Overview
Low-temperature resistant low-alloy steel plates are engineered to maintain structural integrity in cryogenic environments, typically below -40°C. These plates incorporate alloying elements like nickel, manganese, and niobium to enhance toughness while reducing brittle fracture risks. They are categorized under standards such as ASTM A553 (Type I/II) and EN 10028-4, with grades like AISI 9% nickel steel being industry benchmarks. Developed primarily for liquefied natural gas (LNG) infrastructure, modern variants now serve renewable energy sectors like hydrogen storage. The material’s performance is validated through Charpy V-notch tests at target temperatures, with required energy absorption typically exceeding 27J at -196°C for critical applications.
Physical and Chemical Properties
These plates exhibit a fine-grained ferritic microstructure, often achieved through controlled rolling and quenching processes. Key mechanical properties include yield strength ranging from 350–690 MPa and elongation rates of 18–22%. The addition of 2.5–9% nickel content significantly improves low-temperature ductility. Chemically, they feature reduced sulfur/phosphorus levels (<0.015%) to minimize segregation. Some advanced grades incorporate micro-alloying with titanium or vanadium for grain refinement. Thermal conductivity remains stable at cryogenic temperatures (≈30 W/m·K at -100°C), while thermal expansion coefficients are approximately 11.5×10⁻⁶/°C between 20°C to -100°C.
Main Applications
Over 60% of global production serves energy sector applications, including LNG carrier containment systems (Moss-type tanks) and land-based storage terminals. In shipbuilding, these plates are mandatory for ice-class vessel hulls operating in Arctic routes (e.g., Polar Code Category A ships). Secondary applications include petrochemical cold boxes, superconducting magnet enclosures, and aerospace cryogenic fuel systems. Recent innovations see usage in liquid hydrogen transport trailers, where grades with -253°C capability are required. Construction projects in Siberia and Alaska utilize these plates for frost-resistant structural supports.
Safety and Storage
Material embrittlement is the primary risk – proper preheating (120–150°C) is mandatory before welding to prevent cold cracking. Post-weld heat treatment (PWHT) at 580–620°C may be required for thick sections. Storage should avoid chloride contamination that could induce stress corrosion cracking. Transport requires waterproof wrapping with desiccants. Unlike standard steel, these plates must not be flame-cut without subsequent machining to remove heat-affected zones. First-aid measures for grinding dust exposure include eye flushing with water and respiratory protection during processing.
B2B Procurement Guide
Procurement should specify exact testing standards (e.g., ASTM E23 for impact tests) and traceability requirements. Mill certificates must include heat number, chemical analysis, and mechanical test results. For large projects, consider ordering from producers with accreditation for pressure vessel applications (ASME Section VIII). Lead times often exceed 12 weeks for customized thicknesses (8–100mm). Spot purchases of common grades (e.g., ASTM A517 Grade F) may be available through steel service centers. Always verify the manufacturer’s capability to supply test coupons from the same heat as the delivered material.
Related Manufacturers
- 主营：[]
- 主营：Q355CH型钢、Q355DH型钢、Q235CH型钢、Q355C钢板、Q355D钢板、Q355ND钢板、Q355NE钢板、Q460C高强板、Q550D高强板、Q690D高强板、Q245R容器板、Q345R容器板、Q345qD桥梁板、NM400耐磨板、NM500耐磨板、耐候钢板、耐酸钢板、Q355C槽钢、Q355D槽钢、Q355C角钢、Q355D角钢、Q355C工字钢、Q355D工字钢、Q355C圆钢、Q355D圆钢
- 主营：方管、镀锌方管、方矩管、钢板、合金板、家具管、光亮管、圆管、不锈钢管、圆钢、不锈钢、合金圆钢、汽车钢
- 主营：方矩管、汽车钢、60kg钢轨、低合金H型钢、平开板、桥梁板、容器板、风塔板、耐磨板、花纹板、q420b钢板、q235c钢板、大梁板、q345d槽钢、q355d角钢、q355e槽钢、q355d槽钢、q355c槽钢、q345b角钢、q235d角钢
- 主营：耐磨板、耐磨钢板、高强度板、低合金板、机械结构用钢板、桥梁板、低合金高强钢、船用钢板、海洋工程钢板、船用锅炉压力容器板、高建钢
- 主营：耐低温h型钢、工字钢、工程建筑钢结构
- 主营：合金管、无缝管、方矩管、耐磨板、耐热钢管、流体管、合金钢管、镀锌槽钢、合金圆钢、无缝钢管、无缝方管、高压锅炉管
- 主营：模具钢、轴承钢、弹簧钢、Q355E钢板、不锈钢、齿轮钢、实心圆棒、阀门用钢、冷拔光圆、合金结构钢、加工定制
- 主营：模具钢cr12mov、20号钢、9crwmn钢、nm500钢板、q345钢板、冷轧板、热轧板、锰13钢板、dc01板、sk5钢板、scm435钢、d2钢、10号钢、纯铁、高速钢、40cr圆钢、15号钢棒、镀铬棒、dc04冷轧卷、65mn硬料、m2高速钢硬料、预硬冲子料
- 主营：模具钢、圆钢切割、圆棒合金结构钢
- 主营：Q355DH型钢、Q355NEH型钢、Q355NE圆钢、Q355D/Q345E卷板、耐候钢、耐磨板、高强板、Q355D钢板、Q355ME钢板、Q355D中板、Q355NE中板、S355J2钢板、Q355D槽钢、Q355D角钢、S355NL型材、BS960E、BS700MCK2、本钢、山钢、宝钢、Q355D线材
- 主营：无缝管、低温钢管、合金钢管、船板、船用钢板、CCSEH36船板、CCSDH36船板、CCSEH40船板、CCSAH36船板、耐低温角铁、CCSAH40船用板、CCSDH40船板、CCSAH40船板、低合金碳素钢板、船板厂家、低温钢材、合金钢材、低温型材、高强度钢管、无缝钢管、合金角铁、高压低温用管、钢结构专用型材、卷管、壁厚卷管
- 主营：圆钢、方管、H型钢、钢板、角钢、工字钢、槽钢、焊管、无缝管、方矩管
- 主营：耐磨钢板、合金钢板、堆焊耐磨板、进口耐磨板
- 主营：钢管厂家、H 型钢厂家、角钢厂家、钢板厂家、桥梁钢板厂家、Q550D 钢板厂家、Q355D 钢板厂家、q420D钢板厂家、槽钢厂家、工字钢厂家、方管厂家、无缝管厂家
- 主营：工角槽、无缝钢管、高压锅炉管、耐磨板、耐磨钢板、石油裂化管
- 主营：耐候钢板、高强钢板、耐磨钢板