Type II gives off less heat during hydration.
This type of cement costs about the same as type I. Its typical compound composition is:
A limitation on the composition is that the (C3A) shall not exceed 8%, which reduces its vulnerability to sulfates.
This type is for general construction exposed to moderate sulfate attack and is meant for use when concrete is in contact with soils and ground water, especially in the western United States due to the high sulfur content of the soils.
Because of similar price to that of type I, type II is much used as a general purpose cement, and the majority of Portland cement sold in North America meets this specification.
Note: Cement meeting (among others) the specifications for types I and II has become commonly available on the world market.