KPMAX

The KPMAX is Hs30-type general-purpose steel for plastic molds with well-balanced characteristics needed for mold manufacturing and product forming.

Superior machinability
Reduces the total machining time of molds by 20%～50% in comparison with JIS S55C.
Stable and uniform hardness through to the center
Improved hardening characteristics in comparison with JIS S55C offers uniform hardness through to the center.
Superior welding reparability
Smaller HAZ hardness than JIS S55C offers easy cutting and grinding after repair work.
Satisfactory drawing machinability and mirror finish surface
Uniform structure and hardness ensures the drawing machinability and mirror finish surface equal or superior to JIS S55C.

Applications		Position of KPMAX

●General-purpose large-size parts ●Car parts ●Household appliances ●Steel for plastic molds for general miscellaneous goods

Machinability		Hardness of cross section

Tool wear, 50% of S55C		Uniform hardness through to the center

Welding performance		Mechanical characteristics

Small hardness increase in welded portion		Tensile characteristics (room temperature)

Physical characteristics