Gas sensor

A gas sensor comprising:

• a sensor element extending in an axial direction and having an electrode pad on a rear-end-side outer surface thereof;
• a metallic terminal member electrically connected to the electrode pad;
• and
• a lead wire electrically connected to the metallic terminal member, wherein
• the metallic terminal member has a forward-end-side terminal portion which is formed of an alloy containing Ni as a main component and which comes into contact with the electrode pad, and a rear-end-side terminal portion which is formed of a stainless alloy and which is connected to the lead wire,
• the forward-end-side terminal portion has a bent portion bent toward the sensor element, and an element contact portion which is integrally connected to the bent portion, extends toward the sensor element, and comes into contact with the electrode pad,
• the rear-end-side terminal portion has a crimp terminal portion which forms a tube or a part of a tube, surrounds a conductor of the lead wire, and fixedly holds the conductor when crimped, and
• a maximum thickness t1 of the bent portion is greater than a maximum thickness t2 of the crimp terminal portion.