Tungsten Wire

Material: Pure Tungsten, Tungsten Alloy (WRe3-26)

Purity: 99%-99.999%

Custom sizes and standard sizes in stock
Quick Lead Time
Competitive Price

Tungsten Wire offers an exceptional high melting point, excellent high-temperature resistance, and good electrical conductivity. It is commonly used in electronics, lighting, vacuum technology, and arc welding. As a leading supplier and manufacturer of premium tungsten products, Heeger Materials leverages advanced machining centers to deliver high-precision tungsten and tungsten alloy wires for wide ranges of applications.

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Tungsten Wire Data Sheet

Reference:	HMWW1117
Dimensions:	Diameter: 0.01-6 mm Length: customized
Material:	Tungsten and Tungsten Alloy (WRe3-26)
Purity:	99%, 99.9%, 99.95%, 99.99%, 99.999%
Wire Type:	Round Wire, Flat Wire, or Square Wire
Product Form:	Straight, Coiled, or Spooled
Temper:	Annealed or Unannealed

Tungsten Wire

Tungsten wire is forged and drawn from high-purity tungsten rods (up to 99.999%), offering exceptional electrical conductivity, a high melting point, and low thermal expansion, making it an ideal material for electrical applications. HM provides customized solutions for diameter, length, wire type, and surface finish to meet specific requirements. We offer both Tungsten White Wire and Tungsten Black Wire, each suited for different industrial needs, ensuring optimal performance in a variety of applications.

Tungsten White Wire
Tungsten Black Wire

Tungsten Wire Material Chemical Composition

W (>%)	Chemical Content (<%)
99.999 W1	Fe	Ca	Be	Sn	Al	Ni	Zn	Sb	Pt	K	Ta	Na
	0.0001	0.00005	0.000005	0.000005	0.00005	0.00001	0.00005	0.00005	0.00003	0.000005	0.0001	0.00005
	Cr	Pb	As	Mg	Ti	Bi	Mo	Cd	Cu	Ba	Co	Mn
	0.000005	0.00001	0.00005	0.00005	0.000005	0.00001	0.00001	0.000005	0.000007	0.00001	0.000005	0.000005
99.99 W2	Fe	Ca	Be	Sn	Al	Ni	Zn	Sb	Pt	K	O	Na
	0.0001	0.00045	0.0001	0.0001	0.0001	0.0001	0.0001	0.0001	0.0001	0.0005	0.0040	0.0009
	Cr	Pb	As	Mg	Ti	Bi	Mo	Cd	Cu	Ba	Co	Mn
	0.0001	0.0001	0.0001	0.0001	0.0001	0.0001	0.0002	0.0001	0.0001	0.0001	0.0001	0.0001
99.95 W3	Fe	Ca	P	Sn	Al	Ni	N	Sb	Si	O	Pb	As
	0.005	0.003	0.001	0.0001	0.002	0.003	0.003	0.001	0.003	0.003	0.0001	0.002
	Mg	C	Bi	Mo
	0.002	0.005	0.0001	0.001

Tungsten Wire Production Process

Raw Material: Select high-purity tungsten powder.
Powder Metallurgy: Mix with binder and compact into a green billet.
Sintering: High-temperature sintering to remove the binder and increase density.
Drawing: Draw the tungsten rod through the dies to form fine wires.
Heat Treatment: Anneal to relieve stress and enhance properties.
Surface Treatment: Clean and polish the surface.
Cutting & Customization: Cut or customize according to requirements.

Tungsten Wire Processing Method

Sintering
Forging
Rotary Forging
Rolling
Polishing

Tungsten Wire Surface Finish

Depending on the intended applications, tungsten wire has two main surface finishes as follows:

Black: The surface is “as swaged” or “as drawn”, retaining a coating of processing lubricants and oxides.
Cleaned: The surface is chemically cleaned to remove all lubricants and oxides.

Tungsten Wire Cut-Resistance

Tungsten Wire, with its exceptional hardness and cut resistance, is used in cutting tools, high-temperature components, and protective gear. Compared to stainless steel, tungsten offers superior hardness and cut resistance, and compared to PE, it performs much better against sharp tools, making it ideal for high-performance applications.

Performance Comparison of Tungsten Wire, Stainless Steel Wire And PE
Items	Tungsten Wire		Stainless Steel Wire	PE
Items	Universal	High Strength Type	Stainless Steel Wire	PE
Diameter	13 – 35 um	20 – 35 um	33 – 50 um	10 – 30 um
Tensile Strength	3600 – 4000 N/mm2	4800 – 6000 N/mm2	1000 N/mm2	1000 – 1500 N/mm2
Density	19.3 g/cm3	19.3 g/cm3	7.85 g/cm3	0.91 g/cm3
Vickers Hardness	800 – 850 HV	950 – 1000 HV	≤ 210 HV	50 – 70 HV
Pulling Force	1% – 3%	1% – 3%	40% – 60%	10% – 50%
Cut Resistance (A1-A9)	A5 – A9	A5 – A9	A3 – A4	A2 – A3
Flexibility (1-10)	9	8	5	10

Tungsten Wire Applications

Electronic Devices: Tungsten filaments are widely used to manufacture electronic components, including electron tubes, television picture tubes, semiconductor devices, and vacuum tubes. Their high melting point and excellent electrical conductivity make them essential in these applications.
Lighting: Tungsten filaments are commonly found in incandescent and halogen bulbs due to their ability to withstand high temperatures and provide consistent illumination.
Resistance Heating: Tungsten filaments are used in heating elements for electric stoves, ovens, and furnaces, thanks to their superior high-temperature stability.
Vacuum Technology: Tungsten filaments serve as heating elements and electrodes in vacuum equipment, including electron microscopes, due to their durability and performance in low-pressure environments.
Welding and Cutting: Tungsten filaments are key materials for electrodes in welding and cutting processes, such as TIG welding and laser cutting, because of their resistance to high temperatures and arc corrosion.
Medical Equipment: Tungsten filaments are also utilized in medical devices, including X-ray tubes and imaging equipment, where their durability and performance are critical.

Tungsten Wire Packaging

The Tungsten Wire is carefully placed in wooden cases or cartons with additional support from soft materials to prevent any shifting during transportation. This packaging method guarantees the integrity of the products throughout the delivery process.

Tungsten Properties

Item	Value
Atomic number	74
Crystal structure	Body centred cubic
Electronic structure	Xe 4f¹⁴ 5d⁴ 6s²
Valences shown	2,3,4,5,6
Atomic weight( amu )	183.85
Thermal neutron absorption cross-section( Barns )	18.5
Photo-electric work function( eV )	4.55
Natural isotope distribution( Mass No./% )	183/ 14.3
Natural isotope distribution( Mass No./% )	182/ 26.3
Natural isotope distribution( Mass No./% )	186/ 28.6
Natural isotope distribution( Mass No./% )	180/ 0.1
Natural isotope distribution( Mass No./% )	184/ 30.7
Atomic radius – Goldschmidt( nm )	0.141
Ionisation potential( No./eV )	1/ 7.98
Ionisation potential( No./eV )	2/ 17.7

Item	Value
Material condition	Annealed (Soft)
Material condition	Un-annealed (Hard)
Poisson’s ratio	0.28
Poisson’s ratio	0.28
Bulk modulus( GPa )	311
Bulk modulus( GPa )	311
Tensile modulus( GPa )	411
Tensile modulus( GPa )	411
Hardness – Vickers( kgf mm⁻² )	360
Hardness – Vickers( kgf mm⁻² )	500
Tensile strength( MPa )	550-620
Tensile strength( MPa )	1920
Yield strength( MPa )	550

Item	Value
Electrical resistivity( µOhmcm )	5.4@20@20°C
Superconductivity critical temperature( K )	0.0154
Temperature coefficient( K⁻¹ )	0.0048@0-100°C
Thermal emf against Pt (cold 0C – hot 100C)( mV )	1.12

Item	Value
Boiling point( °C )	5660
Density( gcm⁻³ )	19.3@20°C

Item	Value
Melting point( °C )	3410
Latent heat of evaporation( J g⁻¹ )	4009
Latent heat of fusion( J g⁻¹ )	192
Specific heat( J K⁻¹ kg⁻¹ )	133@25°C
Thermal conductivity( W m⁻¹ K⁻¹ )	173@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	4.5@0-100°C

Download

SAFETY DATA SHEET (SDS) – Tungsten Metal

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We will check and get back to you in 24 hours.

To customize your tungsten wire please provide the following details:

Diameter (for the wire)
Length (Indicate the length you need)
Purity (Specify the purity of material required.)
Form (Straight, coiled, or spooled)
Surface Finish (polished, rough, oxide-coated, etc.)
Quantity of the products you need
Alternatively, you can provide a drawing with your specifications.

Once we have these details, we can provide you with a quote within 24 hours.

We carry a wide variety of tantalum and tantalum alloy products in stock, and for these, there is generally no minimum order requirement. However, for custom orders, we typically set a minimum order value of $200. The lead time for stock items is usually 1-2 weeks, while custom orders usually take 3-4 weeks, depending on the specifics of the order.

DFARS (Defense Federal Acquisition Regulation Supplement) compliance is primarily concerned with the sourcing of materials for defense-related applications in the United States. According to DFARS, certain materials used in defense must be sourced from the United States or qualifying countries.

If you have specific tungsten materials that are subject to DFARS, please let us know in advance and we will confirm.

At Heeger Materials Inc., we take this responsibility seriously. We adhere to all applicable laws and regulations, including Section 1502 of the Dodd-Frank Act. Our company operates with a strict code of ethics and is committed to only partnering with suppliers who share our dedication to responsible sourcing. We support the initiatives and programs aimed at promoting “conflict-free” supply chains and work diligently to ensure that our products meet these standards.

Heeger Materials Inc., established in 2016 in Colorado, USA, is a specialized supplier and manufacturer of tungsten and tungsten alloys. With extensive expertise in supply and export, we offer competitive pricing and customized solutions tailored to specific requirements, ensuring outstanding quality and customer satisfaction. As a professional provider of refractory metals, specialty alloys, spherical powders, and various advanced materials, we serve the research, development, and large-scale industrial production needs of the scientific and industrial sectors.

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