Closed Die Forged Parts Supplier | Factory Price – Chewit

Buyers who source closed die forging parts from China usually ask the same questions. Can the supplier make my drawing? Which materials and weights are available? How is quality controlled? What decides the price?
This guide answers those questions. It is based on the capabilities Chewit lists for its closed die forged parts: carbon, alloy and stainless steel, plus aluminum, copper and brass, in weights from 0.5 kg to 100 kg. Use it to prepare your inquiry, compare suppliers, and avoid delays at the quotation stage.

What Are Closed Die Forged Parts? (Impression Die Forging Explained)

 
Closed die forging parts are metal components shaped between two or more dies. Each die holds an impression of the final part. The process is also called impression die forging.
A heated metal billet is placed between the dies. Under high pressure, the metal flows and fills the die cavity. The result is a near-net-shape part with high strength, a refined grain structure and accurate dimensions.
Because the dies control the shape, every part stays close to your drawing. This is why buyers choose closed die forged parts for repeat orders where consistency matters, such as gears, crankshafts, valves and other load-bearing components.

Closed Die Forged Parts Supplier: Chewit Forging Since 2001

Chewit Forging was founded in 2001. It is a high-tech company that covers research and development, production and sales of open die and closed die forging products. Zhangjiagang Chewit International Co., Ltd., located in Jingang Town, Zhangjiagang City, Jiangsu Province, China, handles international orders.
Our forgings serve machinery, hardware, energy, aerospace and automotive customers. If your project also needs larger or simpler shapes, you can review our open die forging parts.
Many buyers need tubes as well as forgings. Chewit also supplies seamless steel tube, stainless steel tube, alloy steel tube, hydraulic steel tube, cold drawn steel tube and aluminum tube. Sourcing from one supplier can simplify communication and purchasing.

Closed Die Forged Parts Specifications: Material, Size and Heat Treatment

The table below shows the standard specification range for our closed die forging parts. Special requirements are handled case by case.

Item	Specification
Process	Hot forging, closed die forging
Materials	Carbon steel, alloy steel, stainless steel, aluminum, copper, brass
Weight range	1 kg to 5000 kg
Heat treatment	N, SR, N+T, Q+T, solution, and others on request
Surface treatment	Sand blasting, galvanizing, chrome plating, nickel plating, and others
Applications	Automotive, hardware, machinery, construction, electronic components, power transmission, logistics and transportation

Tolerance, testing requirements and minimum order quantity depend on the part. Please include them in your inquiry so our engineers can confirm what is possible.

Materials We Forge: Carbon Steel, Alloy Steel, Stainless Steel, Aluminum, Copper and Brass

Material choice affects strength, corrosion resistance, weight and cost. These are the options we offer:
  • Carbon steel: a practical choice for general machinery and hardware parts.
  • Alloy steel: higher strength and toughness, common in drivetrain and heavy-duty parts.
  • Stainless steel: corrosion resistance for valves, fittings and wet or chemical environments.
  • Aluminum: lightweight forged parts where weight reduction matters.
  • Copper and brass: used for electrical parts and fittings.
Tell us the grade or standard you need, such as ASTM, EN, DIN or GB. If you are not sure, send your working conditions and load requirements, and our team can discuss suitable options with you.

Custom Closed Die Forged Parts from 1kg to 5000 kg

We produce custom closed die forged parts from 1 kg to 5000 kg. This range covers small hardware components as well as heavy machinery parts.
For very small components, see our forging small parts. If your part is larger than 100 kg or has a simple shape, open die forging may be more suitable. Send your drawing and we will review the best route.
Custom work usually starts with your 2D or 3D drawing. Our team checks the shape, material and forging direction, then designs the die and confirms the process before production.

Closed Die Forging Process: From Heated Billet to Finished Part

 
A typical closed die forging process includes these steps:
1. Drawing review and die design. Engineers check the part shape and design the dies.
2. Billet cutting. Raw material is cut to the required size and weight.
3. Heating. The billet is heated to forging temperature.
4. Forging. The hot billet is pressed in the dies until the metal fills the cavity.
5. Trimming. Excess material (flash) is removed.
6. Heat treatment. The part is treated to reach the required mechanical properties.
7. Machining and surface treatment. Finishing steps are added as needed.
8. Inspection and packing. Parts are checked and packed for export.
Each step affects final quality. When you send an inquiry, tell us which checks matter most to you, such as dimensions, hardness or material reports.

Heat Treatment Options: N, SR, N+T, Q+T and Solution

Heat treatment sets the strength, hardness and toughness of the finished part. We offer these options:
  • N (normalizing): refines grain structure and improves uniformity.
  • SR (stress relieving): reduces internal stress after forging or machining.
  • N+T (normalizing and tempering): balances strength and toughness.
  • Q+T (quenching and tempering): delivers higher strength and hardness for demanding parts.
  • Solution treatment: commonly used for stainless steel to improve corrosion resistance.
Please state your required hardness or mechanical properties in your inquiry. Other heat treatment methods are available on request.

Surface Treatment for Forged Parts: Sand Blasting, Galvanizing, Chrome and Nickel Plating

Surface treatment protects the part and prepares it for use or assembly.
  • Sand blasting: removes scale and gives a clean, even finish.
  • Galvanizing: adds a zinc layer for corrosion protection.
  • Chrome plating: improves wear resistance and appearance.
  • Nickel plating: adds corrosion resistance and a smooth surface.
If you need a specific coating thickness or corrosion test, include it in your request. This helps avoid rework after the sample stage.

Closed Die Forged Parts for Automotive: Crankshafts, Connecting Rods and Gears

Automotive parts face repeated load and vibration. Closed die forged parts suit these conditions because the grain flow follows the part shape and the dimensions stay consistent across batches.
Common automotive applications include:
  • Crankshafts
  • Connecting rods
  • Gears and drivetrain components
For OEM and aftermarket buyers, repeatability is as important as strength. Share your annual volume so we can plan tooling and production with you.

Forged Parts for Aerospace, Oil & Gas and Industrial Machinery

Beyond automotive, our closed die forging parts are used in other demanding fields:
  • Aerospace: landing gear components and turbine disks.
  • Oil and gas: downhole tools, valves and fittings for harsh environments.
  • Industrial: hand tools, industrial blades and heavy machinery parts.
  • Other sectors: hardware, construction, electronic components, power transmission, and logistics and transportation.
Aerospace and oil and gas projects often require specific standards and test documents. Please state them clearly in your inquiry so we can confirm before quoting.

Benefits of Closed Die Forged Parts: Strength, Grain Flow and Dimensional Accuracy

 

Why Buyers Choose Closed Die Forging Parts

  • Strength and grain flow. Forging refines the internal grain and aligns it with the part shape. This supports strength and fatigue resistance.
  • Dimensional accuracy. Precision dies produce near-net-shape parts, so less machining is needed.
  • Consistency. The same dies repeat the same shape, which suits long-term supply.
  • Material efficiency. Near-net-shape forging wastes less material than cutting a part from solid bar.
These benefits matter most for safety-critical, high-load or high-volume parts.

Closed Die Forging vs Open Die Forging vs Casting: Which Should You Choose?

The right process depends on part shape, size and order quantity. This comparison gives a general guide:

Factor	Closed die forging	Open die forging	Casting
Shape	Complex, near-net shape	Simple shapes	Complex shapes
Typical size	Small to medium parts	Large, simple parts	Wide range
Tooling	Dies required	Simple tooling	Molds required
Best quantity	Medium to high volume	Low volume, custom	Medium to high volume
Internal structure	Refined grain flow	Refined grain	Risk of porosity or shrinkage
Machining needed	Less	More	Varies by part

Choose closed die forging when you need repeatable shapes, strong load-bearing performance and steady supply. Choose open die forging for large or simple parts in small quantities. Casting can suit complex shapes with lower strength demands.

Factory Price: What Affects the Cost of Closed Die Forged Parts?

There is no single price for closed die forged parts. The final quotation depends on several factors:
  • Material grade and current raw material cost
  • Part weight and shape complexity
  • Die and tooling requirements
  • Order quantity and annual volume
  • Heat treatment and surface treatment
  • Machining, testing and documents
  • Packing and shipping terms, such as FOB or CIF
To get a clear factory price, ask for tooling cost and unit price separately. You can often lower cost by using standard material grades, simplifying the design and sharing your yearly demand.

How to Order Custom Closed Die Forged Parts from Chewit (Drawing, Quote, Sample)

 
The ordering process is simple. Send your inquiry with as much detail as you can:
1. Send your drawing. A 2D or 3D file is best.
2. State your requirements. Include material, quantity, heat treatment, surface treatment and testing needs.
3. Receive a quotation. We review the drawing and reply with price and process details.
4. Confirm the sample. If you need a sample before mass production, mention it in your inquiry.
5. Start production and shipping. We arrange export packing for your destination port.
You can contact our sales team by form, email or WhatsApp.

Supplier Selection Tips for Forging Buyers

  • Ask how the supplier checks material and dimensions before shipment.
  • Confirm who owns the dies and how they are stored.
  • Request a sample or first-article check for new parts.
  • Check how fast the supplier answers technical questions.
  • Make sure the supplier can support your surface treatment and heat treatment needs.

Closed Die Forged Parts FAQ

What materials do you use for closed die forged parts?

We forge carbon steel, alloy steel, stainless steel, aluminum, copper and brass. Tell us your grade or standard, or share your working conditions.

What weight range can you produce?

Our closed die forging parts range from 0.5 kg to 100 kg. For parts outside this range, send your drawing and we will review it.

Can you make parts from my drawing?

Yes. We make custom forgings from customer drawings. A 2D or 3D file helps us review the shape and design the dies faster.

Which heat treatment and surface treatment do you offer?

Heat treatment options include N, SR, N+T, Q+T and solution treatment. Surface treatments include sand blasting, galvanizing, chrome plating and nickel plating. Other methods are available on request.

What is the difference between closed die and open die forging?

Closed die forging shapes metal inside die cavities and gives near-net-shape parts with tight repeatability. Open die forging uses simple tools and suits large, simple parts in low volume.

What should I include when I ask for a quotation?

Please include your drawing, material, quantity, heat treatment, surface treatment, testing needs and destination port. Also tell us if you need minimum order quantity, tolerance or delivery time confirmed.

Conclusion

Choosing a supplier of closed die forging parts comes down to clear specifications, reliable process control and open communication. Chewit offers custom closed die forged parts in carbon, alloy and stainless steel, aluminum, copper and brass, from 0.5 kg to 100 kg, with heat treatment and surface treatment options.
If you are planning a new project or comparing suppliers, we are happy to review your drawing and discuss materials, samples and pricing. Contact us for product details, a quotation or technical support.
Email: sale@chewit.cn
WhatsApp / Phone: +86 18962244644
Address: Shuangshan Road, Jingang Town, Zhangjiagang City, Jiangsu Province, China