Cold rolled steel sheet and method for manufacturing the same

A cold rolled steel sheet comprising a chemical composition containing, in mass %,

• C:
• 0.0003 to 0.010%,
• Si:
• 0.01 to 1.0%,
• Mn:
• 0.10 to 3.0%,
• P:
• 0.005 to 0.15%,
• S:
• 0.020% or less,
• Al:
• 0.01 to 1.00%, and
• N:
• 0.005% or less,
• further containing any one or more of
• Nb:
• 0.005 to 0.10%,
• Ti:
• 0.01 to 0.10%, and
• B:
• 0.0001 to 0.0030%, and a balance being iron and incidental impurities, and
• having a steel microstructure in which an average aspect ratio of ferrite crystal grains is 2.0 or less,
• wherein an rave value that is an average value of values obtained by measuring an r-value represented by Formula (1) below in three places apart with spacings of 200 mm in a sheet width direction is 1.20 or more, and
• |Δrave| that is an average value of values obtained by measuring, in three places apart with spacings of 200 mm in the sheet width direction, |Δr| that is an absolute value of Δr represented by Formula (2) below is 0.40 or less and a difference between a largest value and a smallest value of |Δr| among the three places is 0.15 or less,
• r-value=(r0+2r45+r90)/4 Formula (1):
• Δr=(r0−2r45+r90)/2 Formula (2):
• in Formula (1) and Formula (2) above, r0, r45, and r90 being Lankford values in directions of 0°, 45°, and 90°, respectively, based on a rolling direction of the steel sheet.