Titanium casting product for hot rolling and method for producing the same

A titanium cast product made of commercially pure titanium, comprising:

• a layer containing one or more kinds of β stabilizer elements in a range of 1 mm or more in depth at a surface serving as a surface to be rolled,
• wherein an average value of β stabilizer element concentration in a range of within 1 mm in depth is higher than β stabilizer element concentration in a base material by, in mass %, equal to or more than 0.08 mass % and equal to or less than 1.50 mass %.

A method for producing a titanium casting cast product, comprising:

• melting a surface serving as a surface to be rolled of a titanium cast product together with a material containing a β stabilizer element and then solidifying the surface to make an average value of β stabilizer element concentration in a range of within 1 mm in depth higher than β stabilizer element concentration in a base material by, in mass %, equal to or more than 0.08 mass % and equal to or less than 1.50 mass %, the titanium cast product being made of commercially pure titanium.