Product Catalog

Plastic Mold Steel

Plastic mold steel is a specialized category of tool steel designed for manufacturing molds used in plastic injection molding and other plastic forming processes. These steels are engineered to provide an excellent balance of hardness, toughness, wear resistance, and dimensional stability, allowing molds to maintain precision and durability during repeated production cycles.

Browsing Plastic Mold Steel Inventory
1.2738

1.2738

HRC 30–36 (typical range)
Plastic injection mold cores and cavities, Large mold components
View Grade
420

420

HRC 48–52 (when heat treated)
Plastic mold components, Corrosion-resistant mold parts
View Grade
NAK80

NAK80

HRC 38–42 (typical pre-hardened range)
Plastic mold repair and modification, Mold inserts
View Grade
P20

P20

HRC 28–34 (typical pre-hardened range)
Plastic injection molds, Mold bases
View Grade
S136

S136

HRC 48–52 (when heat treated)
Plastic molds for corrosive materials, Mold cores and cavities
View Grade