Crimped electric wire with terminal and method for producing the same

A method for producing a crimped electric wire with a terminal in which a terminal fitting is crimp-connected to part of an electric wire having a core wire made of aluminum or aluminum alloy, the method comprising:

• placing the core wire on the electric wire crimping section of the terminal fitting;
• and
• compressing the core wire and the electric wire crimping section to conductively connect the core wire to the electric wire crimping section by crimping the core wire and the electric wire crimping section between a pair of dies, wherein
• in a case that the value obtained by dividing the height of the electric wire crimping section by the width of the electric wire crimping section after the crimping of the electric wire crimping section is referred to as a height to width ratio and that the value obtained by dividing the gross cross-sectional area of the core wire after the crimping of the electric wire crimping section by the gross cross-sectional area of the core wire before the crimping of the electric wire crimping section is referred to as a compression ratio, the height to width ratio is set to 0.5 or more and 0.6 or less, and the compression ratio is set to 55% or more and 65% or less.