If you’re looking for precision metal parts at competitive prices, custom metal stamping service in China is likely on your radar. From automotive brackets and electronic connectors to medical device components and equipment housings, stamping is one of the most efficient ways to produce high-quality metal parts in volume.
But what exactly is custom metal stamping? How do you choose the right supplier? And what should you watch out for when sourcing from China?
What Is Custom Metal Stamping?
The process supports:
- High-volume production – cycle times can be as fast as several parts per second
- Complex geometries – multiple forming steps happen in one die set
- CAD drawing or 3D model (PDF, DWG, STEP, or IGES)
- Material specification (grade and thickness)
- Estimated annual quantity (critical for tooling cost allocation)
- Surface finish requirements (plating, powder coating, anodizing, etc.)
- Any special tolerance requirements
Click to learn more: Key Advantages of Cold Stamping
Types of Custom Metal Stampings
Not all stamping is the same. Depending on your part complexity and volume, manufacturers use different approaches:
| Type | How It Works | Best For |
|---|---|---|
| Progressive Die Stamping | Metal strip passes through multiple stations, each performing a specific operation in sequence | High-volume, precision small parts (connectors, terminals, contacts) |
| Compound Die Stamping | A single station performs multiple operations simultaneously | Medium-volume parts with simple shapes |
| Transfer Die Stamping | Parts are transferred between stations using automation | Larger parts or complex geometries |
Materials for Custom Metal Stampings
| Material | Key Properties | Common Applications |
|---|---|---|
| Cold-rolled steel (CRS) | Strong, cost-effective, good surface finish | Brackets, enclosures, industrial parts |
| Stainless steel (304/316) | Corrosion-resistant, durable | Medical, food , outdoor equipment |
| Aluminum (5052/6061) | Lightweight, good conductivity | Electronics, automotive, aerospace |
| Copper & brass | Excellent electrical/thermal conductivity | Electrical terminals, connectors |
Design Tips for Custom Metal Stamps
| Design Factor | Guideline | Why It Matters |
|---|---|---|
| Inside bend radius | ≥ 1.0× material thickness | Prevents cracking |
| Hole-to-bend distance | At least 2-3× thickness from bend line | Prevents hole distortion during bending |
| Edge distance | Minimum 1-2× material thickness | Prevents weak edges and burrs |
| Corner radius | At least 0.5× thickness on internal corners | Extends die life, prevents stress points |
| Bend relief | Add small notches at bend ends | Prevents tearing at the bend intersection |
How to Choose a Reliable Custom Metal Stamping Supplier
When evaluating suppliers, look beyond price. Here’s a practical checklist:
| Factor | What to Check |
|---|---|
| Technical capability | In‑house tooling design? Press tonnage range? Material experience? |
| quality standard | Random inspection/Full inspection |
| Sample process | Can they provide first‑article samples for approval before mass production? |
| Lead time | Tooling typically 4‑8 weeks; production 1‑3 weeks after approval |
| On‑time delivery | Target ≥95% |
| Communication | Response within 48 hours; clear answers, not just “yes” |
Common Quality Issues and How to Avoid Them
| Problem | Cause | Solution |
|---|---|---|
| Cracking | Bend radius too small; bend parallel to grain | Increase bend radius; reorient part |
| Springback | Material memory; insufficient die compensation | Over-bend the die; use coining to set bend |
| Excessive burrs | Worn cutting edge; improper clearance | Sharpen die; adjust punch-to-die clearance |
| Warping | Uneven stress relief; unbalanced forming forces | Add stiffening ribs; use re-striking operations |
What Information Does a Supplier Need for a Quote?
If you don’t have a complete drawing, many Chinese suppliers can work from sample parts, photos, or even basic sketches,However, in the early stage(In the absence of drawings), it is necessary to confirm the specific product size specifications through the process sampling of sheet metal processing to ensure the size for the batch production of stamping
Contact Us
Click here： Contact Us
Email: [email protected]
Author：David Wu
URL: https://zhmfr.com
video URL：https://www.youtube.com/@David-OEM
China Kewei Intelligent Technology Co., Ltd
Address：No. 23, Yexing Road, Xiangxi Industrial Zone, Liaobu Town, Dongguan City, Guangdong Province, China
With our profound expertise in customized sheet metal manufacturing services, CNC milling and turning, and metal stamping processing, we meet the complex needs of the automation equipment industry, new energy storage industry, and manufacturing industry. Our service portfolio includes automation equipment enclosures, precision mechanical parts, energy storage cabinet enclosures, and other customized metal products. We use advanced laser cutting, welding, and forming technologies to produce parts with strict tolerances and excellent surface finish. Whether you need small batch prototypes for research and development or large-scale production for assembly lines, our scalable solutions ensure the quality, cost-effectiveness, and on-time delivery of your industrial projects
相关文章：
The Complete Guide to Sheet Metal Fabrication: Processes, Materials, and Best Practices
Custom Cut Sheet Metal: A Complete Guide for Buyers and Engineers
Metal Stamping Process: A Complete Guide to Custom Metal Stamping Services
Custom Metal Enclosures in China: Your Complete Guide to OEM Sheet Metal Housings