HIGH-STRENGTH METAL SHEET FOR USE IN CANS, AND MANUFACTURING METHOD THEREFOR
There is provided a steel sheet for a can, the steel sheet having a yield strength of 450 MPa or more, and the occurrence of cracking at a slab corner being prevented in a continuous casting process. A method for manufacturing the steel sheet is also provided. The steel sheet contains 0.03%-0.10% C,...
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| creator | KOJIMA, Katsumi IWASA, Hiroki TANAKA, Takumi ARATANI, Makoto |
| description | There is provided a steel sheet for a can, the steel sheet having a yield strength of 450 MPa or more, and the occurrence of cracking at a slab corner being prevented in a continuous casting process. A method for manufacturing the steel sheet is also provided. The steel sheet contains 0.03%-0.10% C, 0.01%-0.5% Si, 0.001%-0.100% P, 0.001%-0.020% S, 0.01%-0.10% Al, 0.005%-0.012% N, and the balance being Fe and incidental impurities, in which when Mnf = Mn [% by mass] - 1.71 x S [% by mass], Mnf is in the range of 0.3 to 0.6. The steel sheet has microstructures that do not contain a pearlite microstructure. Preferably, the S content is in the range of 0.001% to 0.005%, and/or the Al content is in the range of 0.01% to 0.04%. Solid-solution strengthening using solid-solution strengthening elements such as C and N and solid-solution strengthening and grain refinement strengthening using P and Mn result in a yield strength of 450 to 470 MPa. Furthermore, a reduction in S and/or Al content prevents cracking at a slab corner. |
| format | Patent |
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A method for manufacturing the steel sheet is also provided. The steel sheet contains 0.03%-0.10% C, 0.01%-0.5% Si, 0.001%-0.100% P, 0.001%-0.020% S, 0.01%-0.10% Al, 0.005%-0.012% N, and the balance being Fe and incidental impurities, in which when Mnf = Mn [% by mass] - 1.71 x S [% by mass], Mnf is in the range of 0.3 to 0.6. The steel sheet has microstructures that do not contain a pearlite microstructure. Preferably, the S content is in the range of 0.001% to 0.005%, and/or the Al content is in the range of 0.01% to 0.04%. Solid-solution strengthening using solid-solution strengthening elements such as C and N and solid-solution strengthening and grain refinement strengthening using P and Mn result in a yield strength of 450 to 470 MPa. 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A method for manufacturing the steel sheet is also provided. The steel sheet contains 0.03%-0.10% C, 0.01%-0.5% Si, 0.001%-0.100% P, 0.001%-0.020% S, 0.01%-0.10% Al, 0.005%-0.012% N, and the balance being Fe and incidental impurities, in which when Mnf = Mn [% by mass] - 1.71 x S [% by mass], Mnf is in the range of 0.3 to 0.6. The steel sheet has microstructures that do not contain a pearlite microstructure. Preferably, the S content is in the range of 0.001% to 0.005%, and/or the Al content is in the range of 0.01% to 0.04%. Solid-solution strengthening using solid-solution strengthening elements such as C and N and solid-solution strengthening and grain refinement strengthening using P and Mn result in a yield strength of 450 to 470 MPa. 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A method for manufacturing the steel sheet is also provided. The steel sheet contains 0.03%-0.10% C, 0.01%-0.5% Si, 0.001%-0.100% P, 0.001%-0.020% S, 0.01%-0.10% Al, 0.005%-0.012% N, and the balance being Fe and incidental impurities, in which when Mnf = Mn [% by mass] - 1.71 x S [% by mass], Mnf is in the range of 0.3 to 0.6. The steel sheet has microstructures that do not contain a pearlite microstructure. Preferably, the S content is in the range of 0.001% to 0.005%, and/or the Al content is in the range of 0.01% to 0.04%. Solid-solution strengthening using solid-solution strengthening elements such as C and N and solid-solution strengthening and grain refinement strengthening using P and Mn result in a yield strength of 450 to 470 MPa. Furthermore, a reduction in S and/or Al content prevents cracking at a slab corner.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
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| subjects | ALLOYS CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CHEMISTRY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS POWDER METALLURGY TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS |
| title | HIGH-STRENGTH METAL SHEET FOR USE IN CANS, AND MANUFACTURING METHOD THEREFOR |
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