Nitrided 1.2344 Core Pin

Injection Molding & Aluminum Die Casting Auto Parts

Product Overview

Our nitrided 1.2344 (H13 equivalent) core pins are precision mold components designed for aluminum die casting and high-load injection molding applications.

These core pins are typically installed in:

• Aluminum die casting automotive molds

• Structural casting tools

• High-temperature plastic injection molds

• Deep cavity and thin-wall forming areas

Manufactured through CNC machining, controlled heat treatment, and post-process nitriding, these components provide a durable surface layer combined with a tough and stable core.

All parts are produced strictly according to customer drawings and tolerance requirements.

Material – 1.2344 (H13 Tool Steel)

1.2344 is widely used in die casting molds due to:

• High resistance to thermal fatigue

• Strong resistance to molten aluminum erosion

• Stable hardness after heat treatment

• Good impact toughness under cyclic load

Typical hardness range:
46–50 HRC (customizable depending on application)

This hardness level balances wear resistance and fracture toughness for automotive die casting operations.

Nitriding Surface Treatment

Controlled nitriding improves:

• Surface hardness

• Resistance to aluminum soldering

• Wear resistance under metal flow

• Surface fatigue life

The nitrided layer enhances durability without compromising core toughness.

Nitriding is applied after precision machining to maintain dimensional stability.

Engineering Focus

Core pins in aluminum die casting molds operate under extreme thermal and mechanical stress.
Performance depends on:

• Heat treatment stability

• Nitriding depth control

• Dimensional accuracy

• Cooling efficiency

1) Dimensional Precision

• Tolerance: up to ±0.01 mm

• Axiality: ≤ 0.005 mm

• Verticality: ≤ 0.005 mm

• Surface finish: Ra 0.6 (or specified requirement)

Critical diameters are ground after heat treatment to ensure a correct fit within cavity inserts and slides.

2) Deep Cooling Hole Capability

For long and slender core pins with internal cooling:

• Gun drilling with SR-drill technology

• Capability up to Ø3 mm × L = 600 mm

• Controlled concentricity (T.I.R. within specification)

• Stable internal surface finish

Proper cooling channel alignment improves thermal balance and extends service life.

3) Stability in Aluminum Die Casting

The combination of:

• H13 base material

• Controlled hardness

• Nitrided surface layer

Helps reduce:

• Cracking risk from thermal shock

• Adhesion of molten aluminum

• Premature wear in high-flow areas

Manufacturing Capability

Production processes include:

• CNC turning and milling

• Gun drilling for cooling channels

• Sodick EDM and wire cutting

• OD / ID grinding

• Surface grinding and polishing

• Thread grinding when required

Precision finishing ensures stable geometry and interchangeability.

Typical Applications

• Automotive aluminum die casting components

• Engine brackets and structural castings

• Plastic injection molds require heat resistance

• Replacement core pins for high-cycle molds

These core pins are suitable for both new mold manufacturing and spare part supply.

Quality Control

Each core pin undergoes:

• Raw material traceability verification

• Dimensional inspection

• Hardness testing after heat treatment

• Final inspection before shipment

Inspection documentation can be provided upon request.

Related Products

For complete die casting mold systems, we also supply:

• Nitrided cavity inserts

• Die casting mold slide components

• Ejector pins and sleeves for die casting molds

• High-precision cooling core pins

• Multi-cavity die casting mold spare parts

All related components are manufactured on a built-to-print basis to ensure compatibility within your mold assembly.

Technical FAQ

Q1: Why use 1.2344 for aluminum die casting core pins?
It provides strong thermal fatigue resistance and stable performance under molten aluminum contact.

Q2: Does nitriding reduce aluminum sticking?
Yes. Nitriding improves surface hardness and reduces soldering tendency.

Q3: Can long core pins with internal cooling be manufactured?
Yes. Gun drilling allows precise deep-hole cooling with controlled concentricity.

Q4: Is ±0.01 mm tolerance achievable after heat treatment?
Yes. Post-heat treatment grinding ensures dimensional stability.

Q5: Are replacement parts available?
Yes. Replacement core pins can be produced based on drawings or measured samples.

Business Terms

• Payment: T/T, PayPal, Western Union (50% deposit, balance before shipment)

• Packaging: Anti-corrosion oil coating, carton box packaging

• Shipping: DHL, TNT, FedEx, sea freight available

Request a Technical Quotation

To receive a quotation, please provide:

• 2D or 3D drawings

• Application type (aluminum die casting or injection molding)

• Required hardness and surface treatment

• Cooling channel specifications

• Quantity and delivery timeline

Our engineering team will review your specifications and provide a technical proposal.