pardal
This chemistry is very close to Water Hardening Tool Steel Class 131 (AISI W4) except that the Carbon content is under the range for this particular class.
W4 spec is 0.8-1.2C. However, since the remainder of te chemistry is within range it is going to respond to heat treatment very much like W4 and unless it is a borderline or critical application, I would not be hesitant to use it as if it were W4.
Leonard Jesus is the WAY