Cold rolled steel sheets having an excellent enamelability and a method for producing said cold rolled steel sheets
Patent 3950191 Issued on April 13, 1976. Estimated Expiration Date: 
April 13, 1993. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 13, 1993. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2768892 3239390 3417463 3725143 InventorsAssigneeApplicationNo. 516407 filed on 10/21/1974US Classes:148/505, Utilizing therein factors or percentages related to metal or metal alloy composition (i.e., including carbon content)148/330, Beryllium or boron containing148/546, With working148/629Decarburizing or denitridingExaminersPrimary: Stallard, W.AbstractSteel sheets having an excellent enamelability are produced by adjusting the carbon, silicon, manganese, aluminum, oxygen and boron contents in a molten steel to be not more than 0.020% of carbon, not more than 0.03% of silicon, not more than 0.50% of manganese, not more than 0.010% of aluminum, nor more than 0.050% of oxygen, boron within a range of 0.003-0.020% being in such an amount B(%)×0(%) of more than 1×10-5 and the remainder being inevitable impurities and iron, and hot rolling the resulting steel, cold rolling the steel and subjecting to a recrystallization annealing in a conventional manner. | |
