Stamping Terminal Die, Electrical Connector Die, Progressive Terminal Die

Q: 1. Can you do small batch stamping?

Yes. Prototype or soft tooling allows for cost-effective small runs before committing to hard tooling for high volume.

Q: 2. What secondary operations are commonly needed?

Deburring, tapping, welding, staking, heat treating, plating, painting, and degreasing.

Q: 3. How long does tooling take?

Simple tools: 2–4 weeks; complex progressive dies: 6–10 weeks or more.

Q: 4. What surface treatment can you provide?

Powder coating, zinc plating, hot-dip galvanizing, polishing, wet paint, anodic oxidation, electrophoretic paint, passivation, etc.

Q: 5. Can Yixing technology Provide PPAP Services and Documentation?

Yes. We are quite familiar with the Production Part Approval Process for Automotive industry customers, which is also similar to documentation and project management required in the military, aerospace, and nuclear industries.

Advantages of Our Company in Terminal Stamping Mold Manufacturing

Terminals are essential core components in electronic connectors. Stamping terminal dies and progressive terminal dies are precision tooling systems used to manufacture them from metal strip. Progressive dies perform multiple operations—piercing, blanking, bending, forming, and cutting—in a single continuous pass, enabling high-volume production with consistent quality and minimal material waste.

Our company excels in meeting these requirements.

Our Stamping Terminal Manufacturing Capability

Capability Item	Specification
Precision Tolerance	±2 µm (machined features)
Bending Angle Tolerance	±0.5° (typical), tighter on request
Pin Pitch Tolerance	< 0.1 mm
Stamping Speed	1,000+ SPM (strokes per minute)
Die Life	10 million strokes (10,000K)
Press Tonnage	Up to 200 tons
Number of Stations	Up to 10+ stations (progressive die)
Strip Thickness Range	0.1 mm – 4.0 mm
Die Steel (Punches / Inserts)	SKD11, DC53, SKH-51, Tungsten carbide: YC20C, YG20
Die Clearance	3–8% of strip thickness (material dependent)
Burr Height	≤ 0.05 mm (typical), ≤ 0.02 mm on request
Flatness	≤ 0.05 mm / 100 mm
Surface Finish (Die)	Ra 0.2–0.4 µm (critical surfaces)
Plating Options	Tin, silver, gold, nickel
Quality Control	CMM, vision inspection, SPC, CPK ≥ 1.33

Applicable Materials

1. Common U.S. Grades (UNS / AISI)

Material Category	Common Name	Typical U.S. Grades (UNS / AISI)	Common Standards
Pure Copper	Copper strip / ETP copper	C11000 (ETP), C10200 (OF), C10100 (OFE)	ASTM B152 / B170
Phosphor Bronze	Phos bronze	C51000 (5% Sn), C52100 (8% Sn), C52400	ASTM B103
Brass	Brass	C26000 (cartridge brass 70/30), C26800, C22000 (commercial bronze 90/10)	ASTM B36
Stainless Steel	Stainless steel	301, 304, 304L, 316, 316L, 430	ASTM A666 / A240

2. Material Selection Guide (Terminal / Connector Applications)

Requirement	Recommended Material
High conductivity, low resistance (power terminals)	C11000 copper
High spring force, fatigue resistance (contact springs)	C51000 / C52100 phos bronze
Low cost, general conductivity (standard terminals)	C26000 brass
High strength, corrosion resistance, high temperature	301 / 304 stainless steel
Magnetic or low-cost corrosion resistance	430 stainless steel
High mating cycles, miniaturized terminals	C52100 phos bronze, 301 SS

High Quality Progressive Dies for High Quality Terminals

PRECISION GUIDING

We employ high precision-guided systems—including ball-bearing guide posts and bushings, as well as dual guiding mechanisms. High precision ensures the upper and lower dies alignment during high-speed stamping.

STABLE PLATE ASSEMBLY

Manufactured with the highest tolerances, our plate assemblies prevent movement or deformation during die clamping, ensuring consistent stamping in production.

WEAR-RESISTANT MATERIALS

These are the "actuators" that carry out all the operations; the material grade always determines the mold life. All punches and dies are fabricated from ultra-hard, wear-resistant materials—such as high-speed steel SKH-51, SKD11, DC53, and tungsten carbide alloys (YC20C, YG20)—ensuring longevity and consistent performance.

AUTOMATIC FEEDING

Our automatic feeding system feeds the material into the die step-by-step. Additionally, guide pins engage with pre-punched positioning holes before each station, correcting any feeding misalignment.

REAL-TIME MONITORING

Misalignment or feeding errors are instantly monitored; the system will automatically shut down to prevent mold damage and reduce downtime.

Our Process Flow

DFM Design → Die Manufacturing (CNC / Wire EDM / EDM) → Die Assembly → Trial Run (T1) → Small-Batch Validation → Mass Production

DFM – Review drawings, strip layout, stations, clearance, springback.
Die Manufacturing – CNC, wire EDM, sinker EDM, grinding, heat treatment, coating, inspection.
Die Assembly – Assemble plates, punches, pilots, springs; set clearance and feed.
Trial Run (T1) – Mount die, run samples, check dimensions, burr, angle; adjust.
Small Batch – 500–5,000 pcs; CPK/PPK, tool wear, plating, PPAP approval.
Mass Production – High-speed stamping, SPC, maintenance, plating, packaging.

Why Choose Yixing Technology?

Our company excels in meeting these requirements by our advanced process capabilities and expertise:

ULTRA-PRECISION

To ensure reliable matching with other components, critical features such as bend angles and pin pitches must be held within tolerances of less than 0.1 mm. This requires molds with superior precision. Our machining equipment's tolerances reach ±2 µm, significantly exceeding the standards of stamping dies.

BURR-FREE STAMPING

To ensure optimal conductivity and flawless plating, terminal surfaces must be free of burrs and scratches. Minor burs can lead to short circuits. Our molds feature sharp cutting edges and precisely controlled clearances, enabling clean, burr-free stamping.

MULTI-PROCESS INTEGRATION

Modern terminals often require multiple forming operations—such as blanking, bending, cutting, and deep drawing—integrated into a single progressive die. Our mold designers specialize in creating complex, multi-processes into one progressive die.

HIGH-SPEED DURABILITY

Because of the high-volume demand for terminals, the mold often needs 1,000+ strokes per minute. To support continuous and high-speed operation, our molds are made from high-rigidity, high-toughness materials, such as SKD11, DC53, and tungsten carbide alloys, ensuring durability and long service life.