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The Company has obtained approval of steel manufacturing methods in response to standards of main classification societies in the world. We have a system that can satisfy any demand (in terms of grade and plate thickness).
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All sorts of steel plates for shipbuilding are available that make the most of the Thermo-Mechanical Control Process (TMCP).
Specific name of SMIs TMCP steel
DAC : Dynamic Accelerated Cooling process type (Accelerated cooling type)
SSC : Sumitomo Special Control Rolling process type (Non- accelerated cooling type)
Compared with conventional steel, TMCP steel excels in weldability, and further the base metal and weld joints are very tough in spite of their high strength.
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Latest products and technical topics
Sumitomo Metals has developed and supplied to customers the following products in response to a variety of needs.
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Steel for high heat input welding: Thanks to our original material design, good HAZ toughness can be ensured even if high heat input is performed in welding.
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Steel for low temperature service for LPG carriers: Products are available to meet customers needs.
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High heat input welding type: This steel enables HAZ to maintain good low temperature toughness even in large heat input welding. |
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High TS type: Plate thickness can be reduced due to its high tensile strength of TS≥530N/mm2. |
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General type: This type excels in low temperature toughness and is applicable to mixed carriers for ammonium.
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LP (longitudinally profiled plate): Tapered steel plate with longitudinally varying thickness.
The use of LP provides such merits as fewer weld lines.
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High tensile strength steel with high resistance to fatigue fracture: By controlling the microstructure of the relevant steel, the fatigue crack growth rate can be reduced by half compared with existing steels. |
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