ASSAB STAVAX (AISI 420 ESR) Core Pins | 46-50 HRC Precision Mold Parts

Product Overview

ASSAB STAVAX precision core pins are manufactured for high-performance injection molding moulds requiring excellent corrosion resistance, polishability, and dimensional stability. Produced by Senlan Precision, these core pins are supplied exclusively under OEM / built-to-print manufacturing, with controlled hardness between 46–50 HRC and precision-polished surfaces suitable for packaging and medical mould applications.

Core Features & Technical Advantages

• ASSAB STAVAX Stainless Mold Steel
  Excellent corrosion resistance and uniform microstructure

• Controlled Hardness: 46–50 HRC
  Balanced wear resistance and toughness for long mould life

• High-Quality Polished Surface
  Suitable for mirror or optical-grade cavity requirements

• Precision CNC Machining & Grinding
  Ensures stable diameter, straightness, and concentricity

• Custom / OEM Production Only
  Manufactured strictly according to customer drawings and specifications

Application Scenarios / Industry Applications

• Bottle Cap and Packaging Moulds

• Screw Cap and Closure Moulds

• Medical Packaging and Syringe Moulds

• High-Polish Plastic Injection Moulds

• Corrosion-Sensitive Moulding Environments

These precision core pins are widely used in moulds where surface quality, hygiene standards, and mould durability are critical.

Mould Structure & Design Explanation

Core pins play a critical role in defining internal features and functional geometries of injection moulded parts.
Using ASSAB STAVAX material allows:

• Superior surface finish after polishing

• Stable performance in humid or corrosive environments

• Reduced risk of rust-related mould defects

• Consistent cavity geometry over long production cycles

Properly manufactured core pins directly influence mould precision, part appearance, and maintenance intervals.

Manufacturing Capability & CNC Machining Capacity

Senlan Precision applies a controlled machining workflow:

• CNC Turning and Milling for geometric accuracy

• Precision Grinding for tight tolerance control

• Polishing Processes tailored to mould surface requirements

• Heat Treatment Control to achieve specified hardness range

Typical capabilities:

• Dimensional tolerance: as per drawing (±0.01 mm achievable)

• Surface finish: polishing level according to mould requirement

Custom Development / OEM Cooperation Process

1. Technical drawing and specification review

2. Material and hardness confirmation

3. CNC machining and secondary processing

4. Polishing and final finishing

5. Full inspection and delivery

This process supports new mould projects, replacement core pins, and long-term mould maintenance programs.

Quality Control & Export Experience

• ISO 9001 quality management system

• Material certification and hardness verification

• Dimensional inspection with calibrated measuring equipment

• Stable export experience serving international mould manufacturers

• Inspection reports available upon request

Related Precision Mold Components (Internal Links)

• Precision Mold Core Inserts

• Injection Mold Cavities

• Mold Sliders and Wear Components

• Ejector Pins and Sleeves

• CNC Machined Mold Components

Frequently Asked Questions (FAQ)

Q1: Are these ASSAB STAVAX core pins standard parts?
A: No. All core pins are custom-manufactured according to customer drawings.

Q2: Why choose STAVAX for polished mould components?
A: STAVAX offers excellent polishability, corrosion resistance, and dimensional stability, making it suitable for high-surface-quality moulds.

Q3: Can hardness or surface finish be adjusted?
A: Yes. Hardness range and polishing level can be customized based on application requirements.

Q4: Do you support small-batch or prototype orders?
A: Yes. Prototype, trial, and production orders are all supported.

Request a Quotation

For ASSAB STAVAX precision core pins, polished injection mould components, or OEM mould parts manufactured to drawing, please contact Senlan Precision with your technical requirements.
Our engineering team will review your specifications and provide a detailed quotation.