation method of the austenitic stainless steel medium-thickness plate for the liquid hydrogen container. The preparation method comprises the steps of continuous casting billet heating, hot rolling and solution treatment. The stainless steel medium-thickness plate is stable in structure performance and low in ferrite content, has good plasticity and toughness under the low-temperature condition, and can well meet the requirement of a liquid hydrogen container for a stainless steel material.
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Description

technical field

[0001] The invention relates to the technical field of iron and steel smelting, in particular to an austenitic stainless steel medium and heavy plate for liquid hydrogen containers and a preparation method thereof. Background technique

[0002] As a clean energy, hydrogen has the advantages of high efficiency, cleanliness, pollution-free and sustainable. The efficient storage and transportation of hydrogen is an important link in the development of the hydrogen industry. The storage methods of hydrogen mainly include high-pressure hydrogen storage, liquid hydrogen storage, metal hydride hydrogen storage, and organic liquid hydrogen storage. The density of liquid hydrogen is 845 times that of gaseous hydrogen at normal temperature and pressure, and twice that of 70Mpa high-pressure hydrogen. Therefore, compared with high-pressure gaseous hydrogen, liquid hydrogen has high hydrogen storage density, high safety, and is suitable for long-distance storage and tran...

Claims

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