Metal Mold Market Projected to Reach $5.5 Billion by 2027

While the trend for 3D-printed parts for automotive has been coming on strong, most automotive OEMs still design parts for injection molding.

Clare Goldsberry

February 18, 2021

2 Min Read
Tucana Project
Jaguar Land Rover is participating in the four-year Tucana Project, which hopes to accelerate mainstream use of electric vehicles and make vehicles lighter.Image: Jaguar Land Rover

While the trend for 3D-printed parts for automotive has been coming on strong, most automotive OEMs still design parts — exterior, interior, under-hood, and fuel systems — for injection molding. Although the mold design process is highly critical and challenging, injection molding itself is a reliable method for manufacturing solid plastic parts with enhanced quality finish.

When considering the material for mold making, it has been observed that metal molds made with steel and aluminum are the ideal choice for plastic injection molding, given their intrinsic properties, including durability. The metal mold market for plastic injection molding is forecast to reach an annual value of $5.5 billion by 2027, according to a new report released by Global Market Insights.

More than 60% of companies surveyed prefer steel as a key material for molds used in the injection molding process, primarily because of the metal’s ability to make complex parts as well as its durability under high-volume molding conditions. Moreover, the cost of steel typically represents only about 5 to 10% of the tooling cost, thereby reducing the total cost of the finished product. Other advantages of steel molds for injection molding include its hardness and reduced flash on the mold surface. Steel molds hold up better when molding materials such as glass-filled nylons and other filled engineering materials.

Aluminum molds also have a number of benefits for injection molds. Aluminum molds have been deemed to last long beyond the set requirement; in some cases, aluminum molds can be used to produce more production units by several orders of magnitude should volume requirements exceed the original projection. Additionally, aluminum molds are easier to adjust if the molding process reveals required changes. A typical aluminum mold takes less time to machine and build because of the softness of the material.

Given these benefits, steel and aluminum molds are seeing high demand across a range of applications including in the automotive industry. Automakers have increased the number of plastic parts for auto components, particularly in response to lightweighting requirements. Injection molding is currently one of the dominant production methods for manufacturing plastic parts in the automotive sector, as it represents a viable solution for mass producing consistent quality parts in a range of polymers.

An upsurge in demand for lightweight vehicles potentially will open new growth opportunities for the metal molds market. For example, Jaguar Land Rover recently announced plans to improve the efficiency of its future EVs through increased use of lightweight materials. The company is currently leading an industrial consortium in the Tucana Project, which emphasizes enhancement of structural stiffness by 30% and vehicle weight reduction by 77 pounds.

About the Author(s)

Clare Goldsberry

Until she retired in September 2021, Clare Goldsberry reported on the plastics industry for more than 30 years. In addition to the 10,000+ articles she has written, by her own estimation, she is the author of several books, including The Business of Injection Molding: How to succeed as a custom molder and Purchasing Injection Molds: A buyers guide. Goldsberry is a member of the Plastics Pioneers Association. She reflected on her long career in "Time to Say Good-Bye."

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