High-Precision Tungsten Carbide Punch Pins
Custom-engineered Tungsten Carbide (Cemented Carbide) Cold Heading Punches and Special-Shaped Non-Standard Dies designed to withstand high-strength impact and complex geometries. Combining world-leading tungsten carbide grades with micron-level CNC machining for extended service life in automotive, fastener, and aerospace industries.
Key Features
- Premium Material Grade: Wide range of high-quality tungsten carbide grades tailored to specific working conditions for exceptional dimensional stability
- Micron-Level Precision: Advanced CNC grinding and EDM technologies achieve stable tolerances within 0.01mm
- Superior Impact Resistance: Optimized grain size and cobalt content ratio prevents chipping and premature cracking
- Tailor-Made Geometry: Specialized non-standard designs with exact 1:1 replication from 2D/3D drawings
- Advanced Surface Finish: Professional mirror polishing (Ra < 0.1) and optional PVD coatings extend tool lifespan 3-5 times
Typical Applications
Automotive Industry: High-strength engine bolts, special-shaped pins, steering system components
Precision Fasteners: Non-standard socket head cap screws, Torx head bolts, specialized stepped screws
Electronics & Aerospace: High-precision, micro-sized cold heading components requiring strict material integrity
Insert Material Options
| Item |
Co |
Grain Size |
Density |
Hardness |
TRS |
Impact Strength |
Application |
| Medium-Grained |
| KG2 | 6.50% | 2~3 μm | 14.90 g/cm² | 90.5 HRA | 320 Kgf/mm² | 0.28 Kgf/m-cm² | Drawing die |
| KG3 | 9% | 2~3 μm | 14.61 g/cm² | 89.3 HRA | 340 Kgf/mm² | 0.52 Kgf/m-cm² | Extrusion die |
| KG5 | 12% | 2~3 μm | 14.31 g/cm² | 88.3 HRA | 340 Kgf/mm² | 0.58 Kgf/m-cm² | Extrusion die |
| KG6 | 14% | 2~3 μm | 14.12 g/cm² | 87.3 HRA | 320 Kgf/mm² | 0.65 Kgf/m-cm² | Extrusion die |
| Coarse-Grained |
| ST6 | 15% | 3~6 μm | 13.80 g/cm² | 86.0 HRA | 270 Kgf/mm² | 0.78 Kgf/m-cm² | Stainless steel |
| ST7 | 20% | 2~6 μm | 13.40 g/cm² | 85.3 HRA | 270 Kgf/mm² | 0.80 Kgf/m-cm² | Stainless steel |
| EA65 | 18% | 2~6 μm | 13.73 g/cm² | 85.0 HRA | 300 Kgf/mm² | 0.80 Kgf/m-cm² | Carbon steel screw/cutting die |
| VA80 | 20% | 3~6 μm | 13.58 g/cm² | 84.0 HRA | 280 Kgf/mm² | 0.85 Kgf/m-cm² | Impact resistance |
| VA90 | 22% | 6~9 μm | 13.39 g/cm² | 82.5 HRA | 240 Kgf/mm² | 0.90 Kgf/m-cm² | Impact resistance |
| EA90 | 24% | 2~6 μm | 13.22 g/cm² | 82.8 HRA | 270 Kgf/mm² | 0.90 Kgf/m-cm² | Impact resistance |
Case Material
Primary case material: H13(SKD61) HRC46-48
SKD61(H13) Chemical Composition
| C |
Si |
Mn |
P |
S |
Cr |
Mo |
V |
W |
Cu |
Ni |
| 0.39% |
1.15% |
0.44% |
0.021% |
0.007% |
5.12% |
1.3% |
0.94% |
0.06% |
0.05% |
0.06% |
Surface Treatment
Available options: TiN / TiAlN
About Chongqing Henghui Precision Mold Co., Ltd.
We specialize in manufacturing high-quality precision molds for cold heading and hot upsetting industries. Our facility includes CNC lathes, machining centers, grinding machines, EDM machines, and comprehensive testing equipment. We maintain strict quality control with precision standards of 0.005mm deviation and 0.01mm concentricity, operating under ISO9001:2015 certification.
Our products are exported globally to Southeast Asia, Europe, and the United States. We adhere to the principles of "Customer first, quality first, technology first, dedicated service."
Packaging & Delivery
Packaging: Carton Box; Export Standard Package, or customized per client requirements.
Delivery Time: 12-45 days depending on order quantity.
Frequently Asked Questions
Q1: How can I get a quotation from your company?
A1: Contact us with your drawings, material specifications, quantity requirements, and surface treatment preferences for a prompt quote.
Q2: What is your lead time?
A2: Lead time depends on product customization and destination country.
Q3: What is your minimum order quantity (MOQ)?
A3: MOQ varies by product. Contact our sales team for details.
Q4: What payment methods do you accept?
A4: We accept T/T, L/C, and PayPal.
Q5: What is your after-sales service like?
A5: We provide technical support, product repair, and replacement services.
Q6: How can I get your product catalog and quotation?
A6: Contact our sales team through our official channels for immediate assistance.
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