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:
- rod
- bar
- plate
- sheet
Most stock items are shipped the same day!
Purchase Tungsten Alloy Online
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!
