Metalworking oil composition

A metal working oil composition, comprising at least one base oil (A), sulfurized oils and fats (B), and a polymer (C) and further optionally comprising one or more components selected form the group consisting of:

• an unsaturated fatty acid, an oily agent, an extreme pressure agent, a mist suppressant, a rust inhibitor, and a dispersant, wherein
• the at least one base oil (A) is selected from the group consisting of a mineral oil and a synthetic oil, and a content of the one base oil (A) is at least 82.0 wt. %, based on the total amount of the composition;
• the sulfurized oils and fats (B) has a kinematic viscosity at 40° C. of from 60 mm2/s to 1,600 mm2/s, and a content of the sulfurized oils and fats (B) is from 1 mass % to 30 mass %, based on the total amount of the composition;
• and
• the polymer (C) is at least one dehydrated condensate of a ricinoleic acid, the polymer (C) has a hydroxyl value of from 5 to 100 mgKOH/g, a content of the polymer (C) is from 0.2 mass % to 15 mass % based on the total amount of the composition, and a saponification value of the polymer (C) is from 100 to 300 mgKOH/g.