Distributors of Specialty Metals since 1959
We can supply saw cutting, plasma cutting, shearing and slitting. The forms that are available for each grade of material is listed on our Tungsten Alloys stock list.
Charts best viewed on desktop
90%W *6% NI 4%Cu 90%W 7% NI 3.% Fe 92.5%W 5.25% Ni 2.25 Fe 93%W Balance NI Fe Mo 95%W 3.5% Ni 1.5%Cu 95%W 3.5% Ni 1.5%Fe 97%W 2.1% Ni .9%Fe MIL-T 21014D Class 1 Class 1 Class 2 *Chip Class 3 Class 3 Class 4 SAE AMS 7725B5 7725B ASTM-B-777-87 Class 1 Class 1 Class 2 Class 3 Class 3 Class 4 Density Gms/cc 17 17 17.5 17.7 18 18 18.5 Density Lbs/Cu. In 0.614 0.614 0.632 0.639 0.65 0.65 0.688 Hardness Rc 24 25 26 32 27 27 28 UTS (Psi) 110,000 120,000 114,000 125,000 110,000 120,000 123,000 Yield .2% Offset (Psi) 80,000 88,000 84,000 95,000 85,000 90,000 85,000 Elongation-% in 1” 6 10 7 4 7 7 5 Proportional Elastic Limit (psi) 45,000 52,000 46,000 60,000 45,000 44,000 45,000 Modulus/Elasticity (Psi) 40×106 45×106 47×106 53×106 45×106 50×106 53×106 Coefficient of Thermal Expansion x 10-6/C (20400C) 5.4 4.61 4.62 4.5 4.43 4.6 4.5 Thermal Cond (CGS) 0.23 0.18 .2 0.27 0.33 0.26 0.3 Elec Conductivity 14 10 13 14 16 13 17 Magnetic Properties Nil Slightly Slightly Slightly Nil Slightly Slightly These alloys are used where high density, strength and machinability are required. All Falcons’ Tungsten products are produced to ISO 9002 and AS 9000. Properties may vary according to size and shape. If non-magnetic material is required, it must be specified at time of order.Tungsten Alloys (High Density) Typical Properties and Characteristics
Tungsten Alloys (High Density) Typical Properties and Characteristics
Resistant
(%IACS)
*Typical composition. Composition can be changed as required.
TYPE BAR/WIRE SHEET/STRIP PLATE TUNGSTEN AMS-7897 AMS-7898 AMS-7898Specifications
Specifications
Chip Resistant Tungsten: 93% W Bal. Ni, Fe & Mo.
This alloy replaces Tungsten Carbide in most boring & grinding operations.
Available forms in stock: – Round Bar, Flat Bar, Square Bar, Sheet & Wire
Also available: Commercially Pure Tungsten, Copper Tungsten & Silver Tungsten
Machining is similar to machining gray cast iron. Coolants are optional, but carbide tools are recommended in most cases.
Roughing-use C-2 Carbide with cutting depth of .030” to .125 and .008” – .015 feed, at 200 to 300 SFM. Finishing – .010 to .015 cutting depth and .004-.010 feed at 250-400 SFM.
Use high speed steel surface treated drills with plain points. Increased clearance angles and automatic feeds are often used to avoid binding and seizing. Carbide drills will give better tool life. Chlorinated oil is sometimes used as a coolant.
Use High-speed or carbide, two flute plug spiral point taps. Use chlorinated oil or taping compound is recommended.
Use aluminum oxide or silicon carbide wheels of medium hardness.
When sawing, use a bi-metal coarse blade at high speeds, or a high-speed coarse blade at low speed. Coolant can be used. Material can be cut using high-speed cutoff wheels.
Use M-2 high-speed steel for light cuts and M-42 high-speed steel for deep cuts. Carbide cutter inserts will extend tool life. We recommend when using carbide, feeds of .007-.01 5 per tooth at speeds of 200-400 SFM for roughing, and when finished, feeds of .003-.01 0” per tooth 300-700 SFM. Our high-density tungsten alloys are not heat treatable; however, stress relieving is sometimes done on machined parts. We suggest heating 600F in air for 2 hours and air cool in air or heating in a protective atmosphere at 900F for 30 minutes.
The material’s characteristics and its low thermal expansion allow very close tolerances and fine finishes.
“State of the art” machine shop can produce to near net/net, and finished parts as per your drawings.
CHEMICAL COMPOSITION % |
||||||
|
C |
MN |
S |
SI |
NI |
FE |
CU |
|
.015 |
.15 MAX |
.010 |
.35 |
99 MIN |
.40 MAX |
.25 MAX |
REPRESENTATIVE MECHANICAL PROPERTIES, ANNEALED CONDITION, PSI |
||||
|
TENSILE |
YIELD |
ELONGATION |
HARDNESS |
|
|
55,000 |
15,000 |
40 |
90-120 BHN |
|
SPECIFICATIONS |
|||||
|
BAR: |
PLATE: |
SHEET/STRIP: |
FORGING: |
TUBE/PIPE: |
|
1-800-631-0728
NJ: 201-670-8300
CANADA: 800-544-5501
Fax: 201-670-0033
Falcon has gathered the information contained in this web site from many different printed sources. The characteristics, applications and other information contained are given as a guide. The reader must make their own evaluation based on their own research and more specific information than that supplied by Falcon. Falcon Stainless & Alloys Corp. and Falcon Div., are resellers and processors of these materials and makes no guarantees or warranties, either expressed or implied, regarding the accuracy of the information supplied or the suitability of any material for any application.