High Performance Plastics for the Industrial and Construction Industries

Industrial equipment and construction products take a beating. Parts get dropped on concrete, bolted to vibrating machinery, left in the sun for years, and splashed with fuel, oil, and cleaning chemicals. High performance plastics give OEMs a way to build components that handle those conditions while staying lighter, more corrosion resistant, and often less expensive than the metal parts they replace.

The catch is that “plastic” covers a huge range of materials. A resin that works well for a consumer product housing can crack, warp, or fade quickly on a job site. Getting the material, part design, and molding process right from the start is what separates a component that lasts for years from one that turns into a warranty claim.

What Makes High Performance Plastics Different?

High performance plastics are engineered resins, and reinforced or modified grades of those resins, that keep their strength and shape under conditions that would break down commodity plastics. Where a standard material might be chosen mainly for cost and appearance, these materials are selected for how they perform under load, heat, and exposure over the full life of the part.

For industrial and construction applications, the properties that matter most usually include:

• Strength and stiffness under load
• Impact resistance, including in cold weather
• Heat resistance near engines, motors, and electrical components
• UV and weather resistance for outdoor use
• Chemical resistance to fuels, oils, and cleaners
• Flame retardance for ratings such as UL 94

Few materials excel at all of these at once. That is why material selection is a trade-off, and why it pays to involve your molder early.

Where High Performance Plastics Show Up in Industrial and Construction Work

Plastics in construction and industrial equipment have moved well beyond simple covers and caps. Today, molded components handle structural, electrical, and protective jobs that once belonged to metal.

Equipment Housings and Covers

Generator covers, motor housings, and control panel enclosures need to protect what is inside while taking impacts and weather on the outside. Injection molding makes it possible to add ribs, bosses, and mounting features directly into the part.

Machine Guards and Safety Shields

Guards and shields must stay rigid and intact to protect operators. Tough, impact resistant materials help these parts hold up to repeated contact and vibration on the shop floor.

Electrical Components and Enclosures

Conduit boxes, junction box components, and wiring enclosures often call for flame retardant grades and consistent wall thickness. Precise molding keeps covers, gaskets, and fasteners fitting correctly every time.

Fastening and Mounting Components

Clips, brackets, spacers, and fastener components are ideal candidates for high volume production. With insert molding, threaded metal inserts can be molded directly into the plastic, eliminating a secondary assembly step.

Heavy Machinery Components

Engine coverings, fluid reservoir components, and cab interior parts need to handle heat, oil, and constant vibration. Reinforced materials help them keep their shape over long service cycles.

Choosing The Right Plastics for Your Application

The right material depends on what the part has to survive. Here are some of the engineering plastics and modified grades most often considered for industrial and construction components.

Nylon and Glass Filled Nylon

Nylon offers excellent toughness, wear resistance, and resistance to oils and fuels. Adding glass fiber increases stiffness and heat resistance significantly, making glass filled nylon a go-to choice for brackets, housings, and parts replacing metal.

Polycarbonate (PC)

Polycarbonate delivers outstanding impact strength and can be molded clear or colored. It works well for safety shields, lenses, and enclosures that need to take a hit without shattering.

Polypropylene (PP)

Polypropylene is lightweight and highly resistant to many chemicals. With glass reinforcement or UV stabilizers, it becomes a cost-effective option for covers, containers, and outdoor components.

ABS

ABS balances impact resistance, rigidity, and a good surface finish. It is common in housings and enclosures, and flame retardant grades are available for electrical applications.

Thermoplastic Elastomers (TPE)

TPE adds grip, cushioning, and sealing. Using two-shot molding, a soft TPE layer can be bonded to a rigid base for handles, seals, and vibration dampening features.

Additives That Boost Performance

Additives let you fine-tune a base resin for the job site:

• UV stabilizers for long-term outdoor exposure
• Flame retardants for electrical and enclosure ratings
• Impact modifiers for cold weather toughness
• Glass or mineral fillers for strength and dimensional stability
• Colorants for safety colors and brand matching

Want a deeper look at resin options? Read our plastic resin guide.

Why OEMs Are Replacing Metal with High Performance Plastics

Metal to plastic conversion is one of the biggest reasons industrial and construction manufacturers take a second look at their parts. When the application allows it, switching from a stamped, cast, or machined metal part to a molded one can offer:

• Weight reduction
• Corrosion resistance
• Part consolidation
• Fewer secondary operations
• Lower cost at high volumes

Lighter parts are easier to ship and install, and molded plastic will not rust or need painting. Several metal pieces can often be combined into one molded part, with features, colors, and threaded inserts built in during molding.

Not every metal part is a good candidate, though. Loads, temperatures, and long-term creep all need to be evaluated. Our engineers can review your current part and let you know honestly whether a conversion makes sense.

Getting the Most Out of High Performance Plastics

Even the best material will underperform if the part design and molding process are not dialed in. Reinforced and engineering resins can be less forgiving than commodity plastics. Areas our experts always consider include:

• Consistent wall thickness
• Gate placement and glass fiber orientation
• Rib and boss design
• Draft angles
• Proper material drying and processing
• Realistic tolerances

Our DFM services catch these issues before steel is cut. With 30 injection molding machines ranging from 15 to 720 tons, two-shot and insert molding capabilities, an in-house tool room, and an on-site metrology lab, Metro can take industrial and construction parts from prototype through high volume production under one roof.

And once your parts are molded, we back them with our on-time delivery guarantee. If we miss your ship date, you get 10% off your order.

Partner With Metro Plastics for Your Next Project

Industrial and construction components need to perform in conditions most products never see. By pairing the right high performance plastics with smart part design and precise, repeatable molding, Metro Plastics helps manufacturers build parts that last longer, weigh less, and cost less to produce. Contact us today to get started on your project!