H13 Steel Ejector Pins and Core Pins for Die Casting and Injection Molds

Product Overview

H13 Steel Ejector Pins and Core Pins are precision mold components widely used in die casting molds and plastic injection molds. These parts play a critical role in the molding process by forming internal features and assisting with the ejection of finished parts from the mold cavity.

Manufactured from high-quality H13 tool steel, these pins provide excellent heat resistance, wear resistance, and dimensional stability under high-temperature molding environments. Their durability makes them particularly suitable for demanding industrial applications such as aluminum die casting and high-cycle plastic injection molding.

With precise machining and heat treatment processes, these ejector pins and core pins deliver reliable performance, long service life, and consistent molding accuracy.

Product Description

Ejector pins and core pins are essential components in mold tooling systems. Each serves a specific function within the molding process.

Ejector Pins are responsible for pushing molded parts out of the mold cavity once the molding cycle is complete. They must maintain precise alignment and smooth movement to avoid damaging the molded product.

Core Pins are used to create internal holes, cavities, or complex geometries within molded parts. These pins are positioned inside the mold cavity and directly shape the final product.

Key product features include:

• Manufactured from premium H13 hot-work tool steel

• High resistance to heat, wear, and mechanical stress

• Precision ground surfaces for smooth mold operation

• Tight dimensional tolerances for accurate mold assembly

• Customizable sizes and shapes based on mold design requirements

These pins are produced with high machining accuracy to ensure compatibility with various mold structures.

Applications

H13 ejector pins and core pins are widely used across multiple mold manufacturing industries.

Die Casting Molds

• Aluminum die casting molds

• Zinc die casting molds

• Magnesium alloy casting molds

Plastic Injection Molds

• Packaging product molds

• Bottle cap molds

• Consumer product molds

Precision Mold Tooling

• Automotive component molds

• Electronic component molds

• Industrial plastic part molds

Their high heat resistance makes them particularly suitable for high-temperature molding environments such as die casting.

Precision & Manufacturing Capabilities

Our company manufactures precision mold components using advanced machining technology and strict quality control processes.

Our capabilities include:

• High-precision CNC turning and milling

• Wire EDM machining

• Precision centerless grinding

• Professional vacuum heat treatment

• Surface finishing and polishing

• Dimensional tolerance control up to ±0.002 – ±0.005 mm

Each pin is carefully inspected to ensure accurate dimensions, smooth surface finish, and reliable performance in mold assemblies.

Advantages for Mold Manufacturers

Selecting high-quality ejector pins and core pins directly impacts mold performance and production efficiency.

Our H13 mold pins provide the following advantages:

Excellent Heat Resistance

H13 steel maintains mechanical strength even under high molding temperatures.

Long Tooling Life

High hardness and wear resistance extend the service life of mold components.

Precision Mold Operation

Accurate machining ensures smooth pin movement and stable mold alignment.

Reliable Part Ejection

High-quality ejector pins reduce the risk of product deformation during mold opening.

Custom Manufacturing

Pins can be produced according to specific drawings, dimensions, and mold requirements.

What We Need for Quotation

To provide an accurate quotation for custom ejector pins or core pins, please provide the following information:

• Technical drawings or 3D files

• Pin diameter and length specifications

• Required material (H13 or equivalent)

• Surface treatment requirements (if any)

• Order quantity

• Application type (die casting mold or injection mold)

Our engineering team will evaluate your requirements and provide a suitable manufacturing solution.

FAQ

What is the difference between an ejector pin and a core pin?

An ejector pin pushes the molded part out of the mold after the molding cycle, while a core pin forms internal holes or shapes in the molded product.

Why is H13 steel commonly used for mold pins?

H13 tool steel offers excellent heat resistance, toughness, and wear resistance, making it ideal for high-temperature mold environments.

Can the pins be customized?

Yes. Ejector pins and core pins can be custom manufactured according to customer drawings or specifications.

What industries commonly use these mold components?

They are widely used in die casting molds, plastic injection molds, automotive molds, and industrial tooling.

Do you provide surface treatments?

Yes. Depending on application requirements, treatments such as nitriding, polishing, or coating can be applied.