Plastic Mold Steels

Plastic Mold Steels

Plastic mold steels are high-quality and durable steel types used in the production of plastic injection molds. These steels provide the necessary properties for shaping plastic materials under high temperatures and pressures. Plastic mold steels are known for their excellent machinability, high surface quality, and durability.

Where Are Plastic Mold Steels Used?

Plastic mold steels are primarily used in the manufacturing of molds for plastic parts. Their main applications include:

• Plastic Injection Molds: Molds for products produced through injection of plastic materials in various shapes.
• Production Parts: Molds for plastic parts used in industries such as automotive, electronics, toys, and packaging.
• High Surface Quality Molds: Molds for products where aesthetic and functional features are emphasized.

Specified Plastic Mold Steels

SC 1.2738

• DIN: 42CrMo4
• Properties: High carbon and chromium content, excellent machinability, high surface quality, good hardness. Can achieve 28-34 HRC hardness with heat treatment.
• Applications: Plastic injection molds, frozen food molds, and other molds requiring high-quality surfaces.

SC 1.8550

• DIN: 1.2714
• Properties: High impact resistance, toughness, high strength, good machinability. Can achieve 50-55 HRC hardness with heat treatment.
• Applications: Plastic molds and applications requiring high impact resistance.

SC 1.2312

• DIN: 1.2312 (commonly known as P20)
• Properties: Good machinability, high surface quality, sufficient hardness. Can achieve 28-32 HRC hardness with heat treatment.
• Applications: Plastic injection molds and simple metal molds.

SC 1.2738HH

• Properties: High hardness (HH) version of SC 1.2738, offering higher hardness and surface quality. Can achieve 38-44 HRC hardness with heat treatment.
• Applications: Plastic injection molds and applications requiring high durability.

Plastic Mold Steels Features

Steel Type	Features	Application Area
SC 1.2738	DIN: 42CrMo4, High carbon and chromium content, Excellent machinability, High surface quality, Good hardness, Can achieve 28-34 HRC hardness with heat treatment	Plastic injection molds, frozen food molds, molds requiring high-quality surfaces
SC 1.8550	DIN: 1.2714, High impact resistance, Toughness, High strength, Good machinability, Can achieve 50-55 HRC hardness with heat treatment	Plastic molds, applications requiring high impact resistance
SC 1.2312	DIN: 1.2312 (commonly known as P20), Good machinability, High surface quality, Sufficient hardness, Can achieve 28-32 HRC hardness with heat treatment	Plastic injection molds, simple metal molds
SC 1.2738HH	High hardness (HH) version of SC 1.2738, Higher hardness, High surface quality, Can achieve 38-44 HRC hardness with heat treatment	Plastic injection molds, applications requiring high durability

These steel types are chosen for their ability to provide high-performance results in the production of plastic products and various industrial applications.