1 / 3
China Custom Tungsten Carbide Cylindrical Parts with Slotted Top Supplier, Suppliers
Product Description
Tungsten Carbide Rods Overview
Manufacturing Precision
Formed through high-precision pressing or extrusion molding and processed through integrated low-pressure vacuum sintering furnaces for exceptional overall structural density.
Tolerances & Finishing
Available as rough blanks or precision-ground bars ground to tight tolerances (h5, h6, -0.005mm) with custom chamfering options tailored to production requirements.
Broad Machinability
Engineered for machining general steel, cast iron, stainless steel, heat-resistant steel, nickel-base alloys, and titanium alloys across standard and high-speed CNC operations.
Tooling Applications
Widely adopted as base material for cutting tools including solid carbide twist drills, end mills, reamers, taps, and high-precision gun drills.
Key Material Characteristics
- Superfine Raw Materials: Fabricated using premium superfine tungsten carbide powder for balanced toughness and hardness.
- 10MPa HIP-Sinter Technology: Sintered in standardized 10MPa overpressure vacuum furnaces to eliminate microscopic pores.
- High Mechanical Properties: Exceptional red hardness, wear resistance, elevated transverse rupture strength (TRS), and superior modulus of elasticity.
- Stable Physical Properties: Superior impact resistance, chemical stability, low thermal expansion coefficient, and iron-equivalent conductivity.
Tungsten Carbide Material Grade Specifications
| Grade | ISO Grade | Grain Size | Cobalt Content | Density | Hardness | TRS | Application Scope |
|---|---|---|---|---|---|---|---|
| μm | % | g/cm³ | HRA | N/mm² | |||
| A06 | K05-K10 | 1.0 | 6 | 14.95 | 92.60 | 4000 | Semi-finishing and finishing milling/drilling of materials (HRC 48-55) at medium-to-high speeds: stainless steel, heat-resistant alloys, die steel, cast iron, 7-series aluminum, and titanium alloys. |
| A06U | K05-K10 | 0.7 | 6 | 14.95 | 93.30 | 4000 | Mills and drills with D ≥ 0.8mm; widely used in woodworking industry tooling. |
| A06UF | K05-K10 | 0.4 | 6 | 14.90 | 93.80 | 4200 | Micro mills and drills with 0.4mm ≤ D ≤ 1.6mm. Superior centralized particle distribution offering outstanding stability and wear resistance. |
| A09N | K10-K20 | 0.2 | 9 | 14.40 | 93.60 | 4500 | Hardened steels below HRC60, non-alloy metals, high-hard plastics, composites, and titanium alloys. Nano-particle structure delivering ultra-high toughness for high-speed cutting tools. |
| A10F | K20-K30 | 0.7 | 10 | 14.45 | 91.80 | 4000 | Roughing and semi-finishing milling of heat-treated steel, common alloy steel, cast iron, and materials below HRC45. |
| A12U | K30-K40 | 0.4 | 12 | 14.25 | 92.30 | 4200 | Roughing and semi-finishing milling of metals (HRC 45-52), including stainless steel, aluminum alloys, alloy steel, and non-ferrous metals. |
| A12UF | K30-K40 | 0.4 | 12 | 14.14 | 92.80 | 4200 | High-grade formulation suitable for semi-finishing of high-hardness steels below HRC55. |
Types and Dimension Tolerances
Available in standard and cut-to-length configurations with exact dimensional standards:
| 1. Tolerance of Unground Long Rods | ||
|---|---|---|
| Size (D × L, mm) | Tolerance (mm) | |
| Diameter (D) | Length (L) | |
| D(1-3) × 310/330 | +0.30 ~ +0.55 | 0.00 ~ +4.00 |
| D(3-12) × 310/330 | +0.30 ~ +0.60 | 0.00 ~ +4.00 |
| D(12-20) × 310/330 | +0.30 ~ +0.65 | 0.00 ~ +4.00 |
| D(20-40) × 310/330 | +0.30 ~ +0.70 | 0.00 ~ +4.00 |
| 2. Tolerance of Unground Cut-to-Length Rods | ||
|---|---|---|
| Diameter Range (mm) | Tolerance of D & L (mm) | |
| L ≤ 70 mm | 70 < L ≤ 150 mm | |
| D < 5 | D(0.20~0.30), L(0.20~1.5) | D(0.25~0.35), L(0.20~1.5) |
| 5 ≤ D < 40 | D(0.25~0.35), L(0.20~1.5) | D(0.30~0.40), L(0.20~1.5) |
3. Ground Long Rods
Standard diameter tolerance is h5/h6 or customized according to drawing specifications. Standard length tolerance is 0.00 ~ +5.00mm.
4. Ground Cut-to-Length Rods
Standard diameter tolerance is h5/h6 (or custom requirement). Standard length tolerance is controlled within 0.00 ~ +2.00mm.
5. PCB Rods
Micro-grain carbide rods developed specifically for high-speed printed circuit board drilling and routing tools.
Manufacturing Capabilities & Quality Advantages
Backing our solutions with around 20 years of production and management experience, advanced process technology, high-precision machinery, and strict QC protocols:
1. Tungsten Carbide Blanks Production
Utilizing 100% virgin raw materials combined with advanced wet-milling, automated pressing, and sintering furnaces to maintain solid metallurgy for subsequent high-precision grinding.
2. Inspection and Testing Process
A dedicated Quality Control Center implements end-to-end inspections—raw material screening, on-site monitoring, and post-machining validation—ensuring reliable product conformance.
3. Advanced CNC Equipment
Equipped with precision surface grinders, internal/external OD and ID grinding machines, centerless grinders, CNC machining centers, EDM, and wire-cutting machinery for tight-tolerance rod manufacturing.
4. Packaging and Shipping
Custom-engineered protective boxes and shockproof tubes protect carbide rods throughout transit. Flexible international logistics include express shipping (DHL/FedEx/UPS/TNT), air cargo, and sea freight.
Frequently Asked Questions
Q
What workpiece materials can be processed with these solid carbide rods?
Our solid carbide rods are engineered for processing general steels, cast iron, stainless steels, heat-resistant steels, die steels, titanium alloys, nickel-base superalloys, 7-series aluminum alloys, and reinforced composite materials up to HRC60.
Q
What grinding tolerances are achievable on the finished carbide rods?
Ground long rods and cut-to-length rods standardly offer ISO h5 or h6 diameter tolerances, or custom precision limits down to -0.005mm upon request. Length tolerances are kept within 0.00 to +2.00mm or +5.00mm, with end chamfering available.
Q
How does 10MPa HIP sintering improve carbide performance?
The high-pressure vacuum HIP (Hot Isostatic Pressing) sintering process operates at 10MPa to virtually eliminate micro-porosity within the material structure. This substantially elevates bulk density, hardness, wear resistance, and transverse rupture strength (TRS).
Q
Which carbide grade is best suited for high-hardness cutting above HRC55?
Grade A09N (0.2μm grain size, 93.60 HRA, 4500 N/mm² TRS) is optimized for hardened steels up to HRC60. Grade A06 and A12UF are also suited for materials up to HRC55.
Q
What standard forms and rod lengths are supplied?
We supply unground continuous long rods (standard 310mm and 330mm lengths), unground cut-to-length pieces, ground long bars, precision ground cut-to-length blanks, and specialized PCB micro-drilling rods.
Q
How are carbide rods packaged to prevent chipping during international shipping?
Carbide rods are protected in individually fitted plastic tubes and impact-resistant cartons to safeguard ground surfaces and sharp edges against shock and moisture throughout express, air, or ocean transit.
