Cold rolled steel sheet for gasket material, method for production thereof and gasket material produced by the method

A method of producing a cold rolled steel plate for a gasket material, characterized by hot rolling a continuously cast piece comprising, on the weight % base, from 0.08 to 0.60% of C, from 1.0 to 3.0% of Si, from 0.5 to 3.0% of Mn, 0.06% or more of P, 0.06% or less of S, 0.1% or less of Al, from 0.0010 to 0.0150% of N and the balance of Fe and inevitable impurities, conducting pickling, applying cold rolling at a draft of from 50 to 90%.

A method of producing a cold rolled steel plate for a gasket material, characterized by hot rolling a continuously cast piece comprising, on the weight % base, from 0.08 to 0.60% of C, from 1.0 to of 3.0% Si, from 0.5 to 3.0% of Mn, 0.06% or more of P, 0.06% or less of S, 0.1% or less of Al, from 0.0010 to 0.0150% of N and the balance of Fe and inevitable impurities, conducting pickling, applying cold rolling at a draft of from 50 to 90%, and further applying Zn or Ni plating on the surface.

A method of producing a cold rolled steel plate for a gasket material, characterized by hot rolling a continuously cast piece comprising, on the weight % base, from 0.08 to 0.60% of C, from 1.0 to 3.0% of Si, from 0.5 to 3.0% of Mn, 0.06% or more of P, 0.06% or less of S, 0.1% or less of Al, from 0.0010 to 0.0150% of N and the balance of Fe and inevitable impurities, conducting pickling, applying cold rolling at a draft of from 50 to 90%, applying annealing at 630 to 870° C. or higher by continuous annealing or at 500 to 750° C. or higher by batchwise annealing and, subsequently, applying secondary rolling at a draft of 30% or more.

A method of producing a cold rolled steel plate for a gasket material, characterized by hot rolling a continuously cast piece comprising, on the weight % base, from 0.08 to 0.60% of C, from 1.0 to 3.0% of Si, from 0.5 to 3.0% of Mn, 0.06% or more of P, 0.06% or less of S, 0.1% or less of Al, from 0.0010 to 0.0150% of N and the balance of Fe and inevitable impurities, conducting pickling, applying cold rolling at a draft of from 50 to 90%, applying annealing at 630 to 870° C. or higher by continuous annealing or at 500 to 750° C. or higher by batchwise annealing and, subsequently, applying secondary rolling at a draft of 7% or less.

A method of producing a cold rolled steel plate for a gasket material, characterized by hot rolling a continuously cast piece comprising, on the weight % base, from 0.08 to 0.60% of C, from 1.0 to 3.0% of Si, from 0.5 to 3.0% of Mn, 0.06% or more of P, 0.06% or less of S, 0.1% or less of Al, from 0.0010 to 0.0150% of N and the balance of Fe and inevitable impurities, conducting pickling, applying a cold rolling at a draft of from 50 to 90%, applying annealing at 630 to 870° C. or higher by continuous annealing or at 500 to 750° C. or higher by batchwise annealing, subsequently, applying secondary rolling at a draft of 30% or more and, further, applying Zn or Ni plating on the surface.

A method of producing a cold rolled steel plate for a gasket material, characterized by hot rolling a continuously cast piece comprising, on the weight % base, from 0.08 to 0.60% of C, from 1.0 to 3.0% of Si, from 0.5 to 3.0% of Mn, 0.06% or more of P, 0.06% or less of S, 0.1% or less of Al, from 0.0010 to 0.0150% of N and the balance of Fe and inevitable impurities, conducting pickling, applying cold rolling at a draft of from 50 to 90%, applying annealing at 630 to 870° C. or higher by continuous annealing or at 500 to 750° C. or higher by batch annealing, subsequently, applying secondary rolling at a draft of 7% or less and, further, applying Zn or Ni plating on the surface.