2012-05-29

Tungsten Alloy Advantages


There are some main properties for tungsten heavy alloy as follows:
-High Density: high density between 16.5 and 18.6 g/cc with tungsten content from 80%W to 97%W.
-High Melting Point: the highest melting point as 3,422 C, 6,192 F and the highest tensile strength. -Excellent Hardness: almost from 24 HRC to 36 HRC, or even above 40 HRC through swaging.
- Superior Wearing Resistance: excellent wearing resistance in high concentrations of CO2H2SCl- corrosion environments.
-High Ultimate Tensile Strength: excellent properties almost for products used in military or other high-tech filed.
-High Temperature Resistance: optimum parameters had been obtained as bonding temperature 1403K, bonding time 50min, bonding pressure 7.5MPa and cooling velocity 5K/min
-Non-toxic and Environmental Friendly: compared with lead, tungsten heavy alloy is an ideal, environmentally friendly, and is of non-toxic.
-Good Corrosion Resistance: corrosion resistance sulfur jar mandrel; stuffing box and other productswhose corrosion-resistant and wear-resistance have reached the international advanced level.
-Well Machinability: relatively easy to machine, and can be plated or painted to enhance their corrosion protection.
-High Radiation Adsorption Capability: At the same weights high density alloy can provide the same energy absorption as lead using 1/3 less material.
-High Impact Resistance and Crack Resistance: It is defined as the amount of energy per volume that a material can absorb before rupturing.

2012-05-28

Tungsten Alloy Bar

Tungsten alloy bar is consist of 85-99% tungsten with balanced commonly nickel and iron or copper. The alloys are made by liquid-phase sintering to give a structure consisting of almost pure tungsten particles in a matrix of the alloy elements. Tungsten heavy alloy, with densities between 15.8 and 18.75 g/cm3, represent the heaviest materials generally available to the engineer. It has excellent radiation resistance, thermal and electric conductivities, corrosion resistance and machinable.


Applications for Tungsten Alloy

    Radiation shield, collimator, nuclear shielding, beamstop, PET syringe shield, vial shield, isotope container, FDG container, multi leaf collimator;
    Balanced part; tungsten sinker bar, heavy metal boring bar, tuyacht, sailboat, submarine and other vessels crank camshafts, holders for Well Logging, Racing Weights. vibration damping and dynamic balancing. Tungsten sinker bar, Tungsten bucking bar, Tungsten boring bar, Tungsten Sinkers, tungsten alloy counterweights for golf and tungsten alloy dart parts spheres, cubes, and projectile shapes;
    High-temperature die, Electroheat , brass and copper, Tooling for low-pressure die-casting of aluminum and brass, Hot upsetting dies, Filler rods for die repair, upsetting anvil block, electrical rivet;
    Shrapnel head; Penetrators;
    Electrical contact;
    Balanced ball for missile and plane; golf and tungsten alloy dart parts spheres, cubes, and projectile shapes;
    Core for armor piercing bullet measurement.

As you can see, tungsten alloy mateial is used in so many fields, for more details, you could go tungsten alloy application.

Tungsten Alloy Sheet

Tungsten alloy sheet is widely used in radiation shields, packaging materials, cable, shipbuilding, electro-vacuum industries, metallurgical machinery and electronics. Choose the best material, all will tested by our quality department, and before loading, we will test all, in order to supply you the best products.


Tungsten Alloy Extrusion Die Advantages

Hard steel wire is generally made by forcing solid metal through a hole, called a die, under such intense pressure that it is extruded like pasta.
However, can you imagine the incredible forces that must be acting on the holes? In some cases diamond or sapphire (nearly as hard) dies are used, but this one is made of a tungsten alloy, probably because of its high strength even at very high temperatures.
On account of its prosperities of high heat resistance, good hardness, excellent plasticity ability, tungsten heavy alloy (WHA) is quite suitable material for tolls such as extrusion dies, die casting components, etc., especially when it is employed in extrusion die of copper related alloy, the manufacture of aluminum, zinc and brass castings. Extrusion dies are made from a sintered material consisting of Mo and/or W containing 2-60% by volume of high melting point non-metallic components which are free from oxygen (except possibly in impurity amounts).





Tungsten Alloy Tube

Tungsten alloy tube has high melting temperature, high strength, good thermal conductivity and spalling resistance. It can be used as the parts of electron tubes and the heating elements of the high temperature furnace.
It is also mainly used for high temperature furnace components, crucible, missile rockets nozzle high temperature furnace, etc.

Why Use Tungsten Alloy for Hunting Shot?

High density, great hardness and resistance to high temperature make tungsten to be one of the most sought-after materials for shotgun pellets in shooting history. The density of tungsten alloy is about 18g/cm3, only gold, platinum, and a few other rare metals have a similar density. So it is denser than any other shot material, including lead, steel or bismuth. To understand how the density factors into performance, let’s look at two spheres about the same size, a golf ball and a ping-pong ball. The golf ball is far denser and will fly farther and hit harder. Now reduce that size down to two single No. 4 pellets, one steel and the other a tungsten alloy. Get the picture? The tungsten will fly farther, hit harder and penetrate deeper. That means more birds, farther out, with fewer cripples. Another unique property of tungsten is that it is non-toxic, it is friendly to the environment, so tungsten alloy hunting shot is safe for people to handle and work with.


Tungsten Alloy Counterweight

Tungsten alloy Counterweight is also called balance weight, which is used in applications such as yacht, sailboat, submarine and other vessels crank camshafts, holders for Well Logging, Racing Weights, vibration damping and dynamic balancing.


Tungsten Alloy Hunting Shot

Tungsten alloy shot is used as the shot of shotgun, hunting sphere. A shotgun is a firearm that is usually designed to be fired from the shoulder. The shot pellets from a shotgun spread upon leaving the barrel, and the power of the burning charge is divided among the pellets, which means that the energy of any one ball of shot is fairly low.


Tungsten Alloy Plate

Here is one company Chinatungsten could offer tungsten alloy plate as follows:

width×Length: (2.0-250.0mm)×(2.0-250.0mm)
thickness: 2mm-15mm
Density: 15.8-18.75 g/cm3
Composition: W content: 85-99%, W-Ni-Fe, W-Ni-Cu
Surface: Sintering surface, Forged surface, Ground surface


Tungsten Alloy Crankshaft

The crankshaft, sometimes casually abbreviated to crank, is the part of an engine which translates reciprocating linear piston motion into rotation. Tungsten Alloy is suitable material for crankshaft.


Tungsten Alloy Rod

We know there is one company Chinatungsten could offer tungsten alloy rod in sifferent size,. Here is the infomration:

Diameter: 2.0-100.0mm
Length: 50-1000mm
Density: 16.5-18.75 g/cm3
Composition: W content: 85-99%, W-Ni-Fe, W-Ni-Cu
Surface: Sintering surface, Forged surface, Ground surface

You could visit tungsten alloy rod for more details.

Tungsten Alloy Block/Brick

As we know, tungsten alloy block/brick could be manufactured as the parts of military defense, extrusion die, some counterweights, such as yacht counterweights, vehicle counterweights, airplane counterweights, helicopter counterweights, boat counterweights, tank counterweights, etc.


Tungsten Alloy Gamma Radiation Shielding

Tungsten alloy radiation shielding for gamma is widely used in medical field,here is a pic for that:

I know there is one company could offer that kind of medical shielding, there are some many kinds of shielding, you could visit http://www.tungsten-alloy.com/radiotherapy-radiation.htm for more details.

2012-05-22

Tungsten Copper Standard--RWMA

Here is a standard for tungsetn copper for your reference:

RWMA  CLASS 10 = 70% Tungsten – 32% Copper
•    Electrical Conductivity 47-52
•     Hardness Rockwell B 88-95
•     Density 13.93 grams/cc
RWMA CLASS 11 = 75% Tungsten – 25% Copper
•    Electrical Conductivity 42-50
•    Hardness Rockwell B 88-95
•    14.80 Density grams/cc
RWMA CLASS 12 = 80% Tungsten – 20% Copper
•    Electrical Conductivity 41-49
•    Hardness Rockwell B 99-104
•    15.60 Density grams/cc




For more details, you could find tungsten copper standard.

Tungsten Alloy Grade-ASTM B 777-99

Here is the details for ASTM B 777-99:

ASTM B 777-99

Class
1
2
3
4
Tungsten Nominal %
90
92.5
95
97
Density (g/cc)
16.85-17.25
17.15-17.85
17.75-18.35
18.25-18.85
Hardness (HRC) Max
32
33
34
35
Ultimate Tensile Strength
ksi
110
110
105
100
Mpa
758
758
724
689
Yield Strength at 0.2% off-set
ksi
75
75
75
75
Mpa
517
517
517
517
Elongation, %
5
5
3
2

For more details, you could visit tungsten grade ASTM B 777-99.

Tungsten Alloy Grade--Mil-T-21014

With the special properties, tungsten alloy material could be used in military, which is usually made as per the standard of Mil-T-21014, i would like to share the details as follows:

Mil-T-21014

Grade
Mil-T-21014
Class1
Class 1
Class 2
Class 3
Class 3
Class 4
Composition
90%W,
6%Ni4%Cu
90%W,
7%Ni3%Fe
92.5%W,
5.25%Ni
2.25%Fe
95%W,
3.5%Ni
1.5% Cu
95%W,
3.5%Ni
1.5%Fe
97%W,
2.1%Ni
0.9%Fe
Density (gm/cc;lbs/in3)
17;0.614
17;0.614
17.5;0.632
18;0.65
18;0.65
18.5;0.668
Hardness (RC)
24
25
26
27
27
28
Ultimate Tensile Strength (PSI)
110,000
120,000
114,000
110,000
120,000
123,000
Yield Strength, .2% Offset (PSI)
80,000
88,000
84,000
85,000
90,000
85,000
Elongation (% in 1″)
6
10
7
7
7
5
Proportional Elastic Limit (PSI)
45,000
52,000
46,000
45,000
44,000
45,000
Magnetic Properties
Nil
Slightly
Magnetic
Slightly
Magnetic
Nil
Slightly
Magnetic
Slightly
Magnetic
ASTM-B-459-67
Grade1
Type &&
Grade1
Type &&
Grade2
Type &&
Grade3
Type &&
Grade3
Type &&
Grade4
Type &&

For more information, you could learn from tungsten alloy grade--Mil-T-21014.

Tungsten Alloy Grade--Anviloy

Tungsten alloy material becomes more and more popular as the counterpart to Anviloy, as Anviloy is one of patent products from one of an America company. Here is a table for collecting the properties we sould know:

Anviloy

Products
Normal Composition
Density
(g/cm3)
UTS
(N/mm2)
Hardness (HRC)
Applications
Anviloy 1150
90%W4Mo4Ni2Fe
17.25
965
34
 
Anviloy 4200
93%WNiFeMo
17.8
885
30
Extrusion Dies
Anviloy 4000
90%WNiFeMo
17.3
960
32
Die Casting Tools, Extrusion Tools
Anviloy 4100
86%WNiFeMo
16.7
1075
36
Die Casting Tools

You could find more by click tungsten alloy &Anviloy.