Stainless, Nickel Alloys, Forgings & Tungsten Alloys

The Falcon Metals Group

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Stainless Steel

Nickel Iron Alloy

Tungsten Alloys

Tungsten

SPECIFICATIONS

TYPE	BAR/WIRE	SHEET/STRIP	PLATE	TUBE	PIPE	FORGINGS
TUNGSTEN	AMS-7897	AMS-7898	AMS-7898			AMS-7897

	90%W 6% NI 4%Cu	90%W 7% NI 3.0% 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
AMS T 21014D	Class I	Class 1	Class 2		Chip Resistant	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	0.888
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)	40x10	45x10₆	47x10₆		53x10₆	45x10₆	5OxiO₆	53x10₆
Coefficient of Thermal Expansion x 10-61C (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 (%IACS)	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.

*Typical composition. Composition can be changed as required.

Properties may vary according to size and shape.

If non-magnetic material is required, it must be specified at time of order.

MACHINING & FINISHING HIGH-DENSITY TUNGSTEN BASED METALS

Machining is similar to machining gray cast iron. Coolants are optional, but carbide tools are recommended in most cases.

TURNING & BORING: Roughing-use C-2 Carbide with cutting depth of .030”-to .1 25 and .006” - .015 feed, at 200 to 300 SFM. Finishing- .010 to .015 cutting depth and .004-.010 feed at 250-400 SFM.

DRILLNG: 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.

TAPPING: Use High-speed or carbide, two flute plug spiral point taps. Use chlorinated oil or taping compound is recommended.

GRINDING: Use aluminum oxide or silicon carbide wheels of medium hardness.

SAWING - Cutting: 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.

MILLING: 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.

New Alloy

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 Available for Tungsten Alloys:

“State of the art” machine shop can produce to near net/net, and finished parts as per your drawings.

39 Hewson Ave.
Waldwick, NJ 07463

USA

800-631-0728
NJ: 201-670-8300
CANADA: 800-544-5501
Fax: 201-670-0033