2025 Wholesale Cold Heading Nut Forging Tungsten Carbide Die for Making Screws Bolts
Insert Material Options
We provide different carbide materials tailored for specific applications:
| 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 |
| 0.39% |
1.15% |
0.44% |
0.021% |
0.007% |
5.12% |
1.3% |
0.94% |
0.06% |
| Cu |
Ni |
|
| 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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