Injection mold material: 718 steel

author: Universe plastic

2024-08-05

718 alloy steel is a commonly used mold steel that can provide good wear resistance, processability and stability, and is suitable for molds that require high wear resistance and high precision.

718 alloy steel is a pre-hardened steel that is particularly suitable for the manufacture of injection molds and has many advantages in injection molds.

718 steel composition and performance parameters

Element	C: 0.35-0.45% Cr: 0.80-1.20% Ni: 1.80-2.50% Mo: 0.90-1.20% W: 0.90-1.20% Ti: 0.20-0.40% Al: 0.20-0.80% P: ≤0.030% S: ≤0.030%	Wear resistance	excellent
hardness	HRC 40-45	Corrosion resistance	good
Tensile strength	1000-1200 MPa	Processability	excellent
Yield Strength	800-1000 MPa	heat treatment	pre-hardened steel
Elongation	≥ 10%	stability	excellent

Advantages of 718 steel injection mold

1. Wear resistance

718 steel has excellent wear resistance and can withstand long-term use and wear. It is suitable for injection molds that require high wear resistance.

2. Processability

It has good processing performance and can be formed by machining and electric discharge machining. It is suitable for the production of complex molds.

3. Hardness

718 steel generally has a higher hardness, which allows it to perform well in high pressure and high temperature environments. It is usually supplied in a hardness of HRC 40-45, which allows it to maintain stable performance during the injection molding process.

4. Corrosion resistance

It has good corrosion resistance and is suitable for applications with high corrosion requirements.

5. Weldability

718 steel has good weldability and can be easily welded if welding repair is required.

6. Heat treatment

It is usually supplied in a pre-hardened state, reducing the need for subsequent heat treatment, saving processing time and costs.

Common scenarios for 718 steel injection molds

1. Automotive parts molds: The high wear resistance and high hardness of 718 steel make it very suitable for injection molds used in manufacturing automotive parts. These parts usually need to withstand high pressure and temperature.

2. Electronic product shell molds: Electronic product shell molds usually require higher precision and surface finish. The excellent processability and stability of 718 steel meet these needs.

3. Consumer product molds: Molds suitable for producing various plastic consumer products, such as home appliances, toys, and packaging containers.

4. Medical device molds: Since 718 steel has good corrosion resistance, it can be used to make injection molds for medical devices. These devices usually have high requirements on material safety and corrosion resistance.

5. Precision molds: Molds used to produce high-precision plastic parts. The excellent processing performance and stability of 718 steel make it an ideal choice for precision injection molds.

6. Home appliance parts molds: For example, plastic parts molds for home appliances such as washing machines and refrigerators. The wear resistance and processability of 718 steel enable it to meet the requirements of these applications.

Factors affecting the cost of 718 steel mold

1. Mold size

The size of the mold directly affects the amount of material used and processing time. Large molds require more material and longer machining time, and therefore cost more.

2. Design requirements

Special design requirements, such as high precision, special surface treatments or additional features, can increase manufacturing costs.

3. Processing technology

Although the processing of 718 steel is relatively easy, complex processing techniques, such as EDM and detailed milling, will also increase costs.

4. Heat treatment

Although 718 steel is usually supplied in a pre-hardened state, additional heat treatment processes may sometimes be required, which also increases cost.

5. Production batch

Molds produced in large quantities often amortize fixed costs, thus reducing the unit cost of a single mold.

6. Suppliers and regions

Prices may vary between suppliers and regions, and choosing an experienced moldmaker can also affect the final cost.

Summarize

718 steel has excellent wear resistance, processability and stability, and is suitable for manufacturing many types of injection molds.

The manufacturing cost of 718 steel molds is affected by many factors, including the complexity, size, design requirements and processing technology of the mold.

Dongguan Universe Plastic Factory has more than 15 years of experience in manufacturing injection molds. It has a professional team, processing equipment and high-quality steel supply channels, and can provide high-quality and cost-effective 718 steel injection mold manufacturing.

If you are looking for a 718 steel injection mold manufacturing company, please contact us to get the latest service prices.

Injection mold material: H13 steel

Injection mold type: hot runner mold