Precision Milling, Strips & Heavy-Duty Inserts
Direct factory supply of high-grade tungsten carbide and custom alloy solutions optimized for high-temperature and extreme wear performance.
Wholesale Factory Custom Tungsten Carbide Spiral Bevel Gear Milling Cutters
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China High-Quality Tungsten Carbide Strips - Durable Cemented Wolfram Bars
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Sintered Cemented Carbide Stone Wood Diamond Cutting Tools
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China Square Tungsten Special Carbide Tools Button Insert
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Cemented Tungsten Carbide Gripper Inserts/Tips for Mining and Diamond Drilling
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Steel Pipe Scarfing Tools SPUB63J Tube Scarfing Inserts
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China Tungsten Tool Holder Lathe Cemented Carbide Cutting Tool Inserts
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SPUB86C Customized Lathe Drill Bit Inserts for Heavy Processing
Request SpecsMetallurgical Architecture of Tungsten Nickel Alloys
Engineered at the crystalline level to decouple ferromagnetic attraction and resist severe corrosion, outperforming conventional cobalt-bonded systems.
Non-Magnetic WC-Ni Chemistry
By substituting ferromagnetic cobalt with a refined nickel binder phase, our tungsten nickel alloys achieve a relative magnetic permeability ($\mu_r$) approaching 1.005. This eliminates parasitic magnetic interference in Measurement-While-Drilling (MWD) housings and sensitive sensor sleeves.
Passivation & Electrochemical Resistance
Cobalt binders rapidly leach in acidic environments (pH < 6). The nickel solid-solution matrix generates a spontaneous passivation film that resists electrochemical attack across petrochemical refining fluids, saltwater drilling muds, and aggressive synthetic battery slurries.
High-Density Heavy Alloys (W-Ni-Fe / W-Ni-Cu)
Beyond wear applications, our liquid-phase sintered tungsten heavy alloys achieve densities from 17.0 to 18.8 g/cm³. These deliver critical radiation attenuation against gamma-ray/X-ray vectors and provide compact, high-inertia balance weights for aerospace avionics.
Mission-Critical Industrial Solutions
How global industrial leaders integrate tungsten nickel systems into harsh operational environments where conventional carbides fail.
Downhole Oil & Gas (MWD/LWD)
Precision guidance sensors rely on magnetic azimuth measurements. Our non-magnetic tungsten nickel wear sleeves, mud flow restrictors, and valve stems ensure zero electromagnetic interference while withstanding abrasive drilling fluids up to 15,000 PSI.
Nuclear & Radiotherapy Shielding
W-Ni-Fe/W-Ni-Cu multi-leaf collimators and radioisotope containers provide up to 40% superior attenuation compared to lead, with zero environmental toxicity, exceptional mechanical stability, and high dimensional machinability.
Aerospace Vibration Dampening
High-inertia rotatory masses, balance components for flywheels, and anti-chatter boring bars leverage the extreme modulus of elasticity (380-420 GPa) and mass density of tungsten nickel alloy to neutralize harmonic oscillations in supersonic turbines.
Supply Chain Resilience & Upstream Dominance
Direct integration into Jiangxi's world-leading tungsten mineral reserves ensures continuous material integrity, tariff compliance, and scalable production.
100% Virgin APT Feedstock
Zero recycled powder. Sourced directly from premier domestic ammonium paratungstate (APT) refineries, ensuring precise control over trace impurities (Fe, S, P < 20 ppm) to maintain metallurgical ductility.
Overpressure Sinter-HIP
Utilizing 10 MPa hot isostatic pressing (Sinter-HIP) during liquid-phase consolidation eliminates internal micro-voids, elevating theoretical density to 99.98% and removing the root causes of brittle fracture.
h6 Micron Precision Centerless Grinding
In-house 5-axis CNC machining, wire EDM profiling, and precision centerless cylindrical grinding achieve outer diameter tolerances of ISO h6 (+0/-0.008 mm) with mirror surface finishes down to Ra 0.05 μm.
Full Lot Traceability
Every shipment is matched to its corresponding batch powder master card, metallographic grain structure report (ASTM E112), and magnetic induction certifier documentation, assuring full quality audit compliance.
Standard & Custom Grade Specifications
Compare mechanical and physical attributes across our standard nickel-bonded wear grades and high-density tungsten heavy alloys.
| Alloy Grade Class | Composition (wt%) | Density (g/cm³) | Hardness (HRA / HRC) | Transverse Rupture Strength (MPa) | Magnetic Permeability (μ) | Primary Industrial Field |
|---|---|---|---|---|---|---|
| WN-6 (Non-Mag) | WC - 6% Ni | 14.90 - 15.05 | 90.5 - 91.5 HRA | ≥ 2,200 | < 1.005 | MWD Downhole Bushings, Magnetic Dies |
| WN-10 (Corrosion) | WC - 10% Ni | 14.45 - 14.65 | 88.0 - 89.5 HRA | ≥ 2,600 | < 1.010 | Battery Slurry Slitters, Chemical Valves |
| WN-15 (Toughness) | WC - 15% Ni | 13.90 - 14.15 | 85.5 - 87.0 HRA | ≥ 2,900 | < 1.020 | High-Impact Seal Rings, Hot Forging Inserts |
| Class 1 Heavy Alloy | 90W - 7Ni - 3Fe | 17.00 - 17.20 | 26 - 32 HRC | ≥ 920 (UTS) | 1.10 - 1.25 | Aircraft Balance Weights, Counter-Masses |
| Class 3 Heavy Alloy | 95W - 3.5Ni - 1.5Fe | 18.00 - 18.25 | 28 - 34 HRC | ≥ 950 (UTS) | 1.08 - 1.20 | Radiation Collimators, Nuclear Shielding |
| Class 4 Non-Mag Heavy | 95W - Ni - Cu balance | 18.00 - 18.20 | 25 - 30 HRC | ≥ 700 (UTS) | < 1.005 | Medical Linear Accelerators, Gyro Rotors |
Addressing Global Sourcing Requirements
Eliminating supply chain uncertainty for tier-1 defense, energy, and precision tooling manufacturers through systematic compliance frameworks.
RoHS, REACH & Conflict Minerals
All tungsten formulations operate under verified OECD Due Diligence Guidance for Responsible Supply Chains of Minerals. Certified free of conflict minerals (CMRT compliant) and meeting strict EU RoHS and REACH SVHC thresholds.
Global DDP & Consignment Logistics
We manage direct Delivered Duty Paid (DDP) shipments to manufacturing hubs across North America, Europe, and Asia-Pacific. Local bonded warehouse stocking programs and safety buffer inventory eliminate transit vulnerability.
Direct Metallurgy Engineering Support
No non-technical intermediaries. Technical inquiries connect buyers directly with materials scientists possessing 24+ years of cemented carbide formulation experience, delivering comprehensive feasibility and manufacturability analyses within 8 hours.
Frequently Asked Questions
Clear, direct answers regarding material mechanics, design guidelines, and order fulfillment.
Why choose nickel over cobalt as a binder in tungsten carbide?
Cobalt is naturally ferromagnetic and subject to galvanic leaching in humid, acidic, or saline environments. Nickel provides non-magnetic stability (relative permeability <1.01) and superior resistance to chemical dissolution, making it essential for MWD instrumentation, downhole tools, and aggressive wet processing.
What is the difference between WC-Ni cemented carbide and Tungsten Heavy Alloy (W-Ni-Fe)?
WC-Ni consists of hard tungsten carbide particles bonded by nickel, focused primarily on extreme wear, erosion, and cutting tool resistance. Tungsten Heavy Alloy (W-Ni-Fe/Cu) contains 90-97% pure metallic tungsten in a ductile binder, used predominantly for mass density, radiation absorption, and kinetic energy applications.
What precision tolerances can Zhongfu achieve on custom parts?
Using multi-axis CNC grinding and wire EDM, we achieve outer diameter tolerances of h6 (+0/-0.008 mm) on ground rods, flat blank surface parallelism within 0.005 mm, and surface finish roughness down to Ra 0.05 μm for high-pressure fluid seal faces.
Can you provide custom sintered blanks to reduce buyer machining costs?
Yes. Our in-house tool design and precision automatic pressing allow us to produce near-net-shape blanks, stepped rods, and internal coolant hole geometries. This significantly lowers downstream EDM, wire-cutting, and grinding costs for overseas tooling manufacturers.
What is the standard production lead time and minimum order quantity (MOQ)?
For standard grades, blanks, and rods, stock items ship within 48 hours. Custom tooling profiles, special sintered formulations, or complex EDM blocks generally run on a 15 to 25 business-day cycle. Prototype sampling starts at low MOQs down to individual pieces.
What quality assurance documentation accompanies export orders?
Every lot arrives with a formal Certificate of Analysis (CoA) containing density, HRA hardness, Transverse Rupture Strength (TRS), metallographic grain structure photos, coordinate measuring machine (CMM) dimensional verification, and magnetic permeability inspection data.
Gripper Inserts, Roll Crushing & Precision Blanks
Heavy wear parts, flat blank stock, and high-performance inserts designed to withstand extreme compressive loads and impact forces.
China Best Price YG8 Tungsten Carbide Gripper Inserts for Chuck Jaw
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China Best Price SPUB86J CVD Coating Woodworking Tungsten Carbide Button Insert
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Customized Tungsten Cemented Carbide Wear Parts for Roll Crushing
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China Round Billet Metal for High Strength Cemented Carbide Tools
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Carbide Turning Inserts & Square Carbide Inserts for Milling Tools
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Wear Resistant SPUB 63G Tool Holder Insert Carbide Cutting Inserts
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Customized Cemented Carbide Plate — Factory-Direct Blanks in Any Grade
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