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Plastic Mold Steel

Daido Steel's tool steels lineup for plastic molding dies includes 40HRC pre-hardened steel grade NAK55/NAK80, quenched and tempered type grades with high hardness, stainless type grades, and other original grades that can provide superior mirror polishability, machinability, and corrosion resistance.
It is possible to apply surface treatments such as texturing, nitriding, plating etc.

Conceptual diagram of Plastic Mold Steel Properties

Products list

	Brand name	Characteristic	Application	Brochure
	Brand name	Pre-hardened type	PX4/PX5	Brochure	AISI P20 (1.2311) mod. 30HRC Pre-hardened Steel	General use mold
PAC5000	AISI P20 (1.2311) mod. HH type 40HRC Pre-hardened Steel		High hardness Mirror polish mold	591KB
NAK55	40HRC Precipitation hardening steel Easy machining		Precision long run mold Rubber mold	573KB
NAK80	40HRC Precipitation hardening steel High mirror-finish		Precision long run mold High-mirror polish mold	573KB
NAK86K	38HRC Pre-hardened steel High mirror-finish Excellent corrosion resistance		Precision long run mold High-mirror polish mold	1,170KB
G-STAR	AISI 420F mod. (33HRC) Easy machining		Mother die (Holder)
H & T type	S-STAR	AISI 420 (1.2083) mod. Remelted steel High mirror-finish	High-gloss mold Corrosion resisting mold	199KB
H & T type	PD613	High hardness & wear resistance High mirror-finish	Precision long run mold Glass filled resin mold
Maraging	MAS1C	High toughness & strength	Precision mold High tough pin

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Hot Work Tool Steel
(Hot-Forming Die)

Used for forging dies for forming heated metal materials.

Hot Work Tool Steel
(Die-Casting Die)

Used for die casting molds for casting molten alloys (Al etc.).

Hot Stamping Die Steel

Used for hot stamping dies, which form and quench heated steel sheets.

Cold Work Tool Steel

Used for cold press and forging dies for forming steel plates and blocks.

Plastic Mold Steel

Used for injection molds for forming plastic products.

Tool Steel Products list

Daido's Brand steels list.
The brochures can also be downloaded.

Notable product

DCMX

First matrix type cold work die steel in Japan It will contribute to both reduction of lead time for die manufacturing and improvement of die life.

DHA-HS1

DHA-HS1 provides the highest level of thermal conductivity, which allows shorter cooling time and greater productivity. In addition, its high softening resistance prolongs die life. DHA-HS1, which is ideal for hot stamping dies, can create cost savings in press processing.

NAK80

World class stable and reliable quality steel, NAK80, has been selected as the most suitable steel for plastic molds.

DHA-WORLD

Daido Steel's high-reliable conventional hot work die steel, DHA-WORLD is suitable material for die cast molds.
It is easily heat-treated and able to gain fine structure to the center as well as high toughness.