
K1850 Tungsten Heavy Alloy
At Elmet Technologies, we produce K1850 Tungsten Heavy Alloy, renowned for its high density and outstanding mechanical properties. This advanced material is ideal for applications where maximum weight and minimal space are essential. Our K1850 is manufactured at our ISO-certified facility in Euclid, Ohio, utilizing advanced powder metallurgy techniques and stringent quality control systems. We are committed to ensuring every component meets the highest standards for performance and reliability.

We manufacture our K1850 tungsten heavy alloy with a 97% tungsten content, balanced with carefully selected nickel and iron binders. Its advanced composition delivers unparalleled density, exceeding steel and lead, while maintaining superior mechanical strength and structural integrity. K1850 is optimized for high-performance applications in aerospace, defense, and medical industries, where maximizing mass within limited space is critical. Designed for extreme environments, it ensures consistent performance, exceptional durability, and reliable machinability.
Typical Properties of K1850
| Alloy Description | K1850 | ET97 | |
| Tungsten Content | % | 97 |
| Density | (g/cm³) | 18.5 |
| (lb/in³) | 0.67 | |
| Hardness | (Rc) | ≤ 35 |
| Ultimate Tensile Strength | (ksi) | ≥ 100 |
| (N/mm²) = Mpa | ≥ 689 | |
| Yield Strength | (ksi) | ≥ 75 |
| (N/mm²) = Mpa | ≥ 517 | |
| Elongation | (%) | ≥ 2 |
| Modulus of Elasticity | (psi x 10^6) | 50 |
| (kN/mm²) | 345 | |
| Magnetic Properties | slight | |
| Magnetic Permeability | (µ) | > 1.05 |
| Thermal Expansion Coefficient | (x10^-6/K) (20ºC-500ºC) | 4.8 |
| Thermal Conductivity | (cgs) | 0.26 |
| Electrical Conductivity | (% IACS) | 16 |
| MIL-T-21014 | class | 4 |
| ASTM B777 | class | 4 |
| ASTM-T-21014 | class | 4 |
| AMS 7725 | Class 4 Type 2 | |
| Nominal Chemical Composiition | Ni content % Fe content % Cu content % Co content % W content % | 1.25 | 2.1 1.25 | 0.9 – | – – | – 97.5 | 97.0 |
| Other Material Names | HA185, HD 18.5, SD185, CMW 3970, K1850, MT-185, EA18.5 |
Other chemical compositions are available upon request. To view the full data table, click the link below.
Key ADVANTAGES to K1850 Tungsten Heavy Alloy
The unique combination of density, strength, and durability in our K1850 alloy makes it the ideal material for high-stakes applications.
- Superior Density: With a density comparable to pure tungsten, K1850 maximizes weight concentration in minimal space, outperforming traditional materials like lead or steel.
- Exceptional Mechanical Strength: K1850 combines high tensile strength and ductility, allowing it to withstand significant mechanical stress without losing performance.
- Extreme Durability: Built for longevity, K1850 offers exceptional resistance to corrosion, wear, and extreme temperatures, ensuring reliable performance in extreme conditions.
- Environmentally Compliant: As a lead-free material, K1850 promotes environmental sustainability while meeting rigorous legal and regulatory standards.

K1850 Quality and Manufacturing Excellence
At Elmet Technologies, quality is integral to every step of our manufacturing process. We are proud to produce our K1850 alloy under the rigorous standards of our AS9100 and ISO 9001 certified quality management systems. As a fully integrated, US-based manufacturer, we control the entire production cycle, from initial powder blending and pressing to final sintering and precision machining. This comprehensive oversight ensures unparalleled material purity, consistent density, and strict adherence to the most demanding tolerances.
Advanced Applications of K1850 in Key Industries
Our K1850 is a versatile material used in applications across various industries, including:
- Aerospace & Defense: Ideal for applications demanding high density and exceptional strength, such as balancing components and specialized defense applications.
- Medical Technology: A crucial material for radiation shielding applications, providing superior protection against harmful radiation in advanced medical imaging and therapeutic equipment.
- Energy & Industrial: This high-density material is engineered for precision tooling in high-temperature environments, offering enhanced performance and stability.



Partner with Elmet for K1850 Tungsten Solutions
Elmet Technologies is your trusted partner for K1850 Tungsten Heavy Alloy solutions, backed by 90 years of manufacturing excellence. We deliver superior quality and performance at every stage, from material specification to final component. Our team of experts is ready to work with you to create custom solutions for your most demanding applications. Contact our customer support team today to learn how our K1850 alloy can elevate your next project.










