Product Overview
Molybdenum wire is manufactured from molybdenum metal through thermal processing, cold drawing, and surface treatment, producing fine metal filaments with diameters ranging from 0.02 mm to 12 mm. It is widely used in high-temperature and precision applications including EDM electrode wire, heating elements, filaments, and lead wires.
Chemical Properties
Acid/Alkali Resistance: Corrosion rate <0.001 mm·yr⁻¹ in 10% HCl or 5% NaOH solutions, essentially non-reactive
High-Temperature Oxidation: Begins oxidizing above 400°C with significant rate increase above 800°C; stable in vacuum or inert atmospheres (Ar, He) up to 2000°C
Seawater Environment: Superior pitting resistance compared to 316L stainless steel, suitable for marine engineering
Alloy Enhancement: Addition of rare earth (La₂O₃) or rhenium (Re) forms protective oxide layers, further inhibiting high-temperature oxidation
Mechanical Properties (Typical Values)
|
Parameter |
Typical Range |
|
Tensile Strength (UTS) |
700-1200 MPa (Pure Mo) |
|
Elongation |
2%-5% (Standard) |
|
Yield Strength |
400-600 MPa (Non-annealed) |
|
Hardness |
~HB 1500-1800 (Annealed molybdenum wire) |
|
Elastic Modulus |
2.79×10⁵-2.94×10⁵ MPa (φ0.5-1.0 mm) |
|
Thermal Expansion Coefficient |
5.3×10⁻⁶ K⁻¹ (0-20°C) |
Diameter-Strength Relationship (GB/T 4182-2017):
30 < d ≤ 130 µm → TS ≥ 2100 MPa
130 < d ≤ 190 µm → TS ≥ 1900 MPa
190 < d < 350 µm → TS ≥ 1600 MPa
Alloy Enhancement: Mo-La ≈1500 MPa+, Mo-Re >2000 MPa, maintaining high-temperature strength above 1000°C
Manufacturing Process
Raw Materials: High-purity molybdenum powder (≥99.95%), with optional rare earth oxides or metal alloying elements
Forming: Powder metallurgy → Hot extrusion → Multi-pass cold drawing → Surface treatment (black or cleaned molybdenum)
Heat Treatment: Vacuum or hydrogen annealing (800-1200°C) to eliminate internal stress and enhance toughness
Quality Control:
Tensile strength and elongation (universal testing machine)
Surface roughness Ra ≤0.015 µm
Diameter and ovality (laser diameter gauge)
High-temperature oxidation/corrosion testing (10% HCl, argon protection)
Applications
|
Industry/Field |
Typical Applications |
Key Requirements |
|
EDM (Wire Cutting) |
Fast-moving electrode wire, micro-cutting |
High tensile strength, low breakage rate, surface smoothness |
|
Electronics & Lighting |
Bulb support wires, halogen lamps, X-ray tube leads |
High melting point, good electrical/thermal conductivity, high-temperature oxidation resistance |
|
High-Temperature Heating |
Vacuum furnace heating elements, support rods |
Melting point ≈2620°C, low vapor pressure, creep resistance |
|
Aerospace |
Engine nozzles, structural supports |
High strength, low thermal expansion coefficient, non-magnetic |
|
Medical/Biological |
Trace element supplements, minimally invasive guide wires |
High purity, good biocompatibility |
|
Other Applications |
Vacuum coating, spraying, metal deposition, NMR shielding |
Corrosion resistance, chemical inertness, non-magnetic properties |
Advantages of Molybdenum Wire
Extremely High Melting Point (≈2620°C), resistant to melting in high-temperature discharge or heat treatment environments
Excellent Electrical & Thermal Conductivity (≈18-20 MS·m⁻¹), ensuring discharge efficiency and uniform heating
High Tensile Strength ranging from 700-2300 MPa depending on diameter and alloying, significantly superior to traditional electrode materials like brass and copper
Low Thermal Expansion Coefficient (≈5.3×10⁻⁶ K⁻¹), minimal dimensional changes during thermal cycling for improved processing accuracy
Corrosion Resistance & Chemical Inertness: Virtually non-corrosive in non-oxidizing acids, alkalis, and most organic solvents; superior seawater pitting resistance compared to standard steels
Non-Magnetic Properties, suitable for MRI and aerospace electronics applications sensitive to magnetic fields
Alloying Capability (Mo-La, Mo-Re, Mo-Cu) for enhanced high-temperature strength, ductility, and creep resistance
Selection & Usage Guidelines
|
Requirement |
Recommended Specification/Alloy |
Key Performance |
|
High-Precision EDM (Micro-holes, Thin Walls) |
Ultra-fine molybdenum wire φ0.05-0.12 mm (Mo-La) |
Tensile strength ≥2000 MPa, elongation ≥12% |
|
High-Temperature Heating Elements (1500-2000°C) |
Pure Mo or Mo-Cu φ0.3-1.0 mm |
Tensile strength 800-1500 MPa, low thermal expansion |
|
Aerospace Structural Components |
Mo-Re φ0.2-0.5 mm |
Tensile strength ≥2500 MPa, creep resistance |
|
Medical Guide Wires |
High-purity molybdenum φ0.02-0.05 mm (non-alloyed) |
High purity ≥99.95%, good biocompatibility |
FAQ:
Do you provide samples?
A: Yes, we offer complimentary samples with shipping arranged by the customer. We recommend testing samples or placing trial orders before larger purchases.
Q: How competitive are your prices?
A: Our pricing reflects exceptional value when considering the premium quality and comprehensive service we provide.
Q: What is your quotation turnaround time?
A: Typically 24 hours after inquiry receipt. Urgent requests receive priority handling upon notification.
Q: How do I request custom products?
A: Please share your drawings, images, or samples. We will confirm specifications and promptly initiate production.
Contact:
About STRX Titanium – Why Choose Us?
Premium Materials：We select premium raw materials to ensure quality control from the source.
Rigorous Quality Inspection：Strict quality inspection standards are implemented to ensure 100% compliance with customer requirements.
Customized Solutions：We understand that each industry has unique needs. Our team works closely with clients to tailor products based on specific requirements. We customize all titanium products (color/size, etc.) according to customer drawings or ideas.
Fast Delivery：Advanced production management ensures efficient and prompt delivery from production to shipment.
Expert Support：Gain insights from our dedicated expert team, who provide professional advice and practical assistance. STRX Titanium helps you identify and select the best solutions tailored to your business needs, ensuring optimal results and satisfaction.
STRX Titanium has earned consistent praise from clients for high-quality products and competitive pricing. With strict quality control and professional technical support, we look forward to cooperating with you!
In Summary,STRX Titanium is a leading manufacturer and supplier of titanium products in China. We maintain strong technical partnerships with major domestic and international equipment manufacturers and uphold rigorous quality standards to meet client demands.
If you are looking for a reliable titanium product supplier, please contact us immediately to learn more about our products and services.
Email: info@strx-titanium.com
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