Precision Forged Components | ISO 9001-Certified Manufacturing | Prime Custom Parts
For over 30 years, Prime has been a leading manufacturer of custom metal forgings for global enterprises.Backed by ISO 9001 certification and 10 dedicated production lines, we engineer high-strength forged components with precision timing and cost efficiency. We are your one-stop partner from design to delivery.
Custom forged parts of metal
As a professional metal forging supplier, we are committed to providing high quality, customized metal forging solutions to our customers around the world. With many years of industry experience and advanced production technology, our forgings are widely used in aerospace, automotive manufacturing, energy, machinery and equipment and other fields. We provide free forging, die forging, rolling forging and precision forging and other processes to meet the different needs of various customers. Whether small-scale customization or mass production, we can ensure high-precision, high-intensity products, and provide customers with quality after-sales service. Choose Us, you will get efficient, reliable metal forging products, help your business success.
Table of Contents
Why Choose Prime for Custom Metal Forgings?
From closed-die forgings to fully machined components, Prime combines certified quality, deep forging know-how, and factory-direct pricing to keep your projects on time and on budget.
Verified ISO 9001 Quality
Our forging plant runs under ISO 9001 quality management with full material traceability, controlled heat treatment, and dimensional inspection for every batch of custom metal forgings.
Three Decades of Forging Expertise
Since 1993, we have been supplying forged parts for automotive, construction, energy and industrial machinery, helping OEMs optimize forging design, cost and performance.
Full-Spectrum Customization
We support a wide range of forged materials, shapes and volumes – from prototype forgings to long-term production, including machining, surface treatments and assembly.
Guaranteed Timelines with In-House Control
In-house tooling, forging and machining allow us to control the full process and offer reliable lead times for custom forged parts, even on urgent projects.
Direct-to-Customer Pricing
As a direct forging manufacturer with optimized material yield and process flow, we offer competitive pricing without trading company mark-ups on your custom forgings.
Precision-Forged Components Manufactured by Prime
Closed-Die Steel Flange Forging
Closed-die forged flange with high tensile strength. Engineered for automotive, industrial machinery, and hydraulic applications. Optimized grain flow for superior structural integrity.
Alloy Steel Connecting Rod Forging
Engine-grade forged connecting rod with high fatigue resistance. Machining allowance reserved for finishing; supports heat treatment and surface coatings.
Aluminum Lightweight Bracket Forging
Lightweight aluminum forging (6061/6082/7075) engineered for strength and reduced weight. Common in aerospace, transport equipment, and structural assemblies.
Stainless Steel Shaft Collar Forging
Corrosion-resistant shaft collar forging with stable mechanical properties. Ideal for food machinery, marine parts, and industrial equipment.
Custom Forged Gear Blank
High-precision forged gear blank designed for heavy-duty power transmission. Provides superior strength compared with casting or machining.
Seamless Ring Forging (Carbon & Alloy Steel)
Hot-rolled seamless forged ring with excellent impact and pressure resistance. Suitable for bearings, reducers, wind-power, and industrial machinery.
Application fields of customized metal castings
Forging delivers high strength, improved grain flow, and reliable fatigue performance—ideal for critical components used in demanding industries. Below are common application areas we support with custom forging + CNC finishing.
Chassis, Steering & Powertrain Forgings
Strength-to-weight optimization for fatigue-critical applications
- Control arms, knuckles, brackets, yokes
- Gear blanks, hubs, flanges, shafts
- CNC machined datums, bores & threads
Load-Bearing & Wear-Critical Components
Forged parts built for shock loads, torque, and long service life.
- Mounting blocks, couplings, clevises
- Bearings seats, precision holes, keyways
- Heat-treat + finish machining for fit
Pressure & Sealing-Interface Forgings
For harsh environments requiring robust material performance.
- Flanges, connectors, valve components
- Machined sealing faces & bolt patterns
- MTR/EN 10204 3.1 documentation
Heavy-Duty Equipment Forgings
Designed for impact, abrasion, and extreme duty cycles.
- Linkages, pins, hooks, brackets
- Wear surfaces with hardening options
- Coating + packaging for export delivery
General Hot Selling Products
Customized metal forgings can be divided into several main types according to the processing technology, each process has its unique characteristics and applications. The following are some of the common types of metal forging parts grouped by process and their characteristics and areas of application:
Free Forging
Features:
Free forging is through mechanical forging hammer or hydraulic press and other tools, the metal billet heating to the appropriate temperature, through the beating, pressing and other ways to change the shape of the metal. This process does not depend on the die, the shape of the workpiece is relatively simple and the size is large.
Applications:
Free forging is widely used in heavy machinery, metallurgical equipment, pressure vessels, ships, mining machinery and other fields. Commonly used in the manufacture of large-size forgings, such as shafts, rings, discs and so on.
Die Forging
Features:
Die forging is the metal billet heating, into the mold through the press or hydraulic press for compression molding. Die forging can produce forgings with high precision and uniform size, and can handle parts with complex shape.
Applications:
Die forging is widely used in aerospace, automotive, electronics, engineering machinery and other high-precision requirements of the field. Especially suitable for the production of gears, bearings, automotive engine parts, aerospace parts.
Rolling Forging
Features:
Rolling forging is through rolling tool on the metal billet for rotary forging, so that it gradually formed in the rotation of the required shape. This process can effectively improve the microstructure and properties of metal materials, and increase the strength and durability of parts.
Applications:
Roll forging is mainly used for shafts, gears, transmission parts and other parts that require high strength and long life. It is widely used in automobile, aerospace, railway and other industries.
Precision Forging
Features:
Precision forging is to improve the dimensional accuracy, surface quality and internal structure of products through more precise control on the basis of conventional forging process. Precision forgings often need no or a small amount of subsequent processing.
Applications:
Precision forging is mainly used in high-end markets with strict requirements on size and shape, such as aerospace, precision machinery, medical equipment and other industries. Commonly used in the manufacture of small complex parts, such as engine parts, instrument accessories, etc. .
Open die Forging
Features:
Open die forging is the use of open-die forging process, usually applied to simpler shapes. Compared with the closed die forging, the die cost is lower, and the process is suitable for small batch production.
Applications:
Suitable for forgings with larger size or irregular shape, such as construction machinery, mining equipment, building materials, etc. .
Closed die Forging
Features:
Closed-die forging is to put the heated metal blank into the precision die, and the metal is filled into the whole die cavity by the pressure of the hydraulic press or the press to obtain the high-precision forging. This process is suitable for mass production high precision parts.
Applications:
Closed-die forging compresses preheated metal billets within CNC-machined tooling under high-pressure hydraulic presses, achieving net-shape precision.
Superplastic Forging
Features:
Superplastic forging uses the superplastic characteristics of metal at a specific temperature and strain rate to carry out forming process. This process can produce extremely complex shapes, and the internal structure of the parts is more uniform.
Applications:
Mainly used in aerospace field, especially for complex parts with high requirements such as aero-engine, Turbine Blade, etc. .
In Summary
Different metal forging processes are widely used in different industries and application fields because of their characteristics and adaptability. Selecting the appropriate forging process can improve the production efficiency, reduce the cost, and ensure the mechanical properties and quality of the parts.
Common Raw Materials for Custom Forged Parts
Forging starts with the right billet/bar material. Below is a practical material table commonly used for OEM forged components—covering carbon steel, alloy steel, stainless, and aluminum forging options. We can supply mill test reports (MTR/EN 10204 3.1) and heat-treat certificates upon request.
| Material Category | Common Grades / Equivalents | Typical Heat Treatment | Best-Fit Applications | Selection Notes |
|---|---|---|---|---|
| Carbon Steel Cost-Effective |
AISI 1018 / 1020 C45 (EN 1.0503) / 1045 |
Normalizing / Anneal Optional Q&T (by design) |
Brackets, yokes, general-duty forged hardware | Great value for non-extreme loads. Apply zinc/e-coat/powder coating for enhanced corrosion resistance in humid environments Use C45/1045 when higher strength than mild steel is needed. |
| Alloy Steel High Strength |
4140 / 42CrMo4 (EN 1.7225) 4340 (EN 1.6582) / 40Cr |
Q&T (Quench & Temper) Optional induction hardening |
Automotive, power transmission, heavy-duty mounts | Preferred for fatigue and shock loads. Define hardness range + mechanical property targets. Consider machining allowance and distortion control after heat treat. |
| Stainless Steel Corrosion Resistant |
304 / 304L (EN 1.4301 / 1.4307) 316 / 316L (EN 1.4401 / 1.4404) |
Solution anneal (when needed) Passivation optional |
Marine hardware, food equipment, outdoor mechanisms | Choose 316/316L for chloride environments. For appearance-critical parts, specify surface finish and pickling/passivation requirements. |
| Aluminum Lightweight |
6061 (forged/machined use) 7075 (high strength applications) |
T6 (heat treated) Anodizing optional |
Lightweight brackets, sporting, aerospace-style fixtures | 6061 balances machinability and corrosion resistance. 7075 offers higher strength but needs careful corrosion considerations (coatings recommended). |
| Alloy Steel Wear Resistance |
8620 / 20CrNiMo 52100 (bearing steel, selected cases) |
Carburizing + temper (8620) Through hardening (52100) |
Gears, bushings, wear-critical forged components | Use case hardening when you need a tough core + hard surface. Specify case depth, hardness profile, and grinding requirements if needed. |
| All Materials Documentation |
MTR / Heat No. Traceability | Per spec: Q&T / Normalizing / Anneal / T6 | OEM forged parts with stable repeatability | For stable production, define: material standard + heat treatment + test requirements (chemistry, tensile, hardness) and agree on machining allowance + critical datums. |
Quick tip: For load-bearing forged parts, alloy steel (e.g., 4140 / 42CrMo4) with Q&T is a common baseline. For corrosion exposure, upgrade to 316/316L or add protective coatings.
Send Drawing for Material RecommendationQuality Assurance & Process
The production process of metal forging parts is accurate and efficient, ensuring that each part can meet the strict requirements of customers. Our manufacturing process consists of the following key steps:
Step 1:Material Selection
Select the appropriate metal raw materials, usually steel, aluminum alloy, copper alloy, etc. according to customer requirements and product performance requirements, select different metal materials.
Step 2:Heat Up
The metal raw material is heated to a suitable temperature so that it has enough plasticity for subsequent forging. Different materials are heated at different temperatures, usually between 600 °C and 1200 °C.
Step 3: Forging
The heated metal is placed in a forging die and shaped by mechanical force or pressure. Common forging methods include:
Free forging: shaping of metal blanks by direct action of a hammer or press.
Die forging: metal into a closed mold, the use of the shape of the mold on the metal pressure for shaping.
Step 4: Cooling
After forging, the metal parts need to be cooled. The cooling rate can be controlled according to the nature of the metal and requirements, cooling process can be used air cooling, water cooling and other methods.
Step 5: Post-processing
In order to eliminate the internal stress and improve the microstructure of the metal, the forgings need to be treated after cooling. Common post-processing methods include:
Annealing: Slow cooling after heating to a certain temperature to reduce the hardness and brittleness of the metal.
Normalizing: Heating to high temperature and then air cooling to improve the structure and properties of metal.
Step 6:Machining
After the forgings have been post-treated, finishing may be required. This includes turning, milling, grinding, etc. to ensure that the product dimensions, Surface finish, etc. meet the requirements.
Step 7:Inspection And Testing
Carry out strict quality inspection and performance test on the forgings, including size inspection, hardness test, mechanical property test, etc. , to ensure that the products meet the design requirements.
Step 8：Surface Treatment
If necessary, forgings may also be surface treatment, such as spraying, galvanizing, heat treatment, etc. to enhance its corrosion resistance, wear resistance and other properties.
Step 9:Packaging And Delivery
After completion of all processes, the metal forgings will be packaged to ensure that they are not damaged during transportation for final delivery to the customer.
Step 10: Delivery Of Finished Product
Upon completion of all inspection and post-processing, the castings will become the final product, ready to be delivered to the customer or used for assembly.
Want to know how to compress lead times?
In order to shorten the production and delivery cycle, we suggest that you tell us your needs in detail, and we will adjust the strategy flexibly according to your requirements to ensure your production and help you succeed!
Enhance part longevity, aesthetics, and assembly efficiency through advanced surface treatments
From scale removal to corrosion protection, PRIME helps you choose the right post-forging surface treatment based on material, tolerance, and end-use. Get consistent appearance, controlled roughness, and reliable coating adhesion — without adding unnecessary cost.
- Scale / oxide removal
- Deburring & edge smoothing
- Coating-ready surface prep
- Corrosion resistance
- Appearance & branding
- Traceability marking options
Standardized finishing routes
Clear options for carbon steel, alloy steel, stainless steel, aluminum, and copper alloys — aligned with your drawing notes and specs.
Coating adhesion you can trust
Surface prep controls (cleanliness, profile/roughness, and contamination prevention) to improve paint/powder/plating consistency.
Inspection after finishing
Thickness checks, salt-spray targets, adhesion tests, and final dimensional verification — especially important for threaded and press-fit features.
Typical post-forging finishing flow
We recommend a simple, repeatable route. Your exact steps depend on forging scale, machining allowance, and coating requirement.
- 1) Scale removal & cleaning Shot blasting / tumble / alkaline wash to remove oxide scale and surface debris.
- 2) Deburring & edge smoothing Vibratory finishing / manual deburr for safe handling and better assembly.
- 3) Heat treatment (if required) Quench & temper / normalization / stress relief, followed by cleaning again.
- 4) Precision machining (if needed) Critical dimensions finished after forging to meet tight tolerances and surface roughness targets.
- 5) Surface protection Pickling/passivation, plating, black oxide, painting, powder coating, or oil film — based on your environment.
- 6) Final inspection & packing Thickness/appearance checks, corrosion packaging (VCI if needed), labeling, and traceability.
Finishing options (choose what fits your part)
Expand the items below to see what each treatment is best for.
Shot blasting / grit blasting Remove scale + create a clean, uniform profile
- Improves coating adhesion and visual uniformity.
- Controls surface profile for paint/powder coating.
- Can be combined with masking for critical fits.
Vibratory finishing / tumbling Deburr edges + improve touch & appearance
- Reduces micro-burrs and sharp edges from trimming.
- Creates consistent “production-ready” look for batches.
- Optional media selection to protect cosmetic surfaces.
Pickling / passivation (stainless) Remove iron contamination + enhance corrosion resistance
- Helps restore a protective oxide layer (after machining/welding).
- Reduces risk of surface rust from handling contamination.
- Ideal for food, medical, and outdoor environments.
Powder coating / e-coating / painting Durable protection + consistent color appearance
- Wide color options and good salt-spray performance (with proper prep).
- Masking options for threads, press fits, and datums.
- Optional primer + top coat for harsh environments.
Zinc / nickel plating (select areas or full) Corrosion resistance + electrical/assembly benefits
- Optional clear/black finishes and thickness control.
- Good for fastener-like features and mating surfaces.
- Engineering note: specify thickness range + post-plate bake if needed.
Black oxide / phosphate / oil film Low-cost protection + good for internal parts
- Helps reduce flash rust during storage and shipping.
- Stable dimensions (thin layer), suitable for fits.
- Pairs well with VCI packing for export.
Common finishing specifications & checks
If you already have a standard, just send it with your RFQ. If not, we can recommend targets based on your application.
| Item | Typical target / control | Notes |
|---|---|---|
| Surface roughness (Ra) | As-forged / blasted / machined as required | Specify only on functional faces to control cost. |
| Coating thickness | Defined range (µm) + masking plan | Critical for threads, press fits, and tight tolerances. |
| Adhesion | Cross-hatch / pull-off (by requirement) | Depends heavily on cleaning and surface profile. |
| Corrosion performance | Salt-spray hours or environment-based target | Recommend VCI packing for ocean shipments. |
| Dimensional verification | Final check after finishing | Finishing can slightly affect fits; verify critical CTQs. |
Note: For forged parts with tight fits, we can build a “masking + thickness window” plan to keep assemblies stable across batches.
Need the best finish for your forging?
Send your drawing (PDF/DWG/STEP), material, and corrosion requirement. We’ll reply with a recommended finishing route (prep steps, coating type, masking notes, and inspection checkpoints).
The Common Pitfalls When Purchasing
Please note that the final cost depends on the customized service you require, the specifications of the raw materials used, the relevant national laws, and the distance of transportation. Take the example of booking a tall container of products:
- Improper selection of materials: Improper selection of materials may lead to forgings can not reach the strength, corrosion resistance and other performance requirements, affecting the service life.
- Poor design: An immature design can lead to forging difficulties, increased costs, and delivery delays.
- Supplier is not reliable: Some unprofessional suppliers may not be strict in quality control, resulting in substandard products or delivery is not timely.
FAQS
What is your Minimum Order Quantity (MOQ)?
For custom parts, we don’t set a fixed MOQ. The economic quantity depends on the part’s size, material, and process (forging / casting / machining). For most projects, trial orders start from 50–200 pcs, while mass production usually begins from 500 pcs and up. If you are developing a new project or need engineering samples, we are flexible and can discuss a smaller first batch.
Can you provide samples?
Yes. We can provide samples or pre-production parts for approval before mass production. Sample costs depend on the complexity of the part and whether new tooling is required. In many cases, the sample charge can be deducted from the first mass order. Courier freight is normally paid by the customer, or shipped on your account (DHL / FedEx / UPS / TNT).
What is the typical lead time for a new project?
Lead time depends on part complexity and quantity, but as a reference:
Tooling & initial samples: about 2–4 weeks after drawing confirmation and deposit.
Mass production: usually 3–5 weeks after sample approval.
We will always confirm a detailed schedule in our quotation and keep you updated during production. If you have an urgent deadline, please tell us in advance so we can plan capacity accordingly.
What file formats do you accept for drawings?
We accept most common 2D and 3D engineering formats, including STEP (.step / .stp), IGES (.igs / .iges), Parasolid (.x_t), DWG, DXF, and PDF. For best accuracy, we recommend sending both 3D models (STEP/IGES) and 2D drawings with dimensions and tolerances. If you are unsure which format to use, send what you have and our engineers will review it for you.
Our Certificate
Third-party verification supports supplier approval. Below are our ISO 9001 certificate, SGS test report, and CNIPA utility model patents. If you need a PDF copy for internal review, tell us which document you require.
A Brief Self-Nomination, Why Choose Prime?
Choose Us, you will get cost-effective, high-quality, on-time delivery of metal forgings solutions.
Experience: We have more than 30 years of metal forging production experience, can provide a variety of industries with high-quality custom metal forgings.
Professional team: Our Team of Engineers is familiar with the forging process and can provide precise design and production services.
High quality assurance: We are ISO 9001 certified to ensure that each forging meets the highest standards of quality.
Rapid Response: We are committed to providing fast sample production and production cycle, to ensure that your needs can be met in a timely manner.
Global Services: No matter where you are, we can provide you with quality services to ensure the smooth progress of your business.
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