Tungsten Alloy

Specializing in High Quality Heavy Metal Alloys

Tungsten heavy alloys are ideal for high density applications or for use in radiation shielding. Heavy metal tungsten alloys are 90% to 97% pure tungsten in a matrix of nickel and copper or nickel and iron. The addition of these alloying elements improves both the ductility and machinability of these alloys over non-alloyed tungsten.

We stock alloy as:

Most stock items are shipped the same day!

Custom Alloy Machined Parts

MTS can custom machine any alloys to finished parts according to your specifications. We carry an extensive inventory of tungsten alloys and provide quick turnaround for those items not in stock. Call (1-800-626-0226) or send us a message for more information or with a specific request.

We also manufacture aircraft bucking bars and ballast weights for aircraft, high performance autos, and sailboats made of tungsten alloy.

In addition to the below alloys, we also offer tungsten copper, MT-17D Tungsten DieAlloy (90WNiMoFe) for die casting, MT-17BB (90W 6Ni 4Fe+Cu), as well as other custom alloys. Don’t see what you’re looking for? Please ask for a quote!

Name MT-17C MT-17F MT-175 MT-18C MT-18F MT-185
Material 90% W
6% Ni
4% Cu
90% W
7% Ni
3% 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, grams/cubic centimeter  17 gm/cc  17 gm/cc  17.5 gm/cc  18 gm/cc  18 gm/cc  18.5 gm/cc
Density; lbs/in3 0.614 0.614 0.632 0.65 0.65 0.668
Mil. Spec. T-21014 D Class 1 Class 1 Class 2 Class 3 Class 3 Class 4
ASTM-B777 Grade 1 Grade 1 Grade 2 Grade 3 Grade 3 Grade 4
Type Type II & III Type II & III Type II & III Type II & III Type II & III Type II & III
AMS 7725E Class 1 Type 1 Class 1 Type 2 Class 2 Type 2 Class 3 Type 1 Class 3 Type 2 Class 4 Type 2
Hardness; Rockwell C 24 25 26 27 27 28
Ultimate Tensile Strength; PSI ≥94,000 ≥110,000 ≥110,000 ≥94,000 ≥105,000 ≥100,000
Yield Strength, .2% Offset; PSI ≥75,000 ≥75,000 ≥75,000 ≥75,000 ≥75,000 ≥75,000
Elongation, % in 1″ ≥2 ≥5 ≥5 ≥2 ≥3 ≥2
Proportional Elastic Limit; PSI 45,000 52,000 46,000 45,000 44,000 45,000
Modulus of Elasticity; PSI 40 x 10E6 45 x 10E6 47 x 10E6 45 x 10E6 50 x 10E6 53 x 10E6
Coefficient of Thermal Expansion x 10E-6/°C (20°- 400°C) 5.4 4.8 4.6 4.4 4.6 4.5
Thermal Conductivity; CGS Units 0.23 0.18 0.2 0.33 0.26 0.3
Electrical Conductivity; %IACS 14 10 13 16 13 17
Magnetic Properties NIL Slightly Magnetic Slightly Magnetic NIL Slightly Magnetic Slightly Magnetic

Request a Quote

Use the request a quote form on this page or place orders by phone, 1-800-626-0226.

Questions?

Feel free to send us a message, with technical or application questions.

We look forward to the opportunity to assist you!