Hardened S136 Steel Round Mold Components | Precision EDM & Mirror Polish

Product Overview

Round shape S136 precision mold parts with 48–52 HRC hardness are custom-manufactured components designed for injection molding applications requiring corrosion resistance, dimensional stability, and consistent surface integrity. Produced by Senlan Precision, these parts are manufactured strictly according to customer drawings, using controlled heat treatment and EDM processing to meet demanding mold performance requirements.

Key Features & Advantages

• Built-to-Print Manufacturing
  Fully customized production based on customer drawings and technical specifications.

• S136 Stainless Mold Steel
  Excellent corrosion resistance and polishability for long mold service life.

• Controlled Hardness (48–52 HRC)
  Balanced wear resistance and toughness for stable injection molding cycles.

• EDM Precision Processing
  Suitable for complex geometries and tight internal features.

• Round Shape Accuracy
  Controlled concentricity, roundness, and dimensional consistency.

Application Scenarios / Industry Use

• Injection molds for bottle caps and closures

• Packaging mold core and insert components

• Medical plastic mold tooling

• Multi-cavity injection mold systems

• Corrosion-sensitive molding environments

Mold Structure & Design Description

Round S136 mold components are commonly used as cores, inserts, or forming elements within injection mold assemblies. EDM processing enables accurate reproduction of detailed profiles and internal features while maintaining dimensional integrity after heat treatment. Hardness control between 48–52 HRC ensures reliable wear resistance without compromising structural stability during long production runs.

Manufacturing Capability & CNC Machining

Senlan Precision operates dedicated machining and finishing processes for precision mold parts:

• High-precision CNC machining centers from MAKINO

• CNC turning and milling systems from HARDINGE

• EDM (Electrical Discharge Machining) for complex geometries

• Precision grinding and polishing operations

• Controlled heat treatment for hardness consistency

Capabilities support prototype, small batch, and mass production.

Custom Development / OEM Cooperation Process

1. Drawing & Specification Review
   Geometry, tolerance, hardness, and surface requirements

2. Engineering Assessment
   Material selection and EDM/CNC process planning

3. Manufacturing Execution
   CNC machining, EDM processing, heat treatment

4. In-Process & Final Inspection
   Dimensional, hardness, and visual quality checks

5. Packaging & Export Delivery
   Export-ready packaging with inspection documentation

All projects follow a Built-to-Print / OEM manufacturing model.

Quality Control & Export Experience

• Incoming material verification (S136 steel)

• Hardness testing after heat treatment

• In-process dimensional inspection

• Final quality verification before shipment

• Stable export supply to Europe and North America

Related Products

• S136 Mold Core Inserts

• Precision Injection Mold Components

• EDM Processed Mold Parts

• Multi-Cavity Mold Inserts

• Stainless Steel Mold Components

Frequently Asked Questions (FAQ)

Q1: Is this a standard product or custom-made?
All parts are custom-manufactured according to customer drawings.

Q2: Why is EDM processing used?
EDM allows precise machining of complex or hard-to-reach features after heat treatment.

Q3: Can hardness outside 48–52 HRC be supplied?
Yes, hardness can be adjusted based on application requirements.

Q4: Are these parts suitable for multi-cavity molds?
Yes, they are commonly used in high-cavity and continuous production molds.

Get a Quote

Please send your technical drawings, material requirements, hardness range, tolerance specifications, and expected quantities.
Our engineering team will provide a technical quotation and lead time assessment.