Insert Molding

Aria offers a wide range of materials for insert molding, including various thermoplastics, thermosets, and metals, allowing for greater design flexibility and customization.

We employs advanced quality control measures to ensure that each part meets strict specifications and tolerances.

Variety of Designs
ISO 9001:2015 certificated
24/7 engineering support

Start A Insert Molding Quote

step | stp | stl | igs | iges | obj
All uploads are secure and confidential.

Finished Insert Molding Projects


Injection Mold Design

Insert Molding Design

Free to modify


Experience in Insert Molding

15 years

injection molding cost

Insert Molding Cost

Competitive Price

Types of  Insert Molding Process

Our insert molding capabilities enable us to manufacture insert molded parts with flexible quantity options, from small batches to high volume production.

injection molding
Multi-Component Molding

It is a process that involves injecting multiple plastics and metals into a mold at the same time. These materials then combine to form a stiffer, stronger material. this process can be used to create products with intricate designs.  It is commonly used in the automotive industry to create parts that are both strong and lightweight.

insert molding Electric components
Multi-shot Molding

It is a type of insert molding that involves the use of multiple materials to create a single product. In this process, the different materials are inserted into the mold one at a time. The operator then waits for each layer to harden before adding the next layer. This process is used to create products with multiple colors or textures.

insert molding parts
Insert Molding

Insert molding incorporating multiple materials into a single part, creating a strong bond between the insert and the plastic material, resulting in enhanced durability. Additionally, it can provide an attractive, seamless finish and reduce the amount of material required for the finished part, resulting in cost savings.

Why Choose Aria’s Insert Molding

Program Develop Design

Design Assistance

We offer DFM feedback to optimize part designs for insert molding and can assist with material selection and part geometry for optimal outcomes.

High quality 3D Printing

High Quality

We use advanced techniques and equipment for precise and consistent injection molding, and have strict quality control processes to ensure parts meet customer specifications.

fast delivery

Fast Delivery

We offer rapid prototyping and production services with fast turnaround times, producing small quantities in as little as one day and larger quantities in a few weeks.

reduce production cost

Save Cost

We offer competitive pricing for insert molding services, and our digital manufacturing approach reduces costs compared to traditional methods.

How Does Insert Molding Work?

Insert Molding Services
Insert Molding Services - (sketch map)

Insert molding is a manufacturing process that involves combining metal or plastic parts with a molded plastic component to create a finished product.

Here is a step-by-step breakdown of how insert molding works:


The design of the part and the insert are created, and a mold is designed to produce the final product.

Insert placement:

The pre-made insert is placed into the mold cavity or tool.


The mold is closed and held in place by clamps.

Injection molding:

Molten plastic material is injected into the mold around the insert. The plastic material flows around the insert and fills the mold cavity, creating a secure bond between the insert and the plastic.

Cooling and solidification:

The plastic material is allowed to cool and solidify, forming a finished product with the insert securely embedded inside.


The finished product is removed from the mold.

The key to successful insert molding is creating a strong bond between the insert and the plastic material. This is achieved by carefully selecting the materials and process parameters, such as the temperature, pressure, and injection speed. In some cases, the insert may be coated or treated with an adhesive to improve adhesion to the plastic material.

Insert Molding Plastics

Words Tab
ASB Materials

Tooling Materials

The tooling materials for insert molding depend on the application's production volume, part complexity, and material compatibility.

Tool Steel: P20, H13, S7, NAK80, S136, S136H, 718, 718H, 738

Stainless Steel: 420, NAK80, S136, 316L, 316, 301, 303, 304

Aluminum: 6061, 5052, 7075

Nylon Materials

Plastic Materials

Insert molding materials depends on the strength, durability, flexibility, and resistance of the plastic to various environmental factors.

Common plastic materials include:

ABS     Nylon (PA)    PC    PVC
PU       PMMA           PP     PEEK
PE        HDPE            PS     POM

PC Materials

Additives and fibers

To achieve desired properties, additives and fibers can be added to the insert molding material.

Examples of common additives include:

UV absorbers
Flame retardants
Glass fibers

PE Materials


The selection of the insert material depends on the specific requirements of the application, including strength, durability, temperature resistance, and electrical conductivity.

Common inserts materials include:

Stainless Steel

Notes On Material Selection




Some materials stick together when they are overmolded, while others do not. Perfect combination is the ideal situation.


Since it is overmolded on plastic, the substrate must not deform under the heat and pressure of the molding process.

Tensile property

Most materials of overmolding will have several properties related to tensile strength, elongation, tensile modulus, and so on.

Compression Properties

It may be important for your overmoling project to know how much parts can be compressed without permanent damage.

Friction Coefficient

Friction is the force required to cross one surface over another, The surface texture of the mold is a factor too.


Hardness property is the ability of the material to resist indentation, hardness of different materials vary greatly.

Flexural properties

The bending resistance of a material is the bending modulus. This attribute is the second factor in the “feel” of materials.


Plaster is affordable, easy to work with, and is used to create both simple and complex molds.

Applications of Overmolding Services

Insert molding is a process of molding plastic around pre-formed components or inserts, such as metal parts, magnets, electronics, or other materials. This technique is used in various industries for different applications.



Consumer Goods

Medical Devices

Electronic Component

Advantages of Insert Molding Servcies

injection molding surface quality


When the mold design is inserted with the needed metal, it can quickly help in increasing the stability of the entire product.

injection molding Limiting design change cost


Plastic parts can make the overall product very light, and on the other hand, when the inner core metal is combined with the plastic cover, it increases the strength.

about us icon02

Improvement with the size

One can make thinner and smaller products with the same strength and durability and can even get better performance by using insert molding.

Saving cost icon


The molding production is much more cost-effective. the assembly cost is low, there is minimal labor cost related to the process.

Short time to market icon


it is a one doesn’t require manual handling and the entire labor-related process. the efficiency of the process gets better.

injection molding materials

Variety of materials

You can use numerous materials and even plastic resins in the entire process of insert molding.

Structure design 06

Variety of designs

The insert molding technique is used to design different parts and models in numerous industries these days.

injection modling production time

Improves the reliability

The reliability of the products produced by the machine used in the process is more significant than all other molding techniques.

Plastic Insert Molding FAQs

A: Plastic Insert Molding is a process used to create components with plastic and metal parts combined. It involves the injection of molten plastic surrounding a pre-made metal insert. Once the plastic cools, it forms around the insert for a finished product that combines both materials’ benefits.

The primary difference between them is that, in overmolding, the plastic material is injected directly onto a molded part or assembly; in insert molding, the plastic is first injected into a cavity and then the finished piece is inserted into another injection-molded part.

A: The insert molding process begins with the creation of a metal insert. This can be done through machining, die casting, or other processes depending on the product’s specifications. The insert is then placed into the injection mold tool before it is closed and secured. Molten plastic is then injected into the mold around the metal part until it cools and solidifies. Once the plastic cools, it is removed from the mold and any necessary finishing is performed before it’s ready to use in product assemblies.

Get Your Free Quote About Insert Molding parts Today.

All information and uploads are secure and confidential.

Insert Molding Resources