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What is Tungsten ?

Tungsten is known as “wolfram” or “industrial tooth” or “industrial salt” because both of its melting point and specific gravity are much higher than other metals, while its hardness is only second to diamond. Tungsten alloy comes in two ranges – magnetic (the HE range) and non-magnetic (the HA range). With densities up to 18.5gcm, these grades are the prime choice for adding balance weights, ballast or vibration damping mass where space is limited.

The high density of tungsten alloy also delivers effective radiation shielding particularly against X-ray and gamma radiation. We also provide a specialist tungsten alloy grade (HM 490) for hot metal applications which offers good hot wear resistance. All tungsten alloy grades are reasonably corrosion resistant in both acid and alkaline environments and can easily be plated or painted if necessary. They are easy to clean, non-toxic and non-radioactive.


Application of Tungsten


useful for glass-to-metal seals since the thermal expansion is about the same as borosilicate glass
tungsten and its alloys are used extensively for filaments for electric lamps, electron and television tubes, and for metal evaporation work
electrical contact points for engine distributors
X-ray targets
windings and heating elements for electrical furnaces
missile and high-temperature applications
tungsten mesh for high-temperature applications
high-speed tool steels and many other alloys contain tungsten
the carbide is important to the metal-working, mining, and petroleum industries
calcium and magnesium tungstates are widely used in fluorescent lighting
tungsten salts are used in the chemical and tanning industries
tungsten disulfide is a dry, high-temperature lubricant, stable to 500°C
tungsten bronzes and other tungsten compounds are used in paints TV tubes (electron tubes)


Why Use Tungsten ?


Tungsten and its alloys are used in many high-temperature applications, such as arc-welding electrodes and heating elements in high-temperature furnaces. Tungsten carbide is immensely hard and is very important to the metal-working, mining and petroleum industries.

Tungsten Is Mainly Used In The Production Of Hard Materials Based On Tungsten Carbide, One Of The Hardest Carbides, With A Melting Point Of 2770 °C. Wc Is An Efficient Electrical Conductor, But W2c Is Less So. Wc Is Used To Make Wear-Resistant Abrasives, And "Carbide" Cutting Tools Such As Knives, Drills, Circular, Mining And Turning Tools Used By The Metalworking, Woodworking, Mining, Petroleum And Construction Industries. Carbide Tooling Is Actually A Ceramic/Metal Composite, Where Metallic Cobalt Acts As A Binding (Matrix) Material To Hold The Wc articles In Place. This Type Of Industrial Use Accounts For About 60% Of Current Tungsten Consumption.


Tungsten Produts


(1) Pure Tungsten and alloys

Sheet/Plate -  T(0.1-200)mm*W(50-300)*L100mm
Sheet : T(0.04-2.0)*W(50-600)*L mm
Plate : T(2.1-25)*W(30-600)*L mm
Rods - Dia (2-100)mm*L(50-2000)mm
Tubes - OD (6-200) X ID(3-180) X L(50-100) mm
Crucible - As per specification
Ball - Dia (2-100)mm
Fasteners - As per specification

(2) Tungsten Copper

Plate -  T (1-200)mm*W (5-300)mm*L300mm
Rods - Dia (10-60)*L (50-300) mm

(3) Tungsten carbide

Strips - T (2-60)mm*W(5-300)mm*L300 mm
Rods - Dia (1-100)*L (50-300) mm

Tungsten Grade

Grade - Pure tungsten, 90WNiFe/Cu 93WNiFe/Cu 95WNiFe/Cu 97WNiFe/Cu

Grades - W50/Cu50, W55/Cu45, W60/Cu40, W65/Cu35, W70/Cu30, W75/Cu25, W80/Cu20, W85/Cu15, W90/Cu10.

Grade - YG3, YG6, YG8, YW1, YW3, YW5 etc


Chemical Composition


Tungsten content Type Diameter Dia.tolerance Length L tolerance
(mm) (mm) (mm) (mm)
99.95% Sintering rod 40-100 ±3 500max ±5
Froged rod 20-80 ±2 800max ±5
Ground rod Feb-60 ±0.1 650max ±1
Other element content Fe 0.001 Al 0.0001 Bi 0.0001 Si 0.001
Ca 0.001 Ni 0.00035 Mo 0.0008 O 0.0047
P 0.001 N 0.002 Mg 0.0001 Pb 0.0001
Sn 0.0001 Sb 0.0001 C 0.0009 As 0.0001

Tungsten Alloys

Type Density (g/cm³) Tensile strength (MPa) Elongation Hardness (HRC)
85W-10.5Ni-4.5Fe 15.8-16.0 700-1000 20-33 20-30
90W-7Ni-3Fe 16.9-17.1 700-1000 20-33 24-32
90W-6Ni-4Fe 16.7-17.0 700-1000 20-33 24-32
91W-6Ni-3Fe 17.1-17.3 700-1000 15-28 25-30
92W-5Ni-3Fe 17.3-17.5 700-1000 18-28 25-30
92.5W-5Ni-2.5Fe 17.4-17.6 700-1000 25-30 25-30
93W-4Ni-3Fe 17.5-17.6 700-1000 15-25 26-30
93W-4.9Ni-2.1Fe 17.5-17.6 700-1000 15-25 26-30
93W-5Ni-2Fe 17.5-17.6 700-1000 15-25 26-30
95W-3Ni-2Fe 17.9-18.1 700-900 Aug-15 25-35
95W-3.5Ni-1.5Fe 17.9-18.1 700-900 Aug-15 25-35
96W-3Ni-1Fe 18.2-18.3 600-800 06-Oct 30-35
97W-2Ni-1Fe 18.4-18.5 600-800 Aug-14 30-35
98W-1Ni-1Fe 18.4-18.6 500-800 05-Oct 30-35
90W-6Ni-4Cu 17.0-17.2 600-800 04-Aug 25-35
93W-5Ni-2Cu 17.5-17.6 500-600 03-May 25-35

Tungsten copper

Composition Density Electrical Conductivity Hardness  Class # RWMA Group B
(by wt. ) (g/cm3 ) (% IACS) (HRB)
Tungsten: 55% 12.3 49 70 10 10.7445
Copper: balance
Tungsten: 60% 12.75 47 76    
Copper: balance
Tungsten: 65% 13.3 44 82    
Copper: balance
Tungsten:70% 13.9 42 88    
Copper: balance
Tungsten: 75% 14.5 38 94 11 11.744
Copper: balance
Tungsten: 80 15.2 34 98 12  12.74350
Copper: balance

Images


 

Tungsten crucible

 

Tungsten Plate

 

Tungsten sheet

 

 

Tungsten products

 

Tungsten bar

 

Tungsten wire



Value Addition


Cut to length:Sheets/Rods/Pipes can be supplied in full sizes or cut to length as required by the clients.

Polishing:Sheets/Rods/Pipes can be polished is required by clients. It can also be provided in mill black finish if acceptable by clients.

Threading: We can also providing external threading to the bars if required by the clients.

Fabrication: We can fabricate the materials according to the customer’s needs.

Machining:We use CNC lathe machines to produce customized designs according to the client’s needs.

Heat Treatment: To change the mechanical properties of steel pipes and make it suitable for some applications, steel pipes can also a undergo heat treatment process.

Positive Material Identification: We have an PMI machine to identify all the Steel Plates while arrival and dispatch so as the pipes match to order specifications and client requirements.

 

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With over 30 years of experience, we have built an extensive network of partners and suppliers around the world. Our profound industry knowledge and market insights allow us to navigate complexities and deliver tailored solutions to meet the diverse needs of our clients

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Address - 7 - Ground Floor, Kvd fund building, T Gharpure Marg, Girgaon, Mumbai - 400004.

E-mail info@kaizenalloys.com

Phone +91 9326618981