Jingye Yingkou Medium Plate's Extreme-Cold Special Steel Enters the Arctic Circle
Recently, Jingye Yingkou Medium Plate successfully completed the delivery of its first batch of 7 mm-thick, high-strength steel plates with high and low-temperature toughness, meeting the international standard 09G2S-9. This batch of steel will be used in the construction of a tunnel at a mineral processing plant near the Arctic Circle. The entire manufacturing process was supervised by a third-party organisation, and the mechanical properties, surface quality and non-destructive testing results all met the client' s stringent requirements. This delivery marks the formal recognition of Jingye Group' s manufacturing capabilities for special-purpose steel for extremely cold environments by major international high-end engineering projects.
It is reported that this steel tunnel is situated in the permafrost zone near the Arctic Circle, where winters are long and bitterly cold, with temperatures plummeting to between –50 °C and –55 °C. At such extreme low temperatures, ordinary steel is highly susceptible to 'low-temperature brittle fracture', posing a critical threat to structural safety. Consequently, the project specifies that 09G2S-9 steel plates must have a yield strength of no less than 345 MPa and must maintain a Charpy impact toughness (KCV) of no less than 34 J/cm² under ultra-low temperature conditions of -40 °C; furthermore, all steel must be produced in accordance with the technical standards system of the country where the project is located.
Faced with challenges such as unfamiliarity with the standards framework and tight delivery deadlines, Jingye Yingkou Medium Plate adopted a smelting and production technology for small-section clean steel, whilst systematically optimising the rolling and heat treatment processes. As a result, all specifications of the final product fully met the design requirements and far exceeded the standards, effectively eliminating the risk of 'cold brittleness' in the extreme cold of the polar environment.
This contribution to the 'The Belt and Road Initiative' infrastructure project in extreme cold conditions demonstrates Jingye Yingkou Medium Plate' s ability to respond swiftly to the stringent demands of the international high-end market, as well as its comprehensive competitiveness stemming from the synergy between production, sales and research. In the future, Jingye Yingkou Medium Plate will continue to specialise in the fields of special steel and high-end products, providing global customers with safer and more durable customised material solutions.
Tags: Jingye Yingkou medium-thickness plates, 09G2S-9 steel plates, special steel for extreme cold, Arctic Circle tunnels, low-temperature toughness, resistance to cold brittleness, high-end manufacturing,
