Tungsten Heavy Metal Alloy

Material Data Sheet (MDS)

Tungsten heavy metal alloys are suited for heavy-duty applications and offer outstanding resistance to corrosion, excellent formability, and machinability. We have an extensive inventory of tungsten alloys available in standard sizes. Please refer to the chart below to help determine the correct amount of metal alloy to order.

If you have any questions concerning the properties of our tungsten alloys or if a non-magnetic metal is required for your application, contact Rembar. The compositions shown below are typical and may change for manufacturing purposes according to the size and shape of the part.

Rembar	W H M A 17	W H M A 17Fe	W H M A 17D	W H M A 17.5	W H M A 17.7	W H M A 18	W H M A 18Fe	W H M A 18.5
Element Properties	W 90% Ni 6% Cu 4%	W 90% Ni 6% Cu 2% Fe 2%	W 90% Ni 7% Fe 3%	W 92.5% Ni 5.25% Fe 2.25%	W 93% (Balance) Ni,Fe,Mo	W 95% Ni 3.5% Cu 1.5%	W 95% Ni 3.5% Fe 1.5%	W 97% Ni 2.1% Fe .9%
ASTM-B-777	Class 1	Class 1	Class 1	Class 2	N/A	Class 3	Class 3	Class 4
Density Gms/cc	17	17	17	17.5	17.7	18	18	18.5
Density Lbs/ci. In.	.614	.614	.614	.632	.639	.650	.650	.668
Hardness Rockwell C	24	24	25	26	30	27	27	28
Ultimate Tensile Strength (PSI)	110K	110K	125K	114K	130K	115K	125K	128K
Yield strength .2% offset (PSI)	90K	90K	88K	90K	90K	85K	90K	85K
Elongation (% in 1")	8	8	14	12	10	7	12	10
Proportional Elastic Limit (PSI)	45K	45K	52K	46K	60K	45K	44K	45K
Modulus of Elasticity (PSI)	40 X 10⁶	40 X 10⁶	45 X 10⁶	47 X 10⁶	53 X 10⁶	45 X 10⁶	50 X 10⁶	53 X 10⁶
Coefficient of Thermal Expansion X 10-6/°C	5.4	5.4	4.8	4.6	4.5	4.4	4.6	4.5
Thermal Conductivity (CGS Units	.23	.23	.18	.20	.27	.33	.26	.30
Electrical Conductivity (% IACS)	14	14	10	13	14	16	13	17
Magnetic Properties	None	Slightly Magnetic	Slightly Magnetic	Slightly Magnetic	Slightly Magnetic	None	Slightly Magnetic	Slightly Magnetic

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Need additional technical information?

Stop by our Refractory Metal Technical Data page for details on molybdenum, tungsten, and tantalum, including chemical reactivity, comparative machinability ratings, radiant shield data, melting points, densities, thermal expansion, and other critical properties.

Visit our Material Safety Data Sheet (SDS) page for important safety information regarding molybdenum, tungsten, tantalum, and niobium, including fire hazard data, spill or leak procedures, and special protection information.

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For more than 60 years, Rembar has maintained an extensive inventory of refractory metals and alloys to supply aerospace, military, semiconductor, glass, chemical processing, and medical equipment manufacturers, among several other industries.

From prototypes to finished designs to quality assurance, our expert engineers can partner with your team to bring your manufacturing vision to reality in the shortest time possible while maintaining the highest levels of quality.

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