Steel sheet for three-piece can and method for manufacturing the same
First Claim
1. A steel sheet for a three-piece can, the steel sheet having a chemical composition consisting of, by mass %, C:
- 0.0005% or more and 0.0035% or less, Si;
0.050% or less, Mn;
0.63% or more and 1.00% or less, P;
0.030% or less, S;
0.020% or less, Al;
0.010% or more and 0.100% or less, N;
0.0030% or less, B;
0.0005% or more, and the balance being Fe and inevitable impurities, wherein;
the relationship B/N≥
0.50 is satisfied (where B/N represents (B(mass %)/10.81)/(N(mass %)/14.01));
a Young'"'"'s modulus in a direction at an angle of 90°
to a rolling direction is 220 GPa or more;
a Lankford value in the direction at the angle of 90°
to the rolling direction is less than 1.00; and
an average ferrite grain size in the steel sheet is 10.0 μ
m or less.
1 Assignment
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Accused Products
Abstract
Provided are a steel sheet for a can having high buckling strength for a can body against an external force and excellent formability when being formed into a shape having a design effect by additionally giving elongation strain in the circumferential direction after the steel sheet having been formed into a cylindrical shape and a method for manufacturing the steel sheet. The chemical composition is controlled to contain, by mass %, C: 0.0005% or more and 0.0035% or less, Si: 0.050% or less, Mn: more than 0.60% and 1.00% or less, P: 0.030% or less, S: 0.020% or less, Al: 0.010% or more and 0.100% or less, N: 0.0030% or less, B: 0.0005% or more, and the balance being Fe and inevitable impurities, in which the relationship B/N≥0.50 is satisfied where B/N represents (B(mass %)/10.81)/(N(mass %)/14.01), and a Young'"'"'s modulus in a direction at an angle of 90° to the rolling direction is 220 GPa or more.
3 Citations
5 Claims
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1. A steel sheet for a three-piece can, the steel sheet having a chemical composition consisting of, by mass %, C:
- 0.0005% or more and 0.0035% or less, Si;
0.050% or less, Mn;
0.63% or more and 1.00% or less, P;
0.030% or less, S;
0.020% or less, Al;
0.010% or more and 0.100% or less, N;
0.0030% or less, B;
0.0005% or more, and the balance being Fe and inevitable impurities, wherein;the relationship B/N≥
0.50 is satisfied (where B/N represents (B(mass %)/10.81)/(N(mass %)/14.01));a Young'"'"'s modulus in a direction at an angle of 90°
to a rolling direction is 220 GPa or more;a Lankford value in the direction at the angle of 90°
to the rolling direction is less than 1.00; andan average ferrite grain size in the steel sheet is 10.0 μ
m or less. - View Dependent Claims (2, 3, 4, 5)
- 0.0005% or more and 0.0035% or less, Si;
Specification