ASTM B777 Class 2 Powder
Elmet Technologies manufactures high-quality ASTM B777 Class 2 Powder, one of the four WHA powder classifications defined under ASTM B777. This powder provides an optimal balance of density, strength, and machinability, making it an excellent choice for medical shielding and defense applications. It is composed of pure tungsten (W) combined with a nickel (Ni) and iron (Fe) binder. Elmet Technologies also offers Class 1, Class 3, and Class 4 powders and machined parts.
While ASTM B777 Class 2 Powder has a slightly lower density compared to pure tungsten or Classes 3 and 4, it still offers exceptional performance with a density that is twice that of steel and significantly higher than most nickel-based superalloys. This remarkable density ensures superior performance and reliability, even in the most demanding and challenging environments where durability and strength are critical.
Benefits of ASTM B777 CLASS 2 Powder
- Offering environmental and density benefits over lead for radiation shielding.
- Providing unique capabilities for vibration dampening and balance weight applications.
- Ideal for applications requiring very high density.
- Supporting defense applications due to its unique combination of yield strength, elongation, and density.
- Absorbing gamma rays and x-rays effectively.
- Exhibiting improved machinability compared to alternatives.
- Other applications that demand high-density and high-strength metal material.
Technical Data: Specifications
| Grade | Units | K1750 | ET92.5 | ET92.5NM |
| Tungsten content, Nominal | % | 92.5 | 92.5 |
| Density, Nominal | (g/cm3) | 17.5 | 17.5 |
| (lb/in3) | 0.63 | 0.63 | |
| Hardness | (Rc) | ≤ 33 | ≤ 33 |
| Ultimate Tensile Strength | (ksi) | ≥ 110 | ≥ 94 |
| (N/mm2) = Mpa | ≥ 758 | ≥ 648 | |
| Yield Strength | (ksi) | ≥ 75 | ≥ 75 |
| (N/mm2) = Mpa | ≥ 517 | ≥ 517 | |
| Elongation | (%) | ≥ 5 | ≥ 2 |
| Modulus of Elasticity | (psi x 106) | 46 | 47 |
| (kN/mm2) | 320 | 327 | |
| Magnetic Properties | slight | none | |
| Magnetic Permeability | (µ) | > 1.05 | ≤ 1.05 |
| Thermal Expansion Coefficient | (x10-6/K)(20°C-500°C) | 4.9 | 4.9 |
| Thermal Conductivity | (cgs) | 0.24 | 0.24 |
| Electrical Conductivity | (% IACS) | 12 | 12 |
| AMS-T-21014, MIL-T-210014 | Class 2 | Class 2 | |
| ASTM B777 | Class 2 | Class 2 | |
| AMS 7725 | Class 2 Type 2 | Class 2 Type 1 | |
| Nominal Chemical Composition | Ni content % Fe content % Cu content % Co content % W content % | 3.89 | 5.3 1.98 | 2.2 1.48 | – 0.1 | – 92.5 | 92.5 | 6.7 0.8 – – 92.5 |
Your Trusted Partner in Tungsten MEtal Manufacturing
At Elmet Technologies, we have decades of expertise in manufacturing high-quality tungsten-based materials. As an industry leader, we deliver innovative, in-house solutions tailored to our customers’ needs. From ASTM B777 Class 2 powder to precision-engineered products, we serve industries like medical, aerospace, defense, and energy with a focus on quality, consistency, and sustainability.